Parking brake support positioning device

Abstract

The utility model discloses a parking brake support positioning device which comprises a base, a clamping structure, a pressing structure and a centering structure. The key points of the utility model are as follows: a clamping jaw of the clamping structure is provided with a first end far away from the clamping space and two opposite first outer side walls connected with the end face of the first end; the centering structure comprises a mounting seat, an inclined block and two tensioning blocks, and the top surface of the mounting seat protrudes upwards to form a core shaft; the inclined block is sleeved on the core shaft in an up-down sliding manner and is provided with two opposite inclined parts which are far away from the core shaft and are inclined relative to the core shaft; the two tensioning blocks are connected to the mounting base in a relatively sliding mode, one tensioning block corresponds to one first outer side wall and is in sliding fit with one inclined part, when the parking brake support is clamped, the inclined block slides downwards to drive the two tensioning blocks to slide towards the lug part of the parking brake support and abut against the lug part, and therefore radial limiting of the parking brake support is achieved. The parking brake support can be prevented from rotating, and the positioning precision is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of positioning devices, in particular to a parking brake bracket positioning device. Background Art

[0002] The parking brake bracket requires a positioning device to clamp and position it during milling and drilling. Existing positioning devices include a base, a clamping structure, and a pressing structure mounted on the base. The clamping structure includes multiple clamping seats fixed to the top surface of the base, each of which is fixed with a claw. The multiple claws form a clamping space for clamping the parking brake bracket. The pressing structure includes a pressing seat fixed to the top surface of the base. The pressing seat is located on one side of the clamping seat and is equipped with a pressure plate for pressing the parking brake bracket downward. However, the positioning device mentioned above is inaccurate, affecting the machining accuracy of the parking brake bracket. Utility Model Content

[0003] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a parking brake bracket positioning device that can improve positioning accuracy.

[0004] To achieve the above objectives, the present invention adopts the following technical solutions:

[0005] A parking brake bracket positioning device, comprising a base and a clamping structure, a pressing structure and a centering structure installed on the base;

[0006] The clamping structure includes a plurality of claws located above the base and slidably connected to the base, the plurality of claws enclosing a clamping space for clamping the parking brake bracket, the claws having a first end away from the clamping space and two opposite first outer side walls connected to an end surface of the first end;

[0007] The pressing structure includes a pressing seat located on one side of the clamping claw and fixed on the base, and the pressing seat is connected to a pressing plate located above the base;

[0008] The centering structure includes a mounting seat, an inclined block and two tensioning blocks. The mounting seat is located outside the first end and is fixed to the top surface of the base. A core shaft protrudes upward from the top surface of the mounting seat. The inclined block can be slidably mounted on the core shaft up and down, and has two relatively inclined parts away from the core shaft and inclined relative to the core shaft. The two tensioning blocks are connected to the mounting seat in a relatively sliding manner. One of the tensioning blocks corresponds to one of the first outer side walls and slidably cooperates with one of the inclined parts, and a spring is connected between each of the tensioning blocks and the inclined block.

[0009] Furthermore, each of the tensioning blocks is concavely provided on an outer side wall close to the core shaft to form an inclined groove, and the inclined groove is in sliding engagement with the inclined portion.

[0010] Furthermore, an upper groove is formed upward on the outer wall of the inclined portion away from the core shaft, a supporting block is fixed on the outer wall of each tensioning block away from the core shaft, and a lower groove is formed downward on the inner wall of each inclined groove away from the core shaft corresponding to the upper groove, and the two ends of the spring are respectively arranged in the upper groove and the lower groove.

[0011] Furthermore, a support is fixed to the top surface of the mounting seat, and the support has two opposite second outer side walls, one second outer side wall corresponding to one first outer side wall, and the top surface of the support is downward and has a sliding groove penetrating the two second outer side walls along the radial direction of the core shaft, and the bottom surface of the sliding groove has the core shaft protruding upward, and the inclined block, the spring and the two tensioning blocks are located in the sliding groove.

[0012] Furthermore, a fixing hole is downwardly opened on the bottom surface of the slide groove and passes through the bottom surface of the support, the core shaft is fixed in the fixing hole, the upper end of the core shaft protrudes upward relative to the bottom surface of the slide groove and extends upward to the outside of the top surface of the support, and the inclined block is sleeved on the upper end of the core shaft.

[0013] Furthermore, two equal-height columns are fixed to the top surface of the mounting seat, and the two equal-height columns are respectively located on opposite sides of the support, and one of the equal-height columns corresponds to a side of the tensioning block away from the core shaft.

