An assembly gap positioning device and method

Abstract

This invention relates to an assembly gap positioning device and assembly method. The device includes a positioning part and multiple sets of gap control parts. The positioning part cooperates with the positioning structure of the base to achieve positioning. One end of each gap control part is connected to the positioning part, and the other end can extend and retract in the direction of the gap to be adjusted. A gap adjustment member is provided at the front end of the gap control part. By controlling the gap control part to extend forward, the gap adjustment member is inserted between the assembled parts, and the gap size between the assembled parts is adjusted using the gap adjustment member. This invention can precisely control the assembly gap, ensure assembly quality, improve assembly efficiency, and reduce costs.

Description

Technical Field

[0001] This invention belongs to the field of component assembly technology, and specifically relates to an assembly gap positioning device and assembly method. Background Technology

[0002] The noise reduction blocks for the bogie wheels of rail vehicles need to be assembled on the wheels. There are 8 blocks for each wheel. They need to be tightly attached to the inner side wall of the wheel. The spacing between the blocks should be uniform, and the assembly gap tolerance should be controlled within millimeters. After the gap is adjusted, they are fixed.

[0003] Currently, the following problems exist in the on-site installation of wheel noise reduction blocks:

[0004] 1. This assembly operation requires two people to work together and to continuously use measuring tools to measure and adjust the spacing evenly. This process is time-consuming and labor-intensive, and also results in excessive waste of manpower.

[0005] 2. There are no suitable tooling tools to assist in the assembly at this location, and it is entirely done by manpower. The first-time assembly pass rate is extremely low. It is necessary to repeatedly adjust the eight noise reduction blocks to ensure the assembly size. The labor intensity is high and the operation time is long, which increases the production cycle and affects production efficiency.

[0006] 3. Since the noise reduction block is made of metal and has sharp edges, it is relatively rough for wheels that require high surface processing precision. During repeated assembly and adjustment, it is very easy to bump into things, causing scratches on the wheel surface. As a result, the wheel needs to be reprocessed to ensure assembly precision. Some bumps and wears are deep, and some wheels may even be scrapped, affecting product quality and production cycle, while also increasing manufacturing costs.

[0007] In summary, the existing assembly method resulted in rework and time-consuming processes, increasing production costs and significantly impacting production efficiency. Summary of the Invention

[0008] The main technical problem solved by this invention is to provide an assembly gap positioning device that can accurately control the assembly gap, ensure assembly quality, improve assembly efficiency, and reduce costs, and to provide an assembly method using the assembly gap positioning device.

[0009] To solve the above-mentioned technical problems, the basic concept of the first technical solution adopted by the present invention is as follows:

[0010] An assembly gap positioning device includes a positioning part and multiple gap control parts. The positioning part cooperates with the positioning structure of the base to achieve positioning. One end of the gap control part is connected to the positioning part, and the other end can extend and retract in the direction of the gap to be adjusted. A gap adjustment member is provided at the front end of the gap control part. The gap control part is controlled to extend forward to drive the gap adjustment member to be inserted between the assembly parts, and the gap size between the assembly parts is adjusted by the gap adjustment member.

[0011] Furthermore, the positioning part includes a central spindle and a positioning end disposed at one end of the central spindle. The positioning end cooperates with the positioning structure on the base to achieve positioning. One end of the gap control part is connected to the central spindle.

[0012] Furthermore, the central main shaft is a cylindrical shaft, a semi-cylindrical shaft, or a square cylindrical shaft, and the gap control part is arranged radially or parallelly with equal or unequal intervals around the central main shaft.

[0013] Furthermore, the gap adjustment component is a triangular structure with its tip pointing towards the gap to be adjusted;

[0014] The gap adjustment component is disposed on the outer side of the end of the gap control part;

[0015] Alternatively, the gap adjustment member may be disposed above or below the end of the gap control part, and the end of the gap control part may be inserted into the gap between the assembly and the base for positioning during adjustment.

[0016] Furthermore, the gap control part includes a control rod, one end of which is rotatably connected to the positioning part, and the gap adjustment component is provided at the other end of the control rod. The control rod has a connecting fulcrum in the middle, and the connecting fulcrum is connected to the positioning part through a linkage mechanism. The extension and retraction of the control rod is controlled by controlling the linkage mechanism.

[0017] Alternatively, one end of the control rod is fixedly or rotatably connected to the positioning part, and the control rod adopts a telescopic rod structure to realize the telescopic movement of the control rod.

