Symmetrical detection device for automobile rear plate spring support

Abstract

The utility model provides an automobile rear plate spring support symmetry detection device, which relates to the technical field of automobile part detection, and comprises a detection table, a movable groove is arranged at the center of the top of the detection table, and two sliding grooves are arranged at the back side of the movable groove and located at the top of the detection table. Limiting assemblies are installed at the positions, located on the front face and the back side, of the top of the detection table, two sliding blocks are arranged at the bottom of the limiting assembly located on the back side, and an air rod is further arranged on the back side of the limiting assembly located on the back side. Meanwhile, due to the design of the limiting assembly in the front-back direction, partial deviation of the plate spring support in the front-back direction is effectively avoided, the stability of the plate spring support in the detection process is guaranteed, the accuracy of the detection result is improved, and it is guaranteed that the quality and performance of the automobile rear plate spring support meet the standard.

Description

TECHNICAL FIELD

[0001] The utility model relates to automobile parts detection technical field especially, relate to a kind of automobile rear leaf spring support symmetry detection device. BACKGROUND

[0002] Leaf spring is the most traditional elastic element in automobile suspension system, with good reliability, simple structure, short manufacturing process, low cost and greatly simplified structure, etc., widely used in modern society automobile production process, and automobile leaf spring needs to use leaf spring support to be fixed to automobile for use, so the quality and precision of leaf spring support are very important for the service life and safety of automobile.

[0003] According to the automobile rear leaf spring support symmetry detection device disclosed in Chinese patent document (authorized announcement number: CN217303903U), a bidirectional motor is fixedly installed inside the box body, a limit plate is installed on the top of the lead screw and penetrates the box body, adjusting rods are installed on the two sides of the box body through adjusting pieces, a sleeve is installed on the periphery of the adjusting rod, a guide rail is fixedly installed on the top of the sleeve, a distance measuring sensor is fixedly installed on the surface of the guide rail, a sliding block is installed on the periphery of the guide rail on the two sides of the distance measuring sensor, a fixing ring is installed on the periphery of the sliding block through a bearing, and detection rods are installed on the top and bottom of the fixing ring. The utility model combines various structures to easily and quickly perform symmetry detection work between leaf springs during work, increases practicality, and reduces the occupied area of the device when not in use, facilitating storage, placement, carrying and moving work of workers.

[0004] However, the above scheme still has the following shortcomings when implemented:

[0005] Since the leaf spring support is directly placed between the two limit plates, when the two limit plates move to limit the leaf spring support, there is no limiting component in the front-back direction, so to some extent, partial deviation in the front-back direction may occur, which may cause the leaf spring support to be in a certain inclined state after limiting is completed, and thus the detection result may be inaccurate.

[0006] Therefore, we propose a kind of automobile rear leaf spring support symmetry detection device. UTILITY MODEL CONTENTS

[0007] The utility model aims at solving the shortcomings in the prior art. Since the leaf spring support is directly placed between the two limit plates, when the two limit plates move to limit the leaf spring support, there is no limiting component in the front-back direction, so to some extent, partial deviation in the front-back direction may occur, which may cause the leaf spring support to be in a certain inclined state after limiting is completed, and thus the detection result may be inaccurate.

[0008] In order to achieve the above object, the utility model adopts the following technical scheme:

[0009] A kind of automobile rear plate spring support symmetry detection device, including detection table, range sensor and support seat, the center of the top of the detection table is equipped with movable slot, two sliding grooves are equipped at the back of movable slot and the top of detection table, the top of detection table and at the front and back are equipped with limiting assembly, the bottom of limiting assembly at back is equipped with two sliding blocks, the back of limiting assembly at back is also equipped with gas rod;

[0010] The limiting assembly includes a limiting seat, a plurality of mounting slots are formed in the interior of the limiting seat, a plurality of rolling wheels are provided in the interior of the mounting slots, an expansion slot is formed in the right side wall of the limiting seat, an expansion block is provided on the left side wall of the limiting seat, and a plurality of locking slots are formed in the expansion block and the expansion slot.

