Ratchet wrench device for bidirectionally adjusting stroke of brake shoe stack adjuster

Abstract

The utility model relates to an overhaul auxiliary tool of a railway wagon foundation brake device, in particular to a ratchet wrench device for bidirectionally adjusting the stroke of a brake shoe stack adjuster, which comprises an inner hexagonal open ratchet, a reset spring, a pawl, a ratchet seat, a handle and an outer cover. The end of the handle is connected with an annular ratchet wheel seat, an opening is further formed in one side of the ratchet wheel seat, a ratchet wheel groove, a pawl groove and a reset spring groove are formed in the ratchet wheel seat, the pawl groove is located in the outer edge of the ratchet wheel groove, the reset spring groove is communicated with the pawl groove, a pawl is arranged in the pawl groove, and the top of the pawl is hinged in the pawl groove. A reset spring is arranged in the reset spring groove, the bottom of the reset spring abuts against a pawl, an inner hexagonal open ratchet wheel is arranged in the ratchet wheel groove, the bottom of the pawl is inserted into a tooth groove of the inner hexagonal open ratchet wheel, and one side of the annular outer cover is open and fixed to the ratchet wheel base. According to the ratchet wrench device for bidirectionally adjusting the stroke of the brake shoe stack adjuster, the stroke of the brake shoe stack adjuster is quickly adjusted through intermittent rotation of the ratchet.

Description

TECHNICAL FIELD

[0001] The utility model relates to the overhauling auxiliary tool of railway truck basic braking device, concretely is a kind of ratchet wrench device of two-way regulation brake adjuster stroke. BACKGROUND

[0002] Railway truck basic braking device is generally composed of brake cylinder piston push rod, brake cylinder lever, connecting lever, middle pull rod, upper pull rod, moving lever, fixed lever, fixed lever fulcrum, brake beam, brake shoe, brake shoe gap automatic adjuster and hand brake pull rod etc..In addition control lever, control rod, brake shoe to hang etc. Parts, also belong to basic braking device parts category.Basic braking device is the device of final realization braking function, it is connected with air brake and manpower brake and forms complete set of truck braking device, it is the force transmission device that the brake cylinder piston push rod to brake shoe gap contained by lever, pull rod, brake beam, brake shoe composition.It utilizes lever principle, and the pull of brake cylinder piston push force or manpower brake, which is generated by air brake, is expanded proper multiple after the action of each lever, pull rod and then is transmitted to brake shoe, so that brake shoe is pressed tightly wheel tread and generates braking function.Brake adjuster (brake shoe gap automatic adjuster) in basic braking device can adjust the gap between wheel and brake shoe, its structure is shown in Figure Figure 1 , including adjuster outer body 1, pull rod 2, protection tube 4 and screw rod 5, pull rod 2 is hollow structure, protection tube 4 is fixed at the front cover 3 of adjuster outer body 1, screw rod 5 is connected with the front cover 3 of adjuster outer body 1 after passing through protection tube 4, by rotating front cover 3, adjuster outer body 1 can be rotated and moves along the axial direction of screw rod 5, and screw rod 6 is sliding sleeve in hollow pull rod 2 in the inside of adjuster outer body 1, and screw rod 5, pull rod 2 on the left and right sides of brake adjuster are connected with upper pull rod through brake cylinder front lever, brake cylinder rear lever, and upper pull rod is connected with brake beam support through moving lever of bogie and drives moving lever side brake beam support to act, moving lever simultaneously drives the other side brake beam support of bogie to act through middle pull rod, and then drives both sides brake shoe to act (brake shoe is located at the left and right ends of brake beam), so adjusting the stroke of brake adjuster can realize that brake cylinder front lever, brake cylinder rear lever drive upper pull rod to make the displacement of moving lever of bogie, so that brake shoe on brake beam is adhered or separated.Railway truck needs to replace brake shoe when the gap between brake shoe and wheel is insufficient, generally uses open-end wrench to adjust the stroke of brake adjuster, places open-end wrench at the front cover of adjuster outer body 1, and rotates adjuster outer body 1 to adjust the stroke of brake adjuster, so that the gap between brake shoe and wheel is enlarged to complete replacing brake shoe, but this operation mode needs open-end wrench to repeatedly dismount and adjust position, which is time-consuming and laborious. SUMMARY

[0003] The utility model provides a ratchet wrench device of two-way regulation brake adjuster stroke to solve the problem of time-consuming and laborious in adjusting the stroke of brake adjuster by open-end wrench.