[0018] Furthermore, the linkage mechanism includes a first connecting seat and multiple connecting rods. One end of each connecting rod is rotatably connected to the connecting fulcrum of the corresponding control rod, and the other end of each connecting rod is rotatably connected to the first connecting seat. The first connecting seat is slidably mounted on the positioning part and is slidably mounted on the positioning part along the axial direction of the positioning part. Controlling the first connecting seat to slide along the positioning part drives the control rod to achieve telescopic movement through the connecting rod.

[0019] Furthermore, the first connecting seat has a central through hole, and the first connecting seat is fitted onto the outside of the positioning part and slides along the positioning part;

[0020] Alternatively, the first connecting seat and the positioning part are connected by a sliding joint;

[0021] Multiple sets of first connecting ears are provided on the outer periphery of the first connecting seat. The number of first connecting ears is the same as the number of connecting rods. The connecting rods are rotatably connected to the corresponding first connecting ears through a rotating shaft.

[0022] Furthermore, the control rod has a V-shaped structure, with the bending point of the V-shape serving as the connecting fulcrum. The bending angle of the control rod ensures that the lower half of the control rod is vertical when it is in the retracted state.

[0023] Furthermore, a second connecting seat is fixedly installed on the positioning part, and multiple sets of second connecting ears are arranged circumferentially on the second connecting seat. The control rod is fixedly connected to the corresponding second connecting ear or rotatably connected through a rotating shaft.

[0024] Another technical solution of the present invention is:

[0025] An assembly method employing the assembly gap positioning device as described above includes the following steps:

[0026] S1. Pre-assemble the parts to be assembled onto the base;

[0027] S2. Place the device on the base and make the positioning part cooperate with the positioning structure on the base;

[0028] S3. Control multiple sets of gap control parts to extend outward, insert multiple gap adjustment parts at the ends between the corresponding assembly parts, and control the gap size between the assembly parts;

[0029] S4. Secure the assembly components to the base;

[0030] S5. After use, restore the device to its initial state.

[0031] In summary, the assembly gap positioning device and assembly method provided by this invention have the following advantages compared with the prior art:

[0032] (1) The gap control part of the present invention adopts a telescopic and movable structure. By controlling multiple sets of gap control parts to extend in the gap direction, multiple assembly gaps can be automatically and accurately adjusted and controlled by the gap adjustment parts. It can also ensure that each assembly gap can meet the assembly requirements at one time. This not only greatly improves the assembly accuracy and assembly efficiency, but also greatly improves the first-time assembly qualification rate. It effectively avoids the assembly deviation problem caused by manual assembly in the early stage, thereby improving product quality and reducing manufacturing costs.

[0033] (2) The present invention has a simple overall structure and is quick and convenient to operate. It can be assembled by a single person, which saves a lot of personnel and time, reduces the labor intensity of operators, and maximizes the assembly efficiency.

[0034] (3) The present invention can completely avoid the damage to the substrate during assembly, avoid rework and repair, further improve assembly efficiency and reduce manufacturing costs.

[0035] (4) When not in use, the gap control part can be retracted to reduce the overall space occupied by the device and make it easier to store.

[0036] (5) The present invention also facilitates the control of the extension length of the gap control part to match the substrate of different sizes, which is beneficial to improving the versatility of the present invention.

[0037] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0038] The accompanying drawings, as part of this invention, are provided to further illustrate the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention, but do not constitute an undue limitation thereof. Clearly, the drawings described below are merely some embodiments, and those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0039] In the attached diagram:

[0040] Figure 1 This is a structural schematic diagram of the assembly gap positioning device of the present invention in use;

[0041] Figure 2 yes Figure 1 Top view;

[0042] Figure 3 This is a schematic diagram of the assembly gap positioning device of the present invention in its unused retracted state;

[0043] Figure 4 This is a schematic diagram of the gap control part of the present invention;

[0044] Figure 5 This is a schematic diagram of the wheel noise reduction block structure of the present invention;

[0045] Figure 6 This is a schematic diagram of the installation of the wheel noise reduction block of the present invention;

[0046] Figure 7 This is a schematic diagram of the engraving direction of the long bolt in this invention. Figure 1 ;

[0047] Figure 8 This is a schematic diagram of the marking direction of the short bolt in this invention. Figure 2 .