[0014] Furthermore, the inclined block is provided with a connecting hole running through it from top to bottom, the connecting hole is slidably engaged with the core shaft, the core shaft is connected to an operating nut located above the inclined block, the operating nut is abutted against the top surface of the inclined block to drive the inclined block to slide up and down, so that the inclined block drives the two tensioning blocks to slide radially along the parking brake bracket.

[0015] Furthermore, a chuck is provided on the top surface of the base, the clamping structure and the pressing structure are provided on the top surface of the chuck, the multiple claws are slidably connected to the top surface of the chuck and are distributed in a circular array around the center of the chuck, the pressing seat is fixed to the top surface of the chuck, and the mounting seat is located on the outside of the chuck.

[0016] The centering structure of the parking brake bracket positioning device of the present invention is provided with a mounting seat, an inclined block, and two tensioning blocks. A core shaft protrudes upward from the top surface of the mounting seat. The inclined block can be slidably mounted on the core shaft and has two relatively inclined portions that are away from the core shaft and inclined relative to the core shaft. The two tensioning blocks are relatively slidably connected to the mounting seat. One tensioning block corresponds to a first outer side wall and slides with one inclined portion. When clamping the parking brake bracket, the inclined block slides downward, driving the two tensioning blocks to slide toward the ears of the parking brake bracket and abut against the ears, thereby achieving radial limitation of the parking brake bracket, preventing the parking brake bracket from rotating, and improving positioning accuracy. The parking brake bracket positioning device of the present invention has the characteristics of high positioning accuracy, convenient clamping, and strong interchangeability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a three-dimensional schematic diagram of a parking brake bracket positioning device according to an embodiment of the present utility model;

[0018] Figure 2 for Figure 1 Usage status diagram;

[0019] Figure 3 for Figure 1 Schematic diagram of the three-dimensional decomposition of the sub-structure;

[0020] Figure 4 for Figure 3 Cross-sectional view of the assembled state. DETAILED DESCRIPTION

[0021] Below, in conjunction with the accompanying drawings and specific embodiments, the utility model is further described:

[0022] like Figures 1 to 4 As shown, an embodiment of the present invention provides a parking brake bracket positioning device for clamping the parking brake bracket 100 of a heavy vehicle during milling and drilling. The parking brake bracket 100 has an arcuate portion 101 and two opposing ears 102 located on one side of the arcuate portion 101. The parking brake bracket positioning device includes a base 1, and a clamping structure 2, a pressing structure 3, and a centering structure 4 mounted on the base 1.

[0023] like Figure 1 、 Figure 2As shown, the clamping structure 2 includes a plurality of claws 21 located above the base 1 and slidably connected to the base 1. In this embodiment, a chuck 11 is provided on the top surface of the base 1, and a plurality of tracks are fixed to the top surface of the chuck 11 by screws. The clamping structure 2 and the clamping structure 3 are provided on the top surface of the chuck 11. The plurality of claws 21 are slidably connected to the top surface of the chuck 11 and are distributed in a circular array around the center of the chuck 11. The plurality of claws 21 form a clamping space 211 for clamping the parking brake bracket 100. When the parking brake bracket 100 is clamped, each claw 21 abuts against the outer peripheral wall of the arc-shaped portion 101 to center the parking brake bracket 100. Specifically, there are three claws 21, one claw 21 slidably cooperates with a track, and the claw 21 has a first end 212 away from the clamping space 211 and two opposite first outer side walls 213 connected to the end surface of the first end 212.

[0024] like Figure 1 、 Figure 2 As shown, the clamping structure 3 includes a clamping seat 31 located on one side of the jaws 21 and fixed to the base 1. There are three clamping seats 31, with one clamping seat 31 positioned between two adjacent jaws 21. Specifically, the clamping seat 31 is bolted to the top surface of the chuck 11 and connected to a screw. The clamping seat 31 is connected to a pressure plate 32 located above the base 1. The pressure plate 32 is used to press the parking brake bracket 100 downward. Specifically, the pressure plate 32 is connected to the screw, which is also connected to a locking nut (unnumbered) that abuts against the top surface of the pressure plate 32.