[0011] As a preferred scheme of the utility model, the limiting assembly at back is slidably connected between the two sliding blocks at the bottom and the two sliding grooves, and the gas rod can drive the limiting assembly at back to slide and adjust.

[0012] As a preferred scheme of the utility model, the rolling wheels are connected between the top and bottom of the mounting slots through bearings, thereby realizing sliding rotation.

[0013] As a preferred scheme of the utility model, the detection table is provided with an inner cavity in the interior, the inner cavity is provided with a mounting plate, the back of the mounting plate is provided with a worm, the front of the mounting plate is provided with a servo motor, and the back of the worm is provided with a first bearing seat.

[0014] As a preferred scheme of the utility model, the worm is provided with a worm gear at the connection, the worm gear is provided with a bidirectional screw rod, the two side walls of the bidirectional screw rod are provided with a second bearing seat, the bidirectional screw rod is provided with two nut blocks, the front and back of the two nut blocks are provided with auxiliary sliding blocks, and the front and back of the movable slot are provided with auxiliary stable sliding grooves.

[0015] As a preferred scheme of the utility model, the servo motor can drive the worm to rotate, thereby driving the worm gear to rotate, the worm gear is fixedly connected with the bidirectional screw rod, thereby driving the bidirectional screw rod to rotate on the two second bearing seats.

[0016] As the preferred scheme of the utility model, two nut blocks are threadedly connected with the bidirectional screw rod, the top of each of the two nut blocks is provided with a clamping block, the two distance measuring sensors are used in cooperation with the two clamping blocks, the distance measuring sensor is installed at the center of the detection table, and the two support seats are symmetrically installed, and the two distance measuring sensors are used for detecting the distance between the two clamping blocks.

[0017] As the preferred scheme of the utility model, the limiting seat can be expanded, the expansion block can be inserted into the expansion slot to form expansion, the locking slot is used for installing a screw rod for fixation, the front surface of the limiting assembly is further provided with a support seat, and the distance measuring sensor is installed in the two side walls of the support seat.

[0018] Compared with the prior art, the utility model has the beneficial effects that:

[0019] In the utility model, the rolling wheel is arranged in the limiting seat, so that the leaf spring support can move more smoothly during the limiting process, the position deviation caused by friction is reduced, meanwhile, the limiting assembly in the front-rear direction is designed, the partial deviation of the leaf spring support in the front-rear direction is effectively avoided, the stability of the leaf spring support in the detection process is ensured, the accuracy of the detection result is improved, and the quality and performance of the automobile rear leaf spring support meet the standards.

[0020] The limiting assembly at the back side is slidably connected with the sliding groove through the sliding block at the bottom and is driven to slide by the air rod, can flexibly adjust the position according to the leaf spring supports of different models or sizes, enhances the universality and adaptability of the detection device, and improves the detection efficiency.

[0021] The expansion block and the expansion slot of the limiting seat are designed, the limiting seat can be expanded according to the actual detection requirement, the screw rod is fixed in the locking slot, the limiting requirement of the leaf spring supports of different sizes is met, the flexibility and practicality of the detection device are further improved, the equipment cost is reduced, and the economic benefit of the enterprise is improved. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 A main body structure schematic view of the symmetrical detection device for the automobile rear leaf spring support is provided in the utility model.

[0023] Figure 2 A detection table internal structure schematic view of the symmetrical detection device for the automobile rear leaf spring support is provided in the utility model.

[0024] Figure 3 An expansion slot and an expansion block schematic view of the symmetrical detection device for the automobile rear leaf spring support are provided in the utility model.

[0025] Figure 4The utility model provides a kind of automobile rear plate spring support symmetry detection device Figure 1 The structure of the middle A is enlarged and shown in the schematic diagram.