[0048] In the figure: noise reduction block 1, interlayer 11, mounting plate 12, first mounting hole 13, second mounting hole 14;

[0049] 2 long bolts, 3 short bolts, 4 gaps;

[0050] Positioning part 5, central spindle 51, positioning end 52;

[0051] Clearance control unit 6, control rod 61, linkage mechanism 62, first connecting seat 621, connecting rod 622, first connecting lug 623, connecting fulcrum 63;

[0052] 7. Gap adjustment component; 8. End cap retaining ring; 9. Pull ring;

[0053] Second connector 10, mounting plate 101, second connector ear 102.

[0054] It should be noted that the accompanying drawings and text description are not intended to limit the scope of the invention in any way, but rather to illustrate the concept of the invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0055] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0056] In the description of this invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", 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 limiting this invention.

[0057] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0058] Example 1:

[0059] like Figures 1 to 3As shown, this embodiment provides an assembly gap positioning device, which is described in detail with the example of installing multiple noise reduction blocks on a single wheel of a rail vehicle. Of course, this gap positioning device can also be used in other operations that require precise determination of assembly gaps.

[0060] When installing noise reduction block 1 on the wheel of a rail vehicle, the noise reduction block 1 is installed and fixed tightly against the inner side wall of the wheel. For example... Figure 5 As shown, the noise reduction block 1 consists of a sandwich layer 11 and a mounting plate 12. The mounting plate 12 is installed on one side of the sandwich layer 11, and both ends of the mounting plate 12 extend out of the sandwich layer 11. A first mounting hole 13 is provided in the middle of the sandwich layer 11. A second mounting hole 14 is provided at each end of the mounting plate 12. The second mounting hole 14 is a half hole. The second mounting holes 14 of two adjacent noise reduction blocks 1 are joined together to form a complete mounting hole 14.

[0061] For example, 6. Figure 7 and Figure 8 As shown, a total of 8 noise reduction blocks 1 are installed on each wheel. Each noise reduction block 1 has a long bolt 2 installed at the first mounting hole 13 in the middle. The long bolt 2 passes through the interlayer 11 and mounting plate 12 of the noise reduction block 1 and is fixedly connected to the noise reduction block mounting groove on the wheel. Short bolts 3 are installed at the second mounting holes 14 at both ends. The short bolts 3 pass through the mounting plate 12 of the noise reduction block 1 and are fixedly connected to the noise reduction block mounting groove on the wheel. The mounting plates 12 of two adjacent noise reduction blocks 1 share a short bolt 3 and a washer to fix them to the wheel.

[0062] During assembly, eight gaps 4 are formed between the eight noise reduction blocks 1. The gaps 4 between two adjacent noise reduction blocks 1 (i.e., the gaps used to install the short bolts 3) should be uniform, and the dimensions of the eight gaps 4 should be completely consistent. The tolerance of the assembly gaps 4 should be controlled at the millimeter level. After the gaps are adjusted and positioned, they are fixed by the short bolts 3 at the ends. The assembly gap positioning device provided in this embodiment is used to accurately position the eight gaps 4 between the eight noise reduction blocks 1.

[0063] like Figures 1 to 3 As shown, the assembly gap positioning device provided in this embodiment includes a positioning part 5 and multiple sets of gap control parts 6. The positioning part 5 cooperates with the positioning structure on the base (i.e., the wheel) to realize the positioning of the device. One end of the gap control part 6 is connected to the positioning part 5, and the other end can extend and retract in the direction of the gap to be adjusted (i.e., in the direction of the noise reduction block 1 to be assembled). A gap adjustment member 7 is provided at the front end of each gap control part 6. By controlling the gap control part 6 to extend forward, the gap adjustment member 7 is inserted between the assembly parts (i.e., the noise reduction block 1), and the gap size between the assembly parts (i.e., the noise reduction block 1) is adjusted by using the gap adjustment member 7.

[0064] In this embodiment, the gap control unit 6 adopts a telescopic and movable structure. During assembly, multiple gap control units 6 are extended outward, and multiple gap adjustment pieces 7 at the ends are inserted into the gap 4 between two adjacent noise reduction blocks 1. The gap adjustment pieces 7 can then be used to adjust and control the size of the gap 4 between two adjacent noise reduction blocks 1. Moreover, when not in use, the gap control unit 6 can be retracted to reduce the overall space occupied by the device and facilitate storage. At the same time, the gap control unit 6 can be extended to different lengths to match wheels of different diameters, improving the versatility of the device.

[0065] In this embodiment, the base is a circular wheel, and the center of the base is selected from the axle hole on the side of the wheel. The radial distance from the axle hole to each noise reduction block 1 is the same. Understandably, when the base is a component of other shapes, the position of its positioning structure can be determined according to the actual shape and size of the base.