[0025] like Figures 2 to 4 As shown, the centering structure 4 includes a mounting seat 41, an inclined block 42, a spring and two tensioning blocks 43. The mounting seat 41 is located outside the first end 212 and is fixed to the top surface of the base 1. Specifically, the mounting seat 41 is located outside the chuck 11 (as shown in FIG. Figure 1 As shown, a core shaft 44 protrudes upward from the top surface of the mounting seat 41. A bevel block 42 is slidably mounted on the core shaft 44. Specifically, the bevel block 42 defines a connecting hole 420 extending vertically therethrough, which slidably engages with the core shaft 44. The bevel block 42 has two opposing inclined portions 421 that are spaced apart from the core shaft 44 and inclined relative to the core shaft 44. Two tensioning blocks 43 are slidably connected to the mounting seat 41. One tensioning block 43 corresponds to a first outer wall 213 and slidably engages with one inclined portion 421. A spring (not shown) is connected between each tensioning block 43 and the bevel block 42 for reset. When the parking brake bracket 100 is clamped, the bevel block 42 slides downward, driving the two tensioning blocks 43 to slide toward the ear portion 102 of the parking brake bracket 100 and abut against the ear portion 102, thereby radially limiting the parking brake bracket 100 and preventing rotation, thereby improving positioning accuracy.

[0026] like Figures 2 to 4As shown, in this embodiment, a support 40 is fixed to the top surface of the mounting seat 41 by screws, and the support 40 has two opposite second outer side walls 401, one second outer side wall 401 corresponding to the first outer side wall 213, and the top surface of the support 40 is downwardly provided with a sliding groove 402 penetrating the two second outer side walls 401 along the radial direction of the core shaft 44, and the bottom surface of the sliding groove 402 protrudes upward with the core shaft 44. Specifically, the bottom surface of the sliding groove 402 is downwardly provided with a fixing hole 403 penetrating the bottom surface of the support 40, and the core shaft 44 is fixed in the fixing hole 403, and the upper end of the core shaft 44 protrudes upward relative to the bottom surface of the sliding groove 402 and extends upward to the outside of the top surface of the support 40. Viewed in the direction perpendicular to the end face of the first end 212, the axis of the core shaft 44 coincides with the symmetric center line of the claw 21, the inclined block 42, the spring and the two tensioning blocks 43 are located in the sliding groove 402, and the inclined block 42 is sleeved on the upper end of the core shaft 44.

[0027] like Figure 3 、 Figure 4 As shown, to improve positioning accuracy, an inclined groove 431 is formed inwardly on the outer wall of each tensioning block 43 near the core shaft 44. The inclined groove 431 slidably engages with the inclined portion 421 and extends through the top and bottom surfaces of the tensioning block 43. More specifically, an upper groove 4211 is formed upwardly on the outer wall of the inclined portion 421, away from the core shaft 44. A lower groove 432 is formed downwardly on the inner wall of each inclined groove 431, away from the core shaft 44, corresponding to the upper groove 4211. The two ends of the spring are respectively disposed in the upper groove 4211 and the lower groove 432, and respectively abut against the inclined block 42 and the tensioning block 43. To facilitate replacement, a retaining block 433 is fixed to the outer wall of each tensioning block 43, away from the core shaft 44, by screws. The retaining block 433 is used to abut the ear portion 102.

[0028] like Figure 1 、 Figure 3 As shown, in order to further improve the positioning accuracy and facilitate processing and replacement, two equal-height columns 411 are fixed to the top surface of the mounting seat 41 by screws. The two equal-height columns 411 are used to support the two ears 102 and are respectively located on opposite sides of the support 40, and one equal-height column 411 corresponds to the side of a tensioning block 43 away from the core shaft 44.

[0029] like Figure 3 、 Figure 4As shown, the core shaft 44 is connected to an operating nut 45 located above the inclined block 42. The operating nut 45 abuts against the top surface of the inclined block 42 to drive the inclined block 42 to slide up and down, so that the inclined block 42 drives the two tensioning blocks 43 to slide along the radial direction of the parking brake bracket 100. When clamping the parking brake bracket 100, the operating nut 45 moves downward to drive the inclined block 42 to move downward. The downward moving inclined block 42 drives the two tensioning blocks 43 to slide along the slide groove 402 and toward the ear 102, so that the two tensioning blocks 43 drive the two abutting blocks 433 to slide toward the ear 102. The two abutting blocks 433 stop when they abut against the two ears 102 respectively. At this time, the center hole and countersunk hole of the arc portion 101 can be milled, and holes can be drilled in the arc portion 101 and the ear 102. When the parking brake bracket 100 is released, the operating nut 45 moves upward, and the inclined block 42 and the two tensioning blocks 43 are reset under the elastic force of the spring. At this time, the tensioning block 43 is separated from the ear 102, thereby achieving convenient clamping.

