US 11,939,727 B2
Rail tool-holder cart
Gualtiero Barezzani, Brescia (IT); and Gianluca Giacomazzi, Brescia (IT)
Assigned to Cembre S.p.A., Brescia (IT)
Appl. No. 16/636,980
Filed by Cembre S.p.A., Brescia (IT)
PCT Filed Jul. 18, 2018, PCT No. PCT/IB2018/055331
§ 371(c)(1), (2) Date Feb. 6, 2020,
PCT Pub. No. WO2019/030590, PCT Pub. Date Feb. 14, 2019.
Claims priority of application No. 102017000091285 (IT), filed on Aug. 7, 2017.
Prior Publication US 2020/0240088 A1, Jul. 30, 2020
Int. Cl. E01B 31/04 (2006.01); E01B 31/24 (2006.01); B61D 15/00 (2006.01); E01B 11/46 (2006.01); E01B 29/16 (2006.01); E01B 31/18 (2006.01)
CPC E01B 31/04 (2013.01) [E01B 31/24 (2013.01); B61D 15/00 (2013.01); E01B 11/46 (2013.01); E01B 29/16 (2013.01); E01B 31/18 (2013.01)] 26 Claims
OG exemplary drawing
 
1. A rail tool-holder cart, comprising:
A) a support frame having:
a longitudinal beam having two opposite end portions on each of which a roller is mounted for a rolling support of the support frame at two spaced apart points on a first rail,
a cross rod having a connection end rigidly connected to the longitudinal beam in a center region between the two end portions, and a support end opposite the connection end and on which at least one wheel is mounted, for a rolling support of the support frame at at least one point on a second rail transversely spaced apart from the first rail,
B) a tool-holder arm comprising:
a turret portion connected to the support frame adjacent to the connection end of the cross rod and rotatable with respect to the support frame about a substantially vertical rotation axis in an unlimited open angular range,
a coupling interface for a removable connection of a tool,
an arm extended transversely to the vertical rotation axis and which connects the coupling interface to the turret portion so that the coupling interface rotates together with the turret portion around the vertical rotation axis and is vertically movable with respect to the support frame between an upper limit position and a lower limit position,
C) a spring exerting on the coupling interface a permanent thrust towards the upper limit position so as to compensate for at least a part of the weight of the tool,
D) adjustment means for adjusting the spring thrust on the coupling interface.