Automobile rear suspension pull rod testing fixture

Abstract

The utility model relates to an automobile rear suspension pull rod testing fixture, which comprises a base, a fixing mechanism and a positioning mechanism, wherein the fixing mechanism and the positioning mechanism are arranged at the top of the base and matched with each other; the positioning mechanism comprises a reference block fixed to the base, two inner supporting blocks which are movably connected to the top of the reference block, have the front-back translation function, always have the elastic reset tendency close to each other and are symmetrically arranged in the front-back direction, and two baffles fixed to the top of the reference block and located on the front sides and the rear sides of the two inner supporting blocks correspondingly. The locking unit is arranged on the left side of the reference block and is matched with the two inner supporting blocks; the positioning mechanism further comprises a clamping unit arranged in front of the reference block and matched with the two inner supporting blocks. According to the utility model, the two fork arms on the rear suspension pull rod can be fixed by means of the locking unit and the clamping unit, and a space for detection is fully reserved, so that the structure is simplified, the manufacturing cost is reduced, the manufacturing process is simplified, and the disassembly and assembly steps of the rear suspension pull rod are simplified, so that the detection efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of automobile rear suspension pull rod testing fixture. BACKGROUND

[0002] The rear suspension pull rod of automobile is an important component in automobile suspension system, mainly to support vehicle body, control wheel positioning, absorb impact and prevent roll, etc.The rear suspension pull rod of automobile is mostly assembled, which needs to go through multiple assembly processes, and contains two fork arms, which are fixed by welding method.In order to ensure that the size and hole position accuracy of the assembled rear suspension pull rod meet the requirements, it is necessary to detect it with the help of the matching testing fixture.The testing fixture is a matching clamp used to fix the workpiece for accurate detection of workpiece size in industrial production enterprises.

[0003] The existing testing fixture for the rear suspension pull rod of automobile must be equipped with multiple standardized accessories for turning and translation to fix the two fork arms on the rear suspension pull rod, and at the same time, sufficient space must be left for the detection pin to be inserted, because the shaft hole and sleeve on the two fork arms also need to be detected, which leads to a relatively complex structure of the testing fixture, and further causes relatively high manufacturing cost and complex manufacturing process.In addition, the disassembly and assembly steps of the rear suspension pull rod of automobile are also relatively complicated, which leads to low detection efficiency and needs to be further improved. SUMMARY

[0004] In view of the above status of the prior art, the technical problem to be solved by the utility model is to provide a testing fixture for the rear suspension pull rod of automobile, which simplifies the structure to reduce the manufacturing cost and simplify the manufacturing process, and also simplifies the disassembly and assembly steps of the rear suspension pull rod to improve the detection efficiency.

[0005] The utility model solves the above technical problem by adopting the following technical scheme: a testing fixture for the rear suspension pull rod of automobile, characterized by comprising a base and a fixing mechanism and a positioning mechanism arranged on the top of the base and cooperating with each other.

[0006] The fixing mechanism comprises a seat block fixed on the base, a positioning rod vertically inserted on the top of the seat block, an elevated frame fixed on the base and located on one side of the seat block, a support seat fixed on the base and located on one side of the seat block, and a quick clamp fixed on the elevated frame, wherein the swinging end of the quick clamp cooperates with the end of the positioning rod.

[0007] The positioning mechanism comprises a reference block fixed on the base, two inner support blocks movably connected on the top of the reference block to have forward and backward translation functions and always have elastic reset tendency of approaching each other and are symmetrically arranged front and back, two baffles fixed on the top of the reference block and located on the front and back sides of the two inner support blocks, and a locking unit arranged on the left side of the reference block and cooperating with the two inner support blocks.

[0008] The locking unit comprises a first side seat fixed on the top of the base, a screw rod transversely inserted into the first side seat, and a driving block concentrically fixed on the right end of the screw rod, the radial section of the driving block being in the shape of an ellipse;

[0009] A groove is formed on the opposite side outer wall of each of the two inner support blocks, the driving block extending between the grooves on the two inner support blocks, and the outer wall of the driving block and the bottom wall of each of the two grooves being in mutual cooperation.

[0010] Preferably, the positioning mechanism further comprises a clamping unit arranged in front of the reference block and in mutual cooperation with the two inner support blocks, the clamping unit comprising a second side seat fixed on the top of the base, a driving rod transversely and movably inserted into the second side seat, and a guide bolt transversely and movably inserted between the two inner support blocks and arranged concentrically with the driving rod.

[0011] Preferably, a first counterbore is formed on the upper side outer wall of each of the two inner support blocks, a through hole being formed between the bottom surface center of each of the first counterbores and the adjacent side outer wall of the inner support block, the guide bolt being transversely and movably inserted into the two through holes, and the head of the guide bolt being movably arranged in the first counterbore of the inner support block at the rear.

[0012] Preferably, the clamping unit further comprises a stopper plate concentrically and movably arranged in the first counterbore of the inner support block at the front and fixed on the guide bolt, and a first spring sleeved on the guide bolt and arranged in the first counterbore of the inner support block at the front, the two ends of the first spring being tightly pressed against the bottom surface of the first counterbore and the stopper plate, respectively.