[0066] In this embodiment, preferably, the positioning part 5 includes a central spindle 51 and a positioning end 52 disposed at one end of the central spindle 51, and one end of the gap control part 6 is connected to the central spindle 51. The shape of the positioning end 52 is determined according to the shape of the determined base positioning structure, and the positioning end 52 cooperates with the positioning structure on the base to achieve positioning.

[0067] In this embodiment, the wheel's axle hole is used as the positioning structure. The positioning end 52 adopts a positioning cone structure and is installed at the bottom of the central spindle 51. When the device is lowered vertically, the positioning end 52 can be inserted downward into the wheel's axle hole to achieve center positioning of the device with the side of the wheel. The positioning cone structure not only facilitates insertion into the axle hole but also provides adaptive hole diameter positioning, ensuring that the axis of the axle hole coincides with the central axis of the central spindle 51. Furthermore, the positioning end 52 is suitable for positioning axle holes of different diameters.

[0068] Optionally, for a hole-shaped positioning structure, a tapered positioning end 52 can be selected. For a protruding structure protruding from the surface of the substrate, the positioning end 52 can also adopt a cylindrical structure and be fitted on the outside of the protruding structure to achieve center positioning.

[0069] In this embodiment, the shape of the central spindle 51 can be selected as a cylindrical shaft, a semi-cylindrical shaft, or a square cylindrical shaft, depending on the distribution of the gaps to be adjusted. Multiple sets of gap control units 6 extend radially or parallelly with equal or unequal spacing, centered on the central spindle 51, again depending on the distribution of the gaps to be adjusted. The extension length of each set of gap control units 6 can be the same or different, determined by the distance between the gap 4 and the central spindle 51.

[0070] In this embodiment, since the base is a wheel, the noise reduction blocks 1 to be assembled are evenly arranged along the circumference of the wheel. Therefore, the central spindle 51 is preferably a cylindrical shaft, and multiple sets of gap control parts 6 extend outward in a radial pattern with equal spacing around the central spindle 51.

[0071] Since eight noise reduction blocks 1 need to be installed on the wheel, eight gaps 4 need to be positioned. The device requires a total of eight gap control parts 6. One end of the gap control part 6 is connected to the central spindle 51. The eight gap control parts 6 extend outward in a radial pattern with equal spacing from the central spindle 51. At the same time, the length of the gap control part 6 matches the distance between the gap 4 and the central spindle 51, so that when the eight gap control parts 6 extend outward, their ends are exactly located at the gaps that need to be positioned.

[0072] In this embodiment, preferably, the gap control unit 6 employs control rods 61 of a certain length. Specifically, eight outwardly extending control rods 61 are equally spaced along the circumference of the central spindle 51. One end of each control rod 61 is rotatably connected to the central spindle 51, and a gap adjustment component 7 is provided at the other end. Each control rod 61 has a connecting fulcrum 63 in the middle, and each connecting fulcrum 63 is connected to the central spindle 51 via a linkage mechanism 62. The extension and retraction of the control rods 61 are controlled by the linkage mechanism 62. The linkage mechanism 62 allows simultaneous control of the eight control rods 61, ensuring that the extension distance and extension angle are identical, thereby guaranteeing uniformity and consistency in the eight gaps 4.

[0073] Preferably, in this embodiment, the linkage mechanism 62 includes a first connecting seat 621 and multiple connecting rods 622. The number of connecting rods 622 is the same as the number of control rods 61. One end of the connecting rod 622 is rotatably connected to the connecting fulcrum 63 of the corresponding control rod 61, and the other end of the connecting rod 622 is rotatably connected to the first connecting seat 621. The first connecting seat 621 is slidably mounted on the central spindle 51. The first connecting seat 621 can slide along the axial direction of the central spindle 51. Controlling the sliding of the first connecting seat 621 along the axial direction of the central spindle 51 drives the control rods 61 to achieve telescopic movement through the connecting rods 622.

[0074] In this embodiment, the first connecting seat 621 has a central through hole. The first connecting seat 621 is fitted onto the outside of the central spindle 51 and slides along the axial direction of the central spindle 51. Optionally, the first connecting seat 621 and the central spindle 51 can also be connected by a sliding pair. For example, axially extending grooves and sliders are correspondingly provided on the first connecting seat 621 and the central spindle 51, and the sliding between the first connecting seat 621 and the central spindle 51 is achieved through the cooperation of the grooves and sliders. Regardless of the sliding connection method used, the first connecting seat 621 can be manually pushed to slide along the axial direction of the central spindle 51, which is simple and convenient to operate.