[0026] Legend: 1, detection table; 2, inner cavity; 3, movable groove; 4, auxiliary stable sliding groove; 5, mounting plate; 6, servo motor; 7, worm; 8, first bearing seat; 9, bidirectional screw rod; 10, worm wheel; 11, second bearing seat; 12, nut block; 13, auxiliary sliding block; 14, clamping block; 15, limiting seat; 16, mounting groove; 17, rolling wheel; 18, sliding groove; 19, sliding block; 20, air rod; 21, expansion groove; 22, expansion block; 23, locking groove; 24, support seat; 25, distance measuring sensor. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0028] In order to facilitate the understanding of the utility model, the utility model will be more fully described below with reference to the related, a number of embodiments of the utility model are given, however, the utility model can be realized in many different forms, and is not limited to the embodiments described in the text, on the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0029] It should be noted that when an element is referred to as "fixed to" another element, it can be directly on the other element or there can be a middle element, and when an element is referred to as "connected to" another element, it can be directly connected to the other element or there can be a middle element, the terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the utility model belongs, the terms used in the specification of the utility model are only for the purpose of describing specific embodiments, and are not intended to limit the utility model, the term "and / or" used herein includes any and all combinations of one or more related listed items. EMBODIMENT

[0031] As Figures 1-4As shown, the utility model provides a technical scheme: in the inside of limit seat 15 set up rolling wheel 17, when leaf spring support enters limit area, rolling wheel 17 is contacted with leaf spring support, because rolling wheel 17 is connected with the top and bottom of installation groove 16 through high-precision bearing, make rolling wheel 17 can rotate freely with very small frictional resistance.

[0032] When leaf spring support moves during limiting, rolling wheel 17 changes original sliding friction into rolling friction, from microcosmic angle, rolling friction is realized relative motion through the rolling contact point between objects, compared with the direct relative sliding of two contact surfaces in sliding friction, the contact area of rolling friction is smaller and the relative motion mode of contact point is more conducive to reducing energy loss, thereby greatly reducing the position deviation of leaf spring support due to friction during movement.

[0033] Meanwhile, the limit components in front and back directions jointly act, the limit components on the front and back sides are made of high-strength steel material, have sufficient rigidity and stability, form effective blocking to leaf spring support in front and back directions, limit the freedom of leaf spring support in front and back directions.

[0034] Leaf spring support is stably limited between the two limit components and does not partially deviate due to the lack of front and back direction limiting, thereby ensuring the stability of leaf spring support during detection, the stable limiting state can ensure that the detection device detects various parameters of leaf spring support more accurately, thereby ensuring that the quality and performance of automobile rear leaf spring support meet the standards, for example, when detecting the flatness of leaf spring support, stable limiting can make the measuring instrument obtain more accurate data and avoid measurement errors caused by support shaking.

[0035] The limit component on the back side is connected between the two sliding blocks 19 on the bottom and the two slide grooves 18 through precision machining, the air rod 20 is connected with the back side limit component as a driving device, the air rod 20 adopts a high-precision air pressure control system and can accurately control the force and stroke of extension and contraction, when different models or sizes of leaf spring support need to be detected, the air rod 20 performs extension and contraction action according to the instruction of the control system. When the air rod 20 is extended, the back side limit component is pushed to slide forward along the slide groove 18; when the air rod 20 is retracted, the back side limit component is pulled to slide backward.

[0036] This sliding adjustment mechanism is based on the principle of action and reaction in mechanics, the force provided by the air rod 20 can overcome the friction between the limit component and the slide groove 18, so that it can slide smoothly, from the perspective of material science, the surface of the slide groove 18 and the sliding block 19 is treated with a low-friction coating, which further reduces the frictional resistance and makes the sliding more smooth.

[0037] By changing the position of the back limiting assembly, the spacing between the two limiting assemblies can be flexibly adjusted to adapt to plate spring supports of different lengths, greatly enhancing the versatility and adaptability of the detection device, improving detection efficiency, and reducing time waste caused by replacing the detection device or manual adjustment. For example, in the automobile production line, facing different batches and different models of automobile rear plate spring supports, the detection device can be quickly adjusted to improve production efficiency.

