A multiple positioning shoe plate assembly mechanism

Abstract

The present application relates to the technical fields of train maintenance, in particular to a multiple positioning brake shoe carrier assembling mechanism, which comprises a hydraulic cylinder arranged on an assembling table and a fixing table for fixing the brake shoe carrier, an axle rod limiting piece is arranged between the fixing table and the hydraulic cylinder, the axle rod limiting piece supports the axle rod through an internal placing hole, the fixing table is slidingly arranged on the top of the assembling table and has a first position and a second position, in the first position, the fixing table is on one side of the axle rod limiting piece, so as to make the axle rod in the axle rod limiting piece enter the axle hole of the brake shoe carrier, the fixing table is slidingly arranged, a positioning mechanism is arranged on the sliding path of the fixing table, when the brake shoe carrier is extruded by the axle rod, the positioning mechanism is driven to move by driving the displacement of the brake shoe carrier, so that the positioning mechanism is simultaneously inserted into the axle hole and the placing hole of the brake shoe carrier, thereby making the brake shoe carrier and the axle rod coaxial quickly without manual adjustment by the operator.

Description

Technical Field

[0001] This invention relates to the field of high-speed train maintenance technology, and more specifically, to a multi-positioning brake shoe assembly mechanism. Background Technology

[0002] After a certain mileage or time of operation, high-speed trains must undergo professional maintenance at prescribed intervals to ensure the reliable function of all components and safe operation. This maintenance work is carried out by qualified high-speed train maintenance companies. The standard maintenance procedure includes: first, separating and disassembling the components to be inspected from the bottom of the train body and transporting them to a dedicated maintenance workshop; then, a series of processes are carried out sequentially, including disassembly, flaw detection, repair, component replacement, reassembly, and performance testing.

[0003] Take the brake shoe holder, a key component in the high-speed train braking system, as an example. During maintenance, the assembly of the brake shoe holder essentially involves pressing the axle into the shaft hole of the brake shoe holder to form a stable fit. This operation requires a high degree of coaxiality and must be completed using an assembly mechanism. The assembly mechanism generates significant axial pressure through hydraulic or mechanical means to smoothly and precisely press the axle into the shaft hole, thus completing the assembly.

[0004] However, current assembly mechanisms suffer from difficulty in accurately aligning the shaft and shaft hole when used with brake shoe supports of different specifications. Since different brake shoe supports cannot share the same dedicated clamping fixture, universal clamps are typically used on-site and fixed by compression. This fixing method easily leads to positional deviations of the brake shoe support before clamping, resulting in two main problems: First, if the shaft is slightly misaligned, causing its axis to not coincide with the axis of the brake shoe support shaft hole, the large pressure generated by the pressure head will not be accurately applied to the intended assembly part, but will be mistakenly applied to the non-stressed area of ​​the brake shoe support (such as the edge, flange face, or weak part of the casting), thereby causing damage to the brake shoe support.

[0005] Secondly, if the initial assembly fails due to a misalignment, the operator needs to readjust the position of the brake shoe holder. However, due to the lack of a positioning mechanism, the adjustment process is inefficient and time-consuming. Summary of the Invention

[0006] The purpose of this invention is to provide a multi-positioning brake shoe assembly mechanism, which solves the problem mentioned in the background art, namely, the difficulty in accurately aligning the shaft and the shaft hole, by setting the fixing platform of the fixed brake shoe to a sliding state and using the sliding to drive the positioning mechanism to adjust the position of the brake shoe.

[0007] To achieve the above objectives, a multi-positioning brake shoe assembly mechanism includes a hydraulic cylinder mounted on an assembly platform and a fixing platform for fixing the brake shoe. A shaft limiting member is provided between the fixing platform and the hydraulic cylinder. The shaft limiting member supports the shaft through an internal placement hole. The fixing platform is slidably mounted on the top of the assembly platform and has a first position and a second position. In the first position, the fixing platform is on one side of the shaft limiting member, allowing the shaft inside the shaft limiting member to enter the shaft hole of the brake shoe. In the second position, the fixing platform is away from the shaft limiting member. It also includes a drive mechanism. When the thrust applied by the shaft to the brake shoe holder is greater than a preset threshold, the drive mechanism drives the fixed platform to move from the first position to the second position and then back to the first position. A positioning mechanism is provided on the sliding path of the fixed platform. When the fixed platform is in the second position, the positioning mechanism enters the shaft hole of the brake shoe holder. When the fixed platform returns to the first position, it is simultaneously in the shaft hole and the placement hole of the brake shoe holder, so as to adjust the position of the brake shoe holder.