[0075] In this embodiment, it is further preferred that multiple sets of first connecting ears 623 are provided on the outer periphery of the first connecting seat 621. The number of first connecting ears 623 is the same as the number of connecting rods 622. The connecting rods 622 are rotatably connected to the corresponding first connecting ears 62 through a rotating shaft (not shown in the figure). The connecting rods 622 rotate up and down around the rotating shaft.

[0076] In a further preferred embodiment, a second connecting seat 10 is fixedly installed on the lower half of the central spindle 51. The end of the control rod 61 is rotatably connected to the second connecting seat 10 via a rotating shaft. The second connecting seat 10 has an annular mounting plate 101, which is fitted onto the central spindle 51 and fixedly connected to it. This fixing can be achieved by welding or by fasteners such as bolts. Multiple sets of second connecting ears 102 are circumferentially arranged on the lower surface of the mounting plate 101. The number of second connecting ears 102 is the same as the number of control rods 61. The end of the control rod 61 is connected to the second connecting ears 102 via a rotating shaft, and the control rod 61 rotates up and down around the rotating shaft.

[0077] Preferably, in this embodiment, an end cap retaining ring 8 is installed on the top of the central spindle 51. The end cap retaining ring 8 is disc-shaped and installed perpendicular to the axial direction of the central spindle 51. The end cap retaining ring 8 can be used to limit the maximum stroke of the first connecting seat 621 on the central spindle 51, so as to prevent the first connecting seat 621 from falling off the top of the central spindle 51.

[0078] In this embodiment, preferably, a pull ring 9 is also fixedly installed on the end cap retaining ring 8. The pull ring 9 makes it convenient to hang the device when it is not in use, making it easy to store. It also makes it convenient for the operator to carry the device when needed.

[0079] In this embodiment, the control rod 61 preferably adopts a V-shaped structure. The control rod 61 bends away from the linkage mechanism 62, that is, it bends away from the first connecting seat 621. The bending point of the V-shape is the connecting fulcrum 63. The bending angle of the control rod 61 makes the lower half of the control rod 61 vertical when it is in the retracted state. This makes it convenient for the control rod 61 to extend outward and also convenient to converge towards the center. In the retracted state, the width in the horizontal direction can be minimized, thus reducing the space occupied.

[0080] like Figure 4 As shown, in this embodiment, the lower surface of the main body of the control lever 61 is a curved surface, and the lower and upper surfaces of the front end are both flat surfaces. This facilitates the sliding of the front end with the wheel side surface during movement, ensuring that the wheel surface is not damaged during sliding, and also provides an installation plane for the clearance adjustment component 7.

[0081] like Figure 1As shown, when using this device, the first connecting seat 621 is manually pushed to move towards the top end along the central main shaft 51. Since the second connecting seat 10 is fixedly connected to the central main shaft 51, the axial position of the end of the control rod 61 connected to the second connecting seat 10 relative to the central main shaft 51 is fixed. When the first connecting seat 621 moves towards the top end, the eight connecting rods 622 move upward synchronously, driving the connecting fulcrum 63 of the eight control rods 61 to move upward, that is, driving the control rods 61 to move upward and unfold, and further causing the front end of the control rods 61 to move along the wheel side surface to complete the adjustment of the gap 4.

[0082] like Figure 3 As shown, when the device is finished in use, the central spindle 51 is manually pulled upwards. Under the action of gravity, the first connecting seat 621 will automatically slide towards the bottom end of the central spindle 51, thereby causing the eight connecting rods 622 to move downwards synchronously. The eight control rods 61 rotate downwards under their own weight and the drive of the connecting rods 622, and are in a vertical suspension state.

[0083] like Figure 4 As shown, in this embodiment, preferably, the gap adjusting member 7 is a block with a certain thickness. The shape of the gap adjusting member 7 is determined by the gap shape that needs to be positioned. The size of the gap adjusting member 7 is determined by the size of the gap 4. The gap adjusting member 7 and the control rod 61 can be integrally formed structural components.

[0084] In this embodiment, it is further preferred that the gap adjustment component 7 adopts a triangular structure, the length of the longest side of the triangular body is the maximum adjustable gap size, the tip of the gap adjustment component 7 has an end face, the width of the end face is the minimum adjustable gap size. According to the gap 4 standard of the noise reduction block 1, the length of the longest side of the triangular body is 5mm, the width of the end face is 1mm, and the adjustment range of the gap 4 is 1mm-5mm.