[0038] The extension block 22 and the extension slot 21 of the limiting seat 15 are designed with strong practicality. When encountering a larger size plate spring support that exceeds the limiting range of the original limiting seat 15, the extension block 22 can be inserted into the extension slot 21 to form an extension of the limiting seat 15. The extension block 22 and the extension slot 21 are designed with a closely fitted dovetail groove structure, which not only ensures the tightness of the connection, but also has a good guiding effect. Then, by installing a high-strength screw in the locking slot 23 at the extension block 22 and the extension slot 21, the extension part is fixed firmly by the tightening action of the screw.

[0039] From the perspective of structural mechanics, the extended limiting seat 15 forms a whole structure that can withstand greater force of the plate spring support and ensure the accuracy of the limiting. In the stress analysis, the extended limiting seat 15 distributes the pressure of the plate spring support evenly to the whole limiting seat 15 through reasonable structural design, avoiding deformation or damage caused by local stress concentration. This extension function can meet the limiting requirements of plate spring supports of different sizes, and enterprises do not need to equip multiple specifications of detection devices for plate spring supports of different sizes, further improving the flexibility and practicality of the detection device, reducing equipment procurement and maintenance costs, and improving the economic benefits of enterprises.

[0040] The inner cavity 2 is provided inside the detection table 1 to provide an installation environment for the whole transmission and driving mechanism. In the inner cavity 2, the mounting plate 5 plays a key role in supporting and fixing the worm 7, the servo motor 6 and the first bearing seat 8. The mounting plate 5 is made of high-strength aluminum alloy material, which has the characteristics of light weight and high strength, can ensure the structural stability of itself, and can reduce the weight of the whole detection table 1, facilitating the movement and installation of the equipment.

[0041] The servo motor 6, as a power source, is closely connected with the mounting plate 5. Its output shaft is connected with the worm 7 through a high-precision coupling. The servo motor 6 has high-precision speed and position control capability and can accurately drive the worm 7 to rotate according to the instructions of the control system.

[0042] For example, in some detection scenarios that require accurate control of the clamping force and position of the plate spring support, the servo motor 6 can accurately adjust the speed and rotation angle of the worm 7, thereby achieving precise control of the whole transmission system.

[0043] The back side of the worm 7 is provided with a first bearing seat 8 made of high-quality steel and equipped with high-precision bearings to ensure the stability and smoothness of the worm 7 during rotation. The selection and installation precision of the bearings directly affect the transmission efficiency and service life of the worm 7. High-precision bearings can reduce the friction resistance and wear of the worm 7 during rotation, ensuring stable power transmission.

[0044] The connection between the worm 7 and the worm gear 10 adopts a special tooth shape design to ensure the meshing accuracy and transmission efficiency between the two. When the worm 7 rotates, it drives the worm gear 10 to rotate through the interaction of the tooth surfaces. This transmission method has a large transmission ratio, which can convert the high-speed low-torque output of the servo motor 6 into low-speed high-torque output of the worm gear 10, meeting the demand of the bidirectional screw rod 9 for large torque, thereby realizing stable clamping operation of the leaf spring bracket.

[0045] The bidirectional screw rod 9 installed on the worm gear 10 is the key component to realize the clamping action. The second bearing seat 11 is installed on the two side walls of the bidirectional screw rod 9. The second bearing seat 11 also uses high-precision bearings to provide support and guidance for the rotation of the bidirectional screw rod 9, ensuring that it can maintain a stable axial position during rotation, avoiding the movement of the nut block 12 due to the offset of the screw rod.

[0046] The two nut blocks 12 installed on the bidirectional screw rod 9 are precisely threaded with the screw rod. The internal threads of the nut blocks 12 are ground to have high precision and surface finish, ensuring the transmission accuracy and smoothness between the nut blocks 12 and the screw rod. When the bidirectional screw rod 9 rotates, the two nut blocks 12 will move relatively or oppositely on the screw rod due to the action of the threads, realizing the clamping or loosening action of the leaf spring bracket.