[0004] The utility model discloses a technical scheme as follows is adopted: a kind of ratchet wrench device of two-way adjustment gate adjuster stroke, including inner hexagonal opening ratchet wheel, reset spring, pawl, ratchet wheel seat, handle and outer cover;The end of handle is connected with circular ratchet wheel seat, the side of ratchet wheel seat is also provided with opening, ratchet wheel groove, pawl groove and reset spring groove are provided on ratchet wheel seat, pawl groove is located on the outer edge of ratchet wheel groove, reset spring groove is communicated with pawl groove, pawl is arranged in pawl groove, the top of pawl is hinged and arranged in pawl groove, reset spring is arranged in reset spring groove, the bottom of reset spring is on pawl, inner hexagonal opening ratchet wheel is arranged in ratchet wheel groove, the bottom of pawl is inserted into the tooth groove of inner hexagonal opening ratchet wheel, and the side opening of circular outer cover is fixed on ratchet wheel seat.

[0005] When using, the inner hexagonal slot of the device inner hexagonal opening ratchet wheel is placed on the outer hexagonal of the gate adjuster front cover, and the handle is moved to complete the rotation of the adjuster outer body by intermittent rotation of the inner hexagonal opening ratchet wheel, thereby adjusting the gate adjuster stroke, and repeatedly disassembling the device to adjust the position is not required.

[0006] The ratchet wrench device of two-way adjustment gate adjuster stroke described above, the number of pawl groove and reset spring groove is two, and the number of reset spring and pawl is two. Two pawls are arranged separately in the device, and in the use process, when one pawl is in the opening position of the inner hexagonal opening ratchet wheel, the bottom of the other pawl can be tightly pressed against the ratchet wheel.

[0007] The ratchet wrench device of two-way adjustment gate adjuster stroke of the utility model completes the rapid adjustment of gate adjuster stroke through intermittent rotation of ratchet wheel. BRIEF DESCRIPTION OF DRAWINGS

[0008] Figure 1 It is the structural schematic view of gate adjuster.

[0009] Figure 2 It is the explosion view of the device of the utility model.

[0010] Figure 3 It is the structural schematic view of the device of the utility model.

[0011] In the drawing: 1-adjuster outer body, 2-pull rod, 3-front cover, 4-protective tube, 5-screw rod, 6-inner hexagonal opening ratchet wheel, 7-reset spring, 8-pawl, 9-ratchet wheel seat, 10-handle, 11-outer cover. DETAILED DESCRIPTION

[0012] The utility model provides a kind of ratchet wrench device of two-way regulating gate travel, including inner hexagonal opening ratchet 6, reset spring 7, pawl 8, ratchet seat 9, handle 10 and outer cover 11;The end of handle 10 is connected with circular ratchet seat 9, and the one side of ratchet seat 9 is opened, and ratchet groove, pawl groove and reset spring groove are arranged on the annular surface of ratchet seat 9, the number of pawl groove and reset spring groove is two, and pawl groove is located on the outer edge of ratchet groove, and reset spring groove is communicated with pawl groove, pawl 8 is arranged in pawl groove, and the top of pawl 8 is hinged in pawl groove, and the bottom of pawl 8 is inserted into the tooth slot of inner hexagonal opening ratchet 6, reset spring 7 is arranged in reset spring groove, and the bottom of reset spring 7 is on pawl 8, and inner hexagonal opening ratchet 6 is arranged in ratchet groove, and circular outer cover 11 is opened on one side and is fixed on ratchet seat 9 by bolt.