[0085] Understandably, the size of the gap adjustment component 7 can be determined according to the standard of the actual gap 4. The size of all gap adjustment components 7 can be the same to control the size of all gaps 4 to be uniform, or they can be different to control each gap 4 to meet its own size requirements.

[0086] The gap adjustment component 7 adopts a triangular structure with its tip pointing towards the gap 4. This not only facilitates insertion between two adjacent noise reduction blocks 1, but also, as the control rod 61 extends forward, the two sides of the triangular body push the noise reduction blocks 1 on both sides, causing the gap 4 between the two noise reduction blocks 1 to gradually increase from small to large. Once the gap 4 size requirement is met, the gap adjustment component 7 can be stopped from being pushed further. At this point, the size of all gaps 4 is uniform and consistent, and all meet the assembly requirements.

[0087] Optionally, the gap adjustment component 7 can be located on the outer side of the end of the control rod 61, or the gap adjustment component 7 can be located above or below the end of the control rod 61, depending on the fit between the assembly and the base.

[0088] In this embodiment, during the assembly of the noise reduction block 1, there is a gap of approximately 10mm between the noise reduction block 1 and the wheel side surface. Figure 4 As shown, the gap adjustment component 7 is located above the end of the control rod 61. When adjusting, the front end of the control rod 61 is inserted into the gap (not shown in the figure) between the noise reduction block 1 and the wheel side surface, which plays a role in positioning the noise reduction block 1 and the wheel side surface in the axial direction, and also plays a supporting role, ensuring that the device can be stably fixed to the wheel surface.

[0089] like Figure 1 and Figure 3 As shown, this embodiment also provides an assembly method using the assembly gap positioning device described above, which specifically includes the following steps:

[0090] S1. Pre-assemble the parts to be assembled onto the base;

[0091] S2. Place the device on the base and make the positioning part 5 cooperate with the positioning structure on the base;

[0092] S3. Control the multiple sets of gap control parts 6 to extend outward, insert the multiple gap adjustment parts 7 at the ends into the gaps 4 between the corresponding assemblies, and control the size of the gaps 4 between the assemblies.

[0093] S4. Secure the assembly components to the base;

[0094] S5. After use, restore the device to its initial state, i.e., the retracted and suspended state.

[0095] The following example demonstrates the assembly method of the noise reduction blocks by assembling eight noise reduction blocks 1 on a single wheel:

[0096] Step S0, Preparation before assembly:

[0097] Before assembly, the mounting slots and mounting surfaces of the noise reduction blocks should be coated with zinc powder paint and dried.

[0098] Inspect the surface of noise reduction block 1; it must not have any bumps or scratches, and it must not be coated with protective paint.

[0099] Check the noise reduction block mounting slots; there should be no foreign objects inside.

[0100] Step S1: Pre-assemble the noise reduction block 1 to be assembled onto the wheel.

[0101] Specifically, use a marker to mark the starting position of the milling opening of the noise reduction block mounting slot on the inner end face of the wheel rim. Insert the long bolt 2 and short bolt 3 into the milling opening of the noise reduction block mounting slot at intervals. The direction of the concave groove at the end of the fixing bolt of the noise reduction block 1 must be consistent with the axial direction of the axle. Gently tighten the lock nut of the long bolt 2, pre-assemble the lock nut and washer of the short bolt 3, and place the noise reduction plate on the wheel.

[0102] Step S2: Place the device on the wheel and align the positioning part 5 with the axle hole on the side of the wheel.

[0103] Specifically, the handle 9 at the top of the carrying device places the tapered positioning end 52 at the bottom of the central spindle 51 above the wheel axle hole, lifts the first connecting seat 621, and moves the first connecting seat 621 away from the second connecting seat 10 below. Driven by the connecting rod 622, the eight control rods 61 move upward synchronously and eventually all unfold.

[0104] The device is lowered vertically so that the positioning end 52 at the bottom of the central spindle 51 is placed in the axle hole of the wheel. The tapered positioning end 52 is adaptively adjusted relative to the axle hole so that the axis of the central spindle 51 coincides with the axis of the axle hole, ensuring that the device is fixed and does not move.

[0105] Step S3: Extend the multiple sets of gap control parts 6 outward, insert the multiple gap adjustment parts 7 at the ends into the gaps 4 between the corresponding noise reduction blocks 1, and adjust and control the size of the gaps 4 between the noise reduction blocks 1.