[0008] Based on this, the positioning mechanism includes a guide column and a support fixed to the top of the assembly table; The guide post slides through the support via the tail rod at its end, and a return spring is provided between the guide post and the support to elastically connect the two. The outer diameter of the guide post is consistent with the diameter of the shaft hole of the brake shoe holder, and the end of the guide post near the fixed platform is tapered. It also includes a locking element set on the outer ring of the guide post. When the fixed platform is in the second position, the locking element locks the guide post in the shaft hole of the brake shoe holder. When the fixed platform is in the first position, the locking element disengages from the shaft hole of the brake shoe holder through the shaft limiter.

[0009] Specifically, the locking member includes a locking block that slides radially into the interior of the guide post. The locking block is elastically set inside the guide post by a spring at its bottom end, and a first inclined surface is provided on the side of the top of the locking block near the hydraulic cylinder.

[0010] The guide pillar can be set in the following two ways: 1. The guide post is fixedly connected to the rear tail rod, and the guide post is coaxial with the placement hole. Because the guide post is coaxial with the placement hole, when the guide post is inserted into the shaft hole of the brake shoe holder, the shaft hole of the brake shoe holder will be coaxial with the placement hole.

[0011] Second, a sliding seat is provided at one end of the guide post, and a protrusion is provided at the end of the tail rod. The protrusion is movably disposed within the sliding seat, allowing the guide post to automatically adjust its position according to the placement hole. In this way, the guide post first enters the shaft hole of the brake shoe holder, and then enters the placement hole. By adjusting its own position and that of the brake shoe holder through the placement hole, the shaft hole of the brake shoe holder is made coaxial with the placement hole.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: In this multi-positioning brake shoe assembly mechanism, by changing the fixed platform to a sliding setting and setting a positioning mechanism on its sliding path, when the brake shoe is squeezed by the shaft, the positioning mechanism is moved by driving the brake shoe to move, so that the positioning mechanism simultaneously enters the shaft hole and the placement hole of the brake shoe, thereby making the brake shoe and the shaft quickly coaxial without the need for manual adjustment by the operator.

[0013] In addition, the movement of the fixed platform toward the positioning mechanism is not only to drive the positioning mechanism into the shaft hole and placement hole of the brake shoe holder, but also to avoid continuous compression of the shaft during the movement, reduce the pressure of the shaft on the brake shoe holder, and prevent the brake shoe holder from being damaged. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a cross-sectional structural diagram of the shaft limiting component of the present invention; Figure 3 This is a schematic diagram of the structure of the fixing platform of the present invention. Figure 1 ; Figure 4 This is a schematic diagram of the connection structure of the clamping plate of the present invention. Figure 1 ; Figure 5 This is a schematic diagram of the connection structure of the clamping plate of the present invention. Figure 2 ; Figure 6 This is a schematic diagram of the positioning mechanism of the present invention; Figure 7 This is a schematic cross-sectional view of the guide post of the present invention; Figure 8 This is a schematic diagram of the working state of the shaft of the present invention; Figure 9 This is a schematic diagram of the working state of the positioning mechanism of the present invention; Figure 10 For the present invention Figure 9 Enlarged schematic diagram of the structure at point A; Figure 11 This is a schematic diagram of the structure of the sliding seat of the present invention. Figure 1 ; Figure 12 This is a schematic diagram of the structure of the sliding seat of the present invention. Figure 2 ; Figure 13 This is a schematic diagram of the structure of the fixing platform of the present invention. Figure 2 .