[0013] When using, as shown (worker faces outer cover), anticlockwise rotate handle 10, and pawl 8 is tightly ratchet can transmit force to inner hexagonal opening ratchet 6, i.e. Figure 3 Tighten outer hexagonal nut, when clockwise rotate handle 10, the bottom of pawl 8 will slip along inner hexagonal opening ratchet 6, so that the position of handle 10 can be adjusted, to prepare for the next time tightening outer hexagonal nut;If need to loosen outer hexagonal nut, then the ratchet wrench of the utility model can be reversed (worker faces outer cover), clockwise rotate handle 10, and pawl 8 is tightly ratchet can transmit force to inner hexagonal opening ratchet 6, i.e. Loosen outer hexagonal nut, when anticlockwise rotate handle 10, the bottom of pawl 8 will slip along inner hexagonal opening ratchet 6, so that the position of handle 10 can be adjusted, to prepare for the next time loosening outer hexagonal nut. Thus, the utility model device is a ratchet wrench device with two-way adjusting function.

[0014] The process of adjusting the gate adjuster stroke using the device is as follows: the first scenario is the process of adjusting the gate adjuster stroke to be long, the inner hexagonal slot of the inner hexagonal opening ratchet wheel 6 in the device is placed on the outer hexagonal at the front cover 3 of the gate adjuster (the worker faces the outer cover), the handle 10 is counterclockwise, the pawl 8 is tightly clamped on the ratchet wheel to complete the rotation of the adjuster outer body 1, after rotating 120 degrees, the handle is clockwise rotated 120 degrees under the premise that the device does not leave the front cover 3 of the gate adjuster, at this time the pawl 8 slides along the root of the ratchet wheel, and the next rotation of the adjuster outer body 1 is performed, and the rapid adjustment of the gate adjuster stroke is completed through the above-mentioned cycle operation, when the opening of the ratchet wheel and the opening of the ratchet wheel seat 9 are in the same direction, the device is moved to the left and taken out; the second scenario is the process of adjusting the gate adjuster stroke to be short, the inner hexagonal slot of the inner hexagonal opening ratchet wheel 6 in the device is placed on the outer hexagonal at the front cover 3 of the gate adjuster (the worker faces the outer cover), the handle 10 is counterclockwise, the pawl 8 is tightly clamped on the ratchet wheel to complete the rotation of the adjuster outer body 1, after rotating 120 degrees, the handle is counterclockwise rotated 120 degrees under the premise that the device does not leave the front cover 3 of the gate adjuster, at this time the pawl 8 slides along the root of the ratchet wheel, and the next rotation of the adjuster outer body 1 is performed, and the rapid adjustment of the gate adjuster stroke is completed through the above-mentioned cycle operation, and the reset spring plays the role of pressing the pawl 8 in the whole process.

[0015] The utility model has the following advantages:

[0016] 1、The device adopts aluminum alloy material, which is light in quality and has good wear resistance.

[0017] 2、The device adopts ratchet wheel reciprocating motion, single action stroke range is large, the concentricity of the outer cover and the ratchet wheel seat is consistent with the concentricity of the inner hexagonal opening ratchet wheel, the force is more uniform, and the cooperation with the handle has higher working efficiency.

[0018] 3、The device solves the problem of time-consuming and laborious in the process of adjusting the gate adjuster stroke using the live mouth wrench.

Claims

1. A ratchet wrench device for bidirectional adjustment of the brake adjuster stroke, characterized in that: It includes a hexagonal open ratchet (6), a return spring (7), a pawl (8), a ratchet seat (9), a handle (10), and an outer cover (11); the end of the handle (10) is connected to the annular ratchet seat (9), and an opening is provided on one side of the ratchet seat (9). The ratchet seat (9) is provided with a ratchet groove, a pawl groove, and a return spring groove. The pawl groove is located on the outer edge of the ratchet groove. The return spring groove is connected to the pawl groove. A pawl (8) is provided in the pawl groove. The top of the pawl (8) is hinged in the pawl groove. The bottom of the pawl (8) is inserted into the tooth groove of the hexagonal open ratchet (6). A return spring (7) is provided in the return spring groove. The bottom of the return spring (7) rests on the pawl (8). The hexagonal open ratchet (6) is provided in the ratchet groove. An annular outer cover (11) is open on one side and fixed on the ratchet seat (9).

2. The ratchet wrench device for bidirectional adjustment of the brake adjuster stroke according to claim 1, characterized in that: There are two pawl slots and two return spring slots, and two return springs (7) and two pawls (8).

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