[0106] Specifically, as multiple clearance control parts 6 extend outward, the front end of the control rod 61 moves forward along the wheel hub surface in the radial direction of the wheel. The front end of the control rod 61 extends forward and its front end penetrates into the gap between the lower part of the wheel noise reduction block 1 and the wheel surface, playing a positioning and support role.

[0107] During the forward extension process, the control lever 61 gradually engages the gap adjustment piece 7 between two adjacent noise reduction blocks 1. By controlling the advance distance, the size of the eight gaps 4 between the eight noise reduction blocks 1 is automatically adjusted, while ensuring that all gaps 4 are uniform and consistent, so no further adjustment is required.

[0108] Step S4: Securely assemble the noise reduction block 1 onto the wheel.

[0109] Then, gently tighten the locking nut of the long bolt 2 and the locking nut and washer of the short bolt 3 to fix the long bolt 2 and the short bolt 3 respectively, thus completing the fastening assembly of the noise reduction block 1 onto the wheel.

[0110] like Figure 7 and Figure 8As shown, to ensure assembly stability, uniform and stable stress distribution, reduce workload, and avoid omissions, a "symmetrical triangle fastening method" is adopted. First, long bolts 2 are tightened sequentially, with the tightening of long bolts 2 proceeding in the following order: Figure 7 As shown, the sequence is 1-7-11-3-9-15-5-13, and then the short bolts 3 are tightened sequentially, with the tightening of the short bolts 3 proceeding in the following order. Figure 8 As shown, the sequence is 2-8-12-4-10-16-6-14. After all 16 bolts are tightened, each bolt is checked individually.

[0111] Step S5: After use, restore the device to its initial state.

[0112] After adjustment, simply hold handle 9 and lift the device upwards. The first connecting seat 621 will slide downwards along the central main axis 51 under its own weight, thus restoring it to its original suspended state for storage.

[0113] Step S6, Completion Inspection

[0114] After installation, the assembly quality is checked using a camber gauge. The gap between the noise reduction block 1 and the mating surface of the wheel rim must not exceed 1mm, and the camber gauge must not penetrate the entire mating surface. Furthermore, after installation, the noise reduction block 1 must not extend axially beyond the wheel rim or touch the wheel hub.

[0115] The present invention employs a retractable and movable structure for the multiple gap control units 6. By controlling the multiple gap control units 6 to extend in the direction of the gap 4, the gap adjustment component 7 can automatically and accurately adjust and control multiple assembly gaps 4, ensuring that each assembly gap 4 can meet the assembly requirements at one time. This changes the original assembly method and solves the problems of wheel collision, low assembly efficiency, uneven assembly gaps, and high labor intensity that exist in the original noise reduction block assembly process. It not only greatly improves the assembly accuracy and efficiency, but also significantly increases the first-pass yield, effectively avoiding the assembly deviation problems caused by manual assembly in the early stage, thereby improving product quality and reducing manufacturing costs.

[0116] The invention has a simple overall structure and is quick and easy to operate. Assembly can be completed by a single person, which saves a lot of manpower and time, reduces the labor intensity of operators, and maximizes assembly efficiency.

[0117] This invention can completely avoid damage to the substrate during assembly, avoid rework and repair, further improve assembly efficiency, and reduce manufacturing costs.

[0118] When not in use, the gap control section 6 can be retracted to reduce the overall space occupied by the device and facilitate storage.

[0119] The present invention also facilitates the control of the extension length of the gap control part 6 to match the substrate of different sizes, which helps to improve the versatility of the present invention.

[0120] Example 2:

[0121] The difference from Embodiment 1 is that in this embodiment, one end of the control rod 61 is fixedly connected to the central main shaft 51, and the control rod 61 adopts a telescopic rod structure, such as a telescopic sleeve structure. The control rod 61 can extend and retract along the side surface of the wheel, omitting the linkage mechanism 62 in Embodiment 1.

[0122] During assembly, all control levers 61 are extended outward to complete the step of adjusting the gap 4. This step is the same as that described in Embodiment 1. After use, the control levers 61 are retracted to reduce their length, which also facilitates storage.

[0123] When this structure is used, the length of each control lever 61 can be adjusted manually. The control lever 61 can be marked with a scale to precisely control its extension length according to the gap position.

[0124] In this structure, the control lever 61 and the central spindle 51 can also be rotatably connected via a pivot, preferably a damped pivot. In use, the control lever 61 is rotated upwards and then extended further outwards. After use, the control lever 61 is rotated downwards to a vertical position for easy hanging and storage.