[0015] The meanings of the labels in the diagram are as follows: 100. Assembly table; 101. Hydraulic cylinder; 102. Pressure head; 103. Base plate; 110. Fixing platform; 111. First support part; 112. Second support part; 113. Clamping plate; 114. Support spring; 115. Bracket; 116. Slide rod; 117. Cylinder; 120. Shaft limiter; 121. Placement hole; 122. Extension tube; 123. Top rod; 130. Drive mechanism; 140. Positioning mechanism; 141. Guide column; 142. Rear tail rod; 143. Support; 144. Return spring; 145. Locking block; 146. Spring piece; 147. First inclined surface; 148. Second inclined surface; 150. Protrusion; 151. Sliding seat; 200. Brake shoe support; 201. Shaft. Detailed Implementation

[0016] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0018] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0019] The function of the brake shoe support 200 is to provide reliable fixation and positioning of the brake shoes and to effectively transmit braking force to them. The brake shoe support 200 is connected to the brake beam via a shaft 201. The shaft 201 and the brake shoe support 200 are interference-fitted, and an assembly mechanism is used for assembly during the installation of the shaft 201. Figure 1As shown, the assembly mechanism includes a hydraulic cylinder 101 mounted on the assembly table 100 and a fixed table 110 for positioning the brake shoe support 200. The movable end of the hydraulic cylinder 101 is coaxial with the shaft hole of the brake shoe support 200. By placing the shaft 201 on the movement path of the movable end of the hydraulic cylinder 101, the movable end of the hydraulic cylinder 101 presses the shaft 201 into the shaft hole of the brake shoe support 200 through the pressure head 102.

[0020] The assembly platform 100 is horizontally positioned, and since the operator needs to press the start button with both hands simultaneously to control the hydraulic cylinder 101, a shaft limiting component 120 is also required between the fixed platform 110 and the hydraulic cylinder 101 to support the shaft 201, ensuring that the shaft 201 is coaxial with the brake shoe support 200. Figure 2 As shown, the shaft limiting member 120 is fixed to the base plate 103 on the top of the assembly platform 100, and a through placement hole 121 is provided on the side wall. The diameter of the placement hole 121 corresponds to the outer diameter of the shaft 201. By inserting the shaft 201 into the placement hole 121, the shaft 201 can be coaxial with the shaft hole of the brake shoe holder 200. At the same time, an extension tube 122 is also provided on one side of the placement hole 121. The extension tube 122 can prevent the shaft 201 from being pushed out by the positioning mechanism 140.

[0021] To accommodate brake shoe supports 200 of different sizes, the fixing platform 110 needs to work in conjunction with the clamping mechanism to secure the brake shoe support 200. The structure of the fixing platform 110 is as follows: Figure 3 As shown, except for the side near the hydraulic cylinder 101, the other three sides of the fixed platform 110 are bent upward to form the first support part 111. This structure makes the side of the fixed platform 110 near the fixed platform 110 an open structure. By setting the clamping mechanism on the open side of the fixed platform 110, the clamping mechanism pushes the brake shoe support 200 in the fixed platform 110 toward the first support part 111, thereby cooperating with the first support part 111 to clamp and fix the brake shoe support 200.

[0022] Since the shaft hole of the brake shoe support 200 is close to the top, a second support 112 is provided on top of the first support 111 to support the upper middle part of the brake shoe support 200 (the second support 112 is located at the first support 111 facing the hydraulic cylinder 101, see reference for details). Figure 3 This is to improve the stability of fixing the brake shoe 200.