[0047] The auxiliary sliding blocks 13 provided on the front and back sides of the nut blocks 12 cooperate with the auxiliary stable sliding grooves 4 on the front and back sides of the movable groove 3. The auxiliary sliding blocks 13 are made of wear-resistant engineering plastic, with smooth surface and low friction coefficient. When sliding in the auxiliary stable sliding grooves 4, it can reduce the friction force and ensure the straightness and stability of the nut blocks 12 during movement, preventing rotation or deviation, thereby ensuring that the clamping blocks 14 can accurately operate the leaf spring bracket.

[0048] The top of each of the two nut blocks 12 is provided with a clamping block 14. The surface of the clamping block 14 is wrapped with rubber or other soft materials, which can increase the friction between the clamping block 14 and the leaf spring bracket, prevent the leaf spring bracket from sliding during detection, and avoid damaging the surface of the leaf spring bracket.

[0049] The distance measuring sensor 25 is installed at the center of the detection table 1, and the two support seats 24 are symmetrically installed, which ensures that the distance measuring sensor 25 can accurately detect the distance change between the two clamping blocks 14. The distance measuring sensor 25 uses the principle of laser ranging. After the emitted laser beam is focused and collimated, it is irradiated onto the clamping block 14. The distance between the clamping block 14 is calculated by measuring the reflection time or phase change of the laser.

[0050] During the detection process, when the servo motor 6 drives the bidirectional screw rod 9 to rotate, the clamping block 14 clamps the plate spring support, the distance measuring sensor 25 monitors the position change of the clamping block 14 in real time, and transmits the data to the control system at a high rate.

[0051] The control system analyzes and processes the data fed back by the distance measuring sensor 25 according to the preset program and algorithm, and then judges the distance between the two limit plates.

[0052] Finally, the symmetry is detected according to the prior art disclosed in the comparison file.

[0053] Work flow: First, the operator inputs the corresponding parameters in the control system according to the size information of the plate spring support to be detected. The control system calculates the position required by the back limit assembly according to the preset program, and then the air rod 20 drives the back limit assembly to slide on the sliding groove 18 to adjust the distance between the two limit assemblies, so that it is slightly larger than the length of the plate spring support, ensuring that the plate spring support can be placed smoothly.

[0054] Next, place the plate spring support on the movable groove 3 on the top of the detection table 1, so that it is located between the two limit assemblies. When the plate spring support contacts the rolling wheel 17 inside the limit seat 15, it can move smoothly to the appropriate position and be kept stable under the action of the front and rear limit assemblies.

[0055] If the plate spring support is large in size, the limit seat 15 needs to be expanded. The operator inserts the expansion block 22 into the expansion groove 21 and fixes it in the locking groove 23 with a screw rod. After expanding the limit seat 15, place the plate spring support and limit it.

[0056] Then, start the servo motor 6. The servo motor 6 is connected to the worm 7 through a high-precision coupling, drives the worm 7 to rotate, and the worm 7 drives the worm gear 10 to rotate. Since the worm gear 10 is fixed with the bidirectional screw rod 9 through a key connection, the bidirectional screw rod 9 rotates on the two high-precision second bearing seats 11, so that the two nut blocks 12 connected with the bidirectional screw rod 9 screw on the screw rod move relatively or oppositely.

[0057] The auxiliary sliding blocks 13 on the front and back sides of the nut blocks 12 slide in the auxiliary stable sliding grooves 4 of the movable grooves 3, ensuring the stability of the movement of the nut blocks 12. The clamping blocks 14 on the top of the two nut blocks 12 move to clamp the leaf spring support.

[0058] Meanwhile, the high-precision distance measuring sensors 25 in the two side walls of the front support seat 24 of the front limiting assembly start to work, adopt the laser distance measuring principle, detect the distance between the two clamping blocks 14, and transmit the data to the control system at a high rate. The control system is built-in with advanced data analysis algorithm, analyzes and judges the position and state of the leaf spring support according to the data, thereby completing the symmetrical detection process of the automobile rear leaf spring support, and intuitively displaying the detection result on the operation interface for the operator to view and record.