[0125] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present invention. The implementation schemes in the above embodiments can be further combined or replaced. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A wheel noise reduction block assembly gap positioning device, wherein the noise reduction blocks are installed and fixed tightly against the inner sidewall of the wheel, and a gap is left between adjacent noise reduction blocks, characterized in that: The assembly gap positioning device includes a positioning part and multiple gap control parts. The positioning part cooperates with the wheel's positioning structure to achieve positioning. One end of the gap control part is connected to the positioning part, and the other end can extend and retract in the direction of the gap to be adjusted. The lower surface of the main body of the gap control part is all arc-shaped, while the lower and upper surfaces of the front end are all flat. A gap adjusting component is provided on the outer side, above, or below the front end of the gap control part. The gap adjusting component adopts a triangular structure, with the tip pointing towards the gap direction, and the width of the tip end face is the minimum adjustable gap size. The gap between adjacent noise reduction blocks is adjusted. When the gap is reached, the gap control part extends forward and is positioned within the gap between the noise reduction block and the wheel side surface. This position drives the gap adjustment part to be inserted into the gap between adjacent noise reduction blocks. The gap adjustment part is used to adjust the gap size between the noise reduction blocks. After the tip of the gap adjustment part is inserted into the gap, during the forward extension of the gap control part, the two sides of the triangular body push the noise reduction blocks on both sides, gradually increasing the gap between adjacent noise reduction blocks from small to large. Once the gap size requirement is met, the advancement of the gap adjustment part is stopped. At this point, the size of all gaps is uniform.

2. The assembled gap positioning device of claim 1, wherein: The positioning part includes a central spindle and a positioning end disposed at one end of the central spindle. The positioning end cooperates with the positioning structure on the wheel to achieve positioning. One end of the clearance control part is connected to the central spindle.

3. The assembled gap positioning device of claim 2, wherein: The central spindle is a cylindrical shaft, a semi-cylindrical shaft, or a square cylindrical shaft, and the gap control part is arranged radially or parallelly with equal or unequal intervals around the central spindle.

4. The assembly gap positioning device according to any one of claims 1-3, wherein the gap control part includes a control rod, one end of the control rod is rotatably connected to the positioning part, the gap adjustment member is provided at the other end of the control rod, the control rod has a connecting fulcrum in the middle, the connecting fulcrum is connected to the positioning part through a linkage mechanism, and the extension and retraction movement of the control rod is controlled by controlling the linkage mechanism; Alternatively, one end of the control rod is fixedly or rotatably connected to the positioning part, and the control rod adopts a telescopic rod structure to realize the telescopic movement of the control rod.

5. The assembled gap positioning device of claim 4, wherein: The linkage mechanism includes a first connecting seat and multiple connecting rods. One end of each connecting rod is rotatably connected to the connecting fulcrum of the corresponding control rod, and the other end of each connecting rod is rotatably connected to the first connecting seat. The first connecting seat is slidably mounted on the positioning part and is slidably mounted on the positioning part along the axial direction of the positioning part. Controlling the first connecting seat to slide along the positioning part drives the control rod to achieve telescopic movement through the connecting rod.

6. The assembled gap positioning device of claim 5, wherein: The first connecting seat has a central through hole, and the first connecting seat is fitted onto the outside of the positioning part and slides along the positioning part; Alternatively, the first connecting seat and the positioning part are connected by a sliding joint; Multiple sets of first connecting ears are provided on the outer periphery of the first connecting seat. The number of first connecting ears is the same as the number of connecting rods. The connecting rods are rotatably connected to the corresponding first connecting ears through a rotating shaft.

7. The assembled gap positioning device of claim 4, wherein: The control rod has a V-shaped structure, and the bending point of the V-shape is the connecting fulcrum. The bending angle of the control rod makes the lower half of the control rod vertical when it is in the retracted state.

8. The assembled gap positioning device of claim 4, wherein: A second connecting seat is fixedly installed on the positioning part, and multiple sets of second connecting ears are arranged circumferentially on the second connecting seat. The control rod is fixedly connected to the corresponding second connecting ear or rotatably connected through a rotating shaft.

9. An assembly method employing the assembly gap positioning device according to any one of claims 1 to 8, characterized in that Includes the following steps: S1. Pre-assemble the parts to be assembled onto the base; S2. Place the device on the base and make the positioning part cooperate with the positioning structure on the base; S3. Control multiple sets of gap control parts to extend outward, insert multiple gap adjustment parts at the ends between the corresponding assembly parts, and control the gap size between the assembly parts; S4. Secure the assembly components to the base; S5. After use, restore the device to its initial state.

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