[0023] Although the above structure enables the fixing of brake shoe supports 200 of various specifications, positional deviations can easily occur during the fixing process, causing the shaft hole of the brake shoe support 200 to be misaligned with the shaft 201 inside the shaft limiting member 120. Therefore, the present invention makes the following improvements: On one hand, the fixing platform 110 is slidably mounted on top of the assembly platform 100, giving it a first position and a second position. In the first position, the fixing platform 110 is positioned to one side of the shaft limiting member 120, allowing the shaft 201 within the shaft limiting member 120 to enter the shaft hole of the brake shoe support 200. In the second position, the fixing platform 110 is positioned away from the shaft limiting member 120. The switching between the first and second positions of the fixing platform 110 is controlled by a drive mechanism 130, which is located to one side of the brake shoe support 200. The drive mechanism 130 can be an electric push rod, a cylinder, or other similar mechanism. When the thrust applied by the shaft 201 to the brake shoe support 200 exceeds a preset threshold, it indicates that the brake shoe support 200 is misaligned with the shaft 201. At this time, the drive mechanism 130 drives the fixing platform 110 to move from the first position to the second position and then back to the first position.

[0024] On the other hand, a positioning mechanism 140 is provided on the sliding path of the fixed platform 110. When the fixed platform 110 is in the second position, the positioning mechanism 140 enters the shaft hole of the brake shoe support 200. When the fixed platform 110 returns to the first position, it is simultaneously in the shaft hole and the placement hole 121 of the brake shoe support 200, so as to adjust the position of the brake shoe support 200 by means of the positioning mechanism 140.

[0025] Specifically, the fixed platform 110 can slide via mechanisms such as slide rails and slide rods 116. As a concrete example, a slide rod 116 is provided at the bottom of the brake shoe support 200 and fixed to the base plate 103. The length direction of the slide rod 116 is consistent with the axial direction of the shaft 201, so the fixed platform 110 can slide via the slide rod 116.

[0026] like Figure 3 As shown, the clamping mechanism includes a clamping plate 113, which is located on the open side of the fixed platform 110. A driving member is connected to one side of the clamping plate 113. The driving member drives the clamping plate 113 to clamp the brake shoe support 200 at the first support part 111. The structure of the driving member is as follows: exist Figure 3 and Figure 4 In the illustrated embodiment, the driving component is a support spring 114. One end of the support spring 114 is fixedly connected to the clamping plate 113, and the other end is fixedly connected to the bracket 115 on the top of the assembly platform 100. When the driving mechanism 130 drives the fixed platform 110 to move towards the clamping plate 113, the distance between the clamping plate 113 and the fixed platform 110 becomes closer. At this time, the clamping plate 113 clamps the brake shoe support 200 at the first support part 111, and the support spring 114 can further support the movement of the fixed platform 110 by compression. In order to ensure the stability of the displacement of the clamping plate 113, this embodiment also provides a sliding through-hole round rod on one side of the clamping plate 113 to limit the position of the clamping plate 113.

[0027] exist Figure 5 In the embodiment shown, the driving component is a cylinder 117 fixedly installed on the opening side of the fixed platform 110. The movable end of the cylinder 117 is fixedly connected to the clamping plate 113. When it is necessary to clamp the brake shoe support 200, the movable end of the cylinder 117 extends and drives the clamping plate 113 to move, so that the clamping plate 113 clamps and fixes the brake shoe support 200.

[0028] The drive mechanism 130 is located on the side of the fixed platform 110 away from the hydraulic cylinder 101, and the movable end of the drive mechanism 130 is fixedly connected to the fixed platform 110 so that the fixed platform 110 can pull or push the fixed platform 110. In addition, a pressure sensor is installed inside the drive mechanism 130 or at its movable end to obtain the thrust borne by the fixed platform 110. When the shaft hole of the brake shoe support 200 is coaxial with the shaft 201, the shaft 201 can enter the shaft hole of the brake shoe support 200. At this time, the thrust exerted by the shaft 201 on the brake shoe support 200 is low. When the shaft hole of the brake shoe support 200 is misaligned with the shaft 201, the shaft 201 will abut against the side wall of the brake shoe support 200. At this time, the thrust exerted by the shaft 201 on the brake shoe support 200 is large. The drive mechanism 130 then drives the brake shoe support 200 to move through the fixed platform 110 to prevent the brake shoe support 200 from being crushed.