[0030] The centering structure of the parking brake bracket positioning device of the present invention is provided with a mounting seat, an inclined block, and two tensioning blocks. A core shaft protrudes upward from the top surface of the mounting seat. The inclined block can be slidably mounted on the core shaft and has two relatively inclined portions that are away from the core shaft and inclined relative to the core shaft. The two tensioning blocks are relatively slidably connected to the mounting seat. One tensioning block corresponds to a first outer side wall and slides with one inclined portion. When clamping the parking brake bracket, the inclined block slides downward, driving the two tensioning blocks to slide toward the ears of the parking brake bracket and abut against the ears, thereby achieving radial limitation of the parking brake bracket, preventing the parking brake bracket from rotating, and improving positioning accuracy. The parking brake bracket positioning device of the present invention has the characteristics of high positioning accuracy, convenient clamping, and strong interchangeability.

[0031] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein, and these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. The parking brake bracket positioning device is characterized in that: It includes a base and a clamping structure, a pressing structure and a centering structure installed on the base; The clamping structure includes a plurality of claws located above the base and slidably connected to the base, the plurality of claws enclosing a clamping space for clamping the parking brake bracket, the claws having a first end away from the clamping space and two opposite first outer side walls connected to an end surface of the first end; The pressing structure includes a pressing seat located on one side of the clamping claw and fixed on the base, and the pressing seat is connected to a pressing plate located above the base; The centering structure includes a mounting seat, an inclined block and two tensioning blocks. The mounting seat is located outside the first end and is fixed to the top surface of the base. A core shaft protrudes upward from the top surface of the mounting seat. The inclined block can be slidably mounted on the core shaft up and down, and has two relatively inclined parts away from the core shaft and inclined relative to the core shaft. The two tensioning blocks are connected to the mounting seat in a relatively sliding manner. One of the tensioning blocks corresponds to one of the first outer side walls and slidably cooperates with one of the inclined parts, and a spring is connected between each of the tensioning blocks and the inclined block.

2. The parking brake bracket positioning device according to claim 1, characterized in that: The outer side wall of each tensioning block close to the core shaft is inwardly recessed to form an inclined groove, and the inclined groove is slidably matched with the inclined portion.

3. The parking brake bracket positioning device according to claim 2, characterized in that: The inclined portion is provided with an upper groove upwardly on the outer side wall away from the core shaft, each of the tensioning blocks is fixed with a supporting block away from the outer side wall of the core shaft, and each of the inclined grooves is provided with a lower groove downwardly corresponding to the upper groove on the inner side wall away from the core shaft, and the two ends of the spring are respectively arranged in the upper groove and the lower groove.

4. The parking brake bracket positioning device according to claim 1, characterized in that: A support is fixed to the top surface of the mounting seat, and the support has two opposite second outer side walls, one second outer side wall corresponding to one first outer side wall, and the top surface of the support is downward and has a sliding groove penetrating the two second outer side walls along the radial direction of the core shaft, and the core shaft protrudes upward from the bottom surface of the sliding groove, and the inclined block, the spring and the two tensioning blocks are located in the sliding groove.

5. The parking brake bracket positioning device according to claim 4, characterized in that: The bottom surface of the slide groove is downwardly opened with a fixing hole that passes through the bottom surface of the support. The core shaft is fixed in the fixing hole. The upper end of the core shaft protrudes upward relative to the bottom surface of the slide groove and extends upward to the outside of the top surface of the support. The inclined block is sleeved on the upper end of the core shaft.

6. The parking brake bracket positioning device according to claim 4, characterized in that: Two equal-height columns are fixed on the top surface of the mounting seat. The two equal-height columns are respectively located on opposite sides of the support, and one of the equal-height columns corresponds to a side of the tensioning block away from the core shaft.

7. The parking brake bracket positioning device according to claim 1, characterized in that: The inclined block is provided with a connecting hole running through it from top to bottom, the connecting hole is slidably engaged with the core shaft, the core shaft is connected to an operating nut located above the inclined block, the operating nut is abutted against the top surface of the inclined block to drive the inclined block to slide up and down, so that the inclined block drives the two tensioning blocks to slide radially along the parking brake bracket.

8. The parking brake bracket positioning device according to claim 1, characterized in that: A chuck is provided on the top surface of the base, the clamping structure and the pressing structure are provided on the top surface of the chuck, the multiple claws are slidably connected to the top surface of the chuck and are distributed in a circular array around the center of the chuck, the pressing seat is fixed to the top surface of the chuck, and the mounting seat is located on the outside of the chuck.

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