[0059] Finally, the above-mentioned distance measuring method is only a mature scheme disclosed in the prior art, which is not within the protection scope of the present application. The specific symmetrical detection method or structure can refer to the technical means disclosed in the comparative document. The present application mainly protects the auxiliary mechanism to make the detection equipment in the prior art more perfect and reasonable.

[0060] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and modifications can be made to these embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A symmetrical detection device for automobile rear leaf spring support, comprising a detection table (1), a distance measuring sensor (25) and a support seat (24), characterized in that: The movable slot (3) is arranged at the center of the top of the detection table (1), two sliding grooves (18) are arranged at the back of the movable slot (3) and the top of the detection table (1), the top of the detection table (1) is provided with a limiting assembly at the front and the back, two sliding blocks (19) are arranged at the bottom of the limiting assembly at the back, and an air rod (20) is further arranged at the back of the limiting assembly at the back. The limiting assembly comprises a limiting seat (15), a plurality of installation grooves (16) are arranged in the limiting seat (15), a plurality of rolling wheels (17) are arranged in the installation grooves (16), an expansion slot (21) is arranged on the right side wall of the limiting seat (15), an expansion block (22) is arranged on the left side wall of the limiting seat (15), and a plurality of locking grooves (23) are arranged at the expansion block (22) and the expansion slot (21).

2. The symmetrical detection device for the automobile rear leaf spring support according to claim 1, characterized in that: The limiting assembly at the back is connected with the two sliding grooves (18) through the two sliding blocks (19) at the bottom, and the air rod (20) can drive the limiting assembly at the back to slide.

3. The symmetrical detection device for the automobile rear leaf spring support according to claim 2, characterized in that: The rolling wheels (17) are connected with the top and the bottom of the installation grooves (16) through bearings, so as to realize sliding rotation.

4. The symmetrical detection device for the automobile rear leaf spring support according to claim 3, characterized in that: The inside of the detection table (1) is provided with an inner cavity (2), the inner cavity (2) is provided with an installation plate (5), the back of the installation plate (5) is provided with a worm (7), the front of the installation plate (5) is provided with a servo motor (6), and the back of the worm (7) is provided with a first bearing seat (8).

5. The symmetrical detection device for the automobile rear leaf spring support according to claim 4, characterized in that: The connecting part of the worm (7) is provided with a worm wheel (10), the worm wheel (10) is provided with a bidirectional screw rod (9), the two side walls of the bidirectional screw rod (9) are provided with a second bearing seat (11), the bidirectional screw rod (9) is provided with two nut blocks (12), the front and the back of the two nut blocks (12) are provided with auxiliary sliding blocks (13), and the front and the back of the movable slot (3) are provided with auxiliary stable sliding grooves (4).

6. The symmetrical detection device for the automobile rear leaf spring support according to claim 5, characterized in that: The servo motor (6) can drive the worm (7) to rotate, so as to drive the worm wheel (10) to rotate, the worm wheel (10) is fixedly connected with the bidirectional screw rod (9), and the bidirectional screw rod (9) is driven to rotate on the two second bearing seats (11).

7. The symmetrical detection device for the automobile rear leaf spring support according to claim 6, characterized in that: The two nut blocks (12) are threadedly connected with the bidirectional screw rod (9), the top of the two nut blocks (12) is provided with a clamping block (14), two distance measuring sensors (25) are used in cooperation with the two clamping blocks (14), the distance measuring sensors (25) are arranged at the center of the detection table (1), the two supporting seats (24) are symmetrically arranged, and the two distance measuring sensors (25) are used for detecting the distance between the two clamping blocks (14).

8. The symmetrical detection device for the automobile rear leaf spring support according to claim 7, characterized in that: The limiting seat (15) can be expanded, the expansion block (22) can be inserted into the expansion slot (21) to form expansion, the locking slot (23) is used for installing screw rod to fix, the front surface of the limiting assembly is provided with a supporting seat (24), and the two side walls of the supporting seat (24) are provided with distance measuring sensors (25).

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