[0029] like Figure 6 As shown, the positioning mechanism 140 includes a guide post 141 and a support 143. The support 143 is vertically fixed to the top of the base plate 103, specifically located between the fixed platform 110 and the drive mechanism 130; Figures 1-10 In the illustrated embodiment, the guide post 141 is coaxial with the placement hole 121. The guide post 141 slides through the support 143 via the tail rod 142 at its end, and a return spring 144 elastically connects the guide post 141 and the support 143. Furthermore, the outer diameter of the guide post 141 matches the diameter of the shaft hole of the brake shoe holder 200, and the end of the guide post 141 near the fixed platform 110 has a tapered structure. Thus, when the guide post 141 is misaligned with the shaft hole of the brake shoe holder 200, the guide post 141 can enter the shaft hole of the brake shoe holder 200 through the tapered surface at its end. Next, a locking member is provided on the outer ring of the guide post 141. When the fixed platform 110 is in the second position, the locking member locks the guide post 141 in the shaft hole of the brake shoe holder 200. When the fixed platform 110 is in the first position, the locking member disengages from the shaft hole of the brake shoe holder 200 via the shaft limiting member 120.

[0030] The specific structure of the locking element is as follows: Figure 7As shown, the locking member includes a locking block 145 that slides radially into the interior of the guide post 141. The locking block 145 is elastically disposed in the guide post 141 by a spring piece 146 at its bottom end. A first inclined surface 147 is provided on the side of the top of the locking block 145 near the hydraulic cylinder 101. The bottom of the first inclined surface 147 is lower than the outer ring of the guide post 141.

[0031] The working principle of this invention will be described in detail below: like Figure 8 As shown, when the operator clamps the brake shoe support 200 on the fixed platform 110 for the first time, and the shaft hole of the brake shoe support 200 is coaxial with the shaft 201, the movable end of the hydraulic cylinder 101 pushes the shaft 201, and the shaft 201 moves and enters the shaft hole of the brake shoe support 200. At this time, the pressure data obtained by the pressure sensor is lower than the preset threshold. When the shaft hole of the brake shoe support 200 is misaligned with the shaft 201, the shaft 201 will directly press against the side wall of the brake shoe support 200. At this time, the pressure on the brake shoe support 200 is greater than the preset threshold. The movable end of the drive mechanism 130 retracts and drives the fixed platform 110 and the brake shoe support 200 to move to the second position. Figure 9 The upper part shows the state of the brake shoe support 200 moving to the second position. During this process, the brake shoe support 200 first disengages from the clamping plate 113 to be in an unclamped state. Then, the brake shoe support 200 contacts the guide post 141. First, the guide post 141 guides the brake shoe support 200 through the conical surface at its end until the shaft hole of the brake shoe support 200 fits into the outer ring of the guide post 141. Subsequently, the moving brake shoe support 200 presses the first inclined surface 147 at the top of the locking block 145. At this time, the locking block 145 is forced to move down so that the brake shoe support 200 passes over the locking block 145. After the brake shoe support 200 passes over the locking block 145, the locking block 145 is reset by the spring piece 146. Next, the fixed platform 110 is driven to reset via the drive mechanism 130 (i.e., return from the second position to the first position). Since the locking block 145 has already rebounded, the fixed platform 110 will also push the guide column 141 to move via the locking block 145 during the reset process of the brake shoe support 200. Figure 9 The middle part shows the state of the fixed platform 110 after it is reset. At this time, the brake shoe support 200 drives the guide column 141 to extend into the placement hole 121, which means that the shaft hole of the brake shoe support 200 and the placement hole 121 are coaxial. Then, the fixed platform 110 continues to move towards the shaft limiting member 120. The fixed platform 110 drives the brake shoe support 200 to contact the clamping plate 113. The clamping plate 113 clamps and fixes the brake shoe support 200, and the brake shoe support 200 also drives the guide column 141 to move through the locking block 145, combined with Figure 10When the locking block 145 moves to the top rod 123 on one side of the shaft limiter 120, the top rod 123 pushes the locking block 145 down by pressing the first inclined surface 147. When the locking block 145 is fully inserted into the guide post 141, the return spring 144 rebounds and drives the guide post 141 to reset, so that the guide post 141 is disengaged from the shaft hole of the brake shoe support 200. Finally, the hydraulic cylinder 101 is controlled to re-press the shaft 201, causing the shaft 201 to enter the shaft hole of the brake shoe holder 200.

[0032] In the above, to improve the efficiency of the locking block 145 disengaging from the brake shoe holder 200 shaft hole, such as... Figure 10 As shown, a second inclined surface 148 can be provided on the side of the locking block 145 opposite to the first inclined surface 147. In this way, when the push rod 123 presses the locking block 145 down by half through the first inclined surface 147, the inclined surface of the second inclined surface 148 contacts the end of the shaft hole of the brake shoe holder 200, thereby allowing the locking block 145 to quickly enter the guide post 141.

[0033] It should be noted that, in Figure 3 In the illustrated embodiment, after the fixed platform 110 moves the brake shoe support 200 to the second position, although the clamping plate 113 can no longer limit the brake shoe support 200, the brake shoe support 200 can overcome the thrust applied by the guide post 141 by its own weight, thereby preventing it from tipping over. For further improvement in stability, refer to... Figure 13 A first support part 111 can also be provided on the opening side of the fixed platform 110, so that the fixed platform 110 has a first support part 111 on all four sides, and the brake shoe support 200 is prevented from tipping over by the first support part 111.

[0034] Furthermore, the top rod 123 may not be provided on one side of the shaft limiting member 120. Instead, the fixing platform 110 and the shaft limiting member 120 may be positioned close to each other. In this way, after the guide post 141 passes through the shaft limiting member 120, the shaft limiting member 120 can press the first inclined surface 147 through the end of the placement hole 121.

[0035] In the above embodiments, by setting the guide post 141 to be coaxial with the placement hole 121, when the guide post 141 is located within the shaft hole of the brake shoe holder 200 and the placement hole 121, the placement hole 121 and the shaft hole of the brake shoe holder 200 will necessarily be coaxial. Next, the present invention provides another embodiment for adjusting the position of the brake shoe holder 200. Specifically, as follows... Figure 11 and Figure 12 As shown: The tail rod 142 is movably connected to the guide post 141. Specifically, a protrusion 150 is provided at the end of the tail rod 142, and a sliding seat 151 is provided at one end of the guide post 141. The sliding seat 151 has a circular structure, and its end is bent outward. Figure 12As shown, the inner diameter of the sliding seat 151 is larger than the outer diameter of the protrusion 150, while the inner diameter of the bent portion of the sliding seat 151 is smaller than the outer diameter of the protrusion 150. In this way, the protrusion 150 can be confined within the sliding seat 151, while the guide post 141 can move slightly.

[0036] In this embodiment, it is not necessary to make the guide post 141 coaxial with the placement hole 121. When the brake shoe support 200 moves toward the guide post 141, the shaft hole of the brake shoe support 200 guides the guide post 141 to make corresponding displacement through the conical surface of the guide post 141. At this time, the brake shoe support 200 and the guide post 141 are coaxial. When the brake shoe support 200 drives the guide post 141 into the placement hole 121 through the locking block 145, the placement hole 121 guides the guide post 141 and the brake shoe support 200 to move through the conical surface of the guide post 141, so that the brake shoe support 200 and the placement hole 121 are coaxial.

[0037] Therefore, it can be seen that the guide post 141 in this embodiment can automatically be coaxial with the placement hole 121 and can automatically adapt to the displacement changes of the placement hole 121 during long-term use.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-positioning brake shoe support assembly mechanism, comprising a hydraulic cylinder (101) mounted on an assembly platform (100) and a fixing platform (110) for fixing a brake shoe support (200), wherein a shaft limiting member (120) is provided between the fixing platform (110) and the hydraulic cylinder (101), and the shaft limiting member (120) supports the shaft (201) through an internal placement hole (121), characterized in that: The fixing platform (110) is slidably disposed on the top of the assembly platform (100) and has a first position and a second position. In the first position, the fixing platform (110) is located on one side of the shaft limiting member (120) to allow the shaft (201) inside the shaft limiting member (120) to enter the shaft hole of the brake shoe holder (200). In the second position, the fixing platform (110) is away from the shaft limiting member (120). It also includes a drive mechanism (130), which drives the fixed platform (110) to move from the first position to the second position and then back to the first position when the thrust applied by the shaft (201) to the brake shoe support (200) is greater than a preset threshold. A positioning mechanism (140) is provided on the sliding path of the fixed platform (110). When the fixed platform (110) is in the second position, the positioning mechanism (140) enters the shaft hole of the brake shoe support (200). When the fixed platform (110) returns to the first position, it is simultaneously in the shaft hole and the placement hole (121) of the brake shoe support (200) to adjust the position of the brake shoe support (200).

2. The multi-positioning brake shoe assembly mechanism according to claim 1, characterized in that: The top of the fixed platform (110) is used to place the brake shoe support (200), the side wall is bent upward to form a first support part (111), and a clamping mechanism for clamping and fixing the brake shoe support (200) is provided on the side of the fixed platform (110) near the shaft limiting member (120).

3. The multi-positioning brake shoe assembly mechanism according to claim 2, characterized in that: The clamping mechanism includes a clamping plate (113), and a driving member is connected to one side of the clamping plate (113). The driving member drives the clamping plate (113) to clamp the brake shoe holder (200) to the side wall of the first support part (111).

4. The multi-positioning brake shoe assembly mechanism according to claim 3, characterized in that: The driving component is a support spring (114). One end of the support spring (114) is fixedly connected to the clamping plate (113), and the other end is fixedly connected to the bracket (115) on the top of the assembly platform (100). The fixed platform (110) moves towards the clamping plate (113) so that the clamping plate (113) clamps the brake shoe support (200).

5. The multi-positioning brake shoe assembly mechanism according to claim 3, characterized in that: The driving component is a cylinder (117) fixedly installed on one side of the fixed platform (110). The cylinder (117) is used to drive the clamping plate (113) to move towards the brake shoe support (200) so that the clamping plate (113) clamps the brake shoe support (200).

6. The multi-positioning brake shoe assembly mechanism according to claim 1, characterized in that: The drive mechanism (130) includes at least a pressure sensor, which is used to obtain the thrust borne by the fixed platform (110) and to use the thrust data applied to the brake shoe (200) when the shaft (201) enters the shaft hole of the brake shoe (200) as a preset threshold.

7. The multi-positioning brake shoe assembly mechanism according to claim 1, characterized in that: The positioning mechanism (140) includes a guide post (141) and a support (143) fixed to the top of the assembly table (100). The guide post (141) slides through the support (143) via the tail rod (142) at the end, and a return spring (144) is provided between the guide post (141) and the support (143) to elastically connect the two. The outer diameter of the guide post (141) is consistent with the diameter of the shaft hole of the brake shoe holder (200), and the end of the guide post (141) near the fixed platform (110) is tapered. It also includes a locking member disposed on the outer ring of the guide post (141). When the fixed platform (110) is in the second position, the locking member locks the guide post (141) in the shaft hole of the brake shoe support (200). When the fixed platform (110) is in the first position, the locking member disengages from the shaft hole of the brake shoe support (200) through the shaft limit member (120).

8. The multi-positioning brake shoe assembly mechanism according to claim 7, characterized in that: The locking element includes a locking block (145) that slides radially into the interior of the guide post (141). The locking block (145) is elastically disposed in the guide post (141) by a spring piece (146) at its bottom end, and a first inclined surface (147) is provided on the side of the top of the locking block (145) near the hydraulic cylinder (101).

9. The multi-positioning brake shoe assembly mechanism according to claim 7, characterized in that: The guide post (141) is fixedly connected to the tail rod (142), and the guide post (141) is coaxial with the placement hole (121).

10. The multi-positioning brake shoe assembly mechanism according to claim 7, characterized in that: A sliding seat (151) is provided at one end of the guide post (141), and a protrusion (150) is provided at the end of the tail rod (142). The protrusion (150) is movably disposed in the sliding seat (151), so that the guide post (141) automatically adjusts its position according to the placement hole (121).

Images