[0013] Preferably, a positioning groove is formed on the outer circumferential surface of the driving rod in a ring shape, and a corresponding pin is inserted into the second side seat of the clamping unit and is radially movable along the driving rod, the end of the pin towards the driving rod being in mutual cooperation with the positioning groove.

[0014] Preferably, a plug is formed at the rear end of the driving rod and is in mutual cooperation with the first counterbore of the inner support block at the front.

[0015] Preferably, a second counterbore is formed on the lower side outer wall of each of the two inner support blocks, and a second spring is arranged between each of the inner support blocks and the adjacent baffle plate, one end of the second spring extending into the second counterbore and being tightly pressed against the bottom surface of the second counterbore, and the other end of the second spring being tightly pressed against the baffle plate.

[0016] Compared with the prior art, the utility model have the advantages that: the utility model discloses with the locking unit and the clamping unit can realize the fixing of two fork arms on the rear suspension pull rod, and the space for detection is reserved fully, and then the structure is simplified to reduce the manufacturing cost and the manufacturing process, and the dismounting steps of the rear suspension pull rod are simplified to improve the detection efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 It is the left front side exploded view of the utility model;

[0018] Fig. 2 It is the left front side exploded view of the clamping unit of the utility model;

[0019] Fig. 3 It is the use state schematic drawing of the utility model. DETAILED DESCRIPTION

[0020] Unless otherwise defined, technical terms or scientific terms used in the utility model should be understood as the usual meaning understood by a person with ordinary skills in the art to which the utility model belongs. The "first", "second" and similar words used in the utility model do not represent any order, quantity or importance, but are only used to distinguish different components. "Include" or "contain" and similar words mean that the elements or objects before the word cover the elements or objects listed after the word and their equivalents, and do not exclude other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connection, but can include electrical connection, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to represent the relative positional relationship, when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0021] In order to keep the following description of the utility model embodiments clear and concise, the utility model omits the detailed description of known functions and known components.

[0022] As Figs. 1-3 shown, an automobile rear suspension pull rod testing fixture, including base 1 and being located at the top of base 1 and mutually cooperating fixed mechanism and positioning mechanism 7;

[0023] The fixed mechanism includes seat block 2 fixed on base 1, positioning rod 4 vertically inserted at the top of seat block 2, heightening stand 5 fixed on base 1 and located at one side of seat block 2, support seat 3 fixed on base 1 and located at one side of seat block 2, and quick clamp 6 fixed on heightening stand 5, the swing end of quick clamp 6 and the end of positioning rod 4 are mutually cooperated;

[0024] The positioning mechanism 7 comprises a reference block 71 fixed on the base 1, two inner support blocks 72 movably connected on the top of the reference block 71 and having front and rear translation functions and always having elastic return tendency of approaching each other and being symmetrically arranged front and rear, two baffles 73 fixed on the top of the reference block 71 and respectively located on the front and rear sides of the two inner support blocks 72, and a locking unit arranged on the left side of the reference block 71 and cooperated with the two inner support blocks 72.

[0025] The locking unit comprises a first side seat 74 fixed on the top of the base 1, a screw rod 76 transversely and screwedly inserted in the first side seat 74, and a driving block 78 concentrically fixed on the right end of the screw rod 76, the radial section shape of the driving block 78 is oval.

[0026] The opposite side outer walls of the two inner support blocks 72 are respectively provided with a recess 721, the driving block 78 is inserted between the recesses 721 on the two inner support blocks 72, and the outer wall of the driving block 78 is cooperated with the bottom wall of the two recesses 721.

[0027] The positioning mechanism 7 further comprises a clamping unit arranged in front of the reference block 71 and cooperated with the two inner support blocks 72, the clamping unit comprises a second side seat 711 fixed on the top of the base 1, a driving rod 712 transversely and movably connected in the second side seat 711, and a guide bolt 79 transversely and movably connected between the two inner support blocks 72 and concentrically arranged with the driving rod 712.

[0028] The opposite side outer walls of the two inner support blocks 72 are respectively provided with a first counterbore 723 concentrically arranged above, a through hole 724 is arranged between the bottom surface center of each first counterbore 723 and the adjacent side outer wall of the inner support block 72, the guide bolt 79 is transversely and movably connected in the two through holes 724, and the head of the guide bolt 79 is movably arranged in the first counterbore 723 on the rear inner support block 72.

[0029] The clamping unit further comprises a baffle 77 concentrically and detachably fixed on the guide bolt 79 and movably arranged in the first counterbore 723 on the front inner support block 72, and a first spring 710 sleeved on the guide bolt 79 and arranged in the first counterbore 723 on the front inner support block 72, and the two ends of the first spring 710 are respectively abutted against the bottom surface of the first counterbore 723 and the baffle 77.

[0030] The outer circumferential surface of the driving rod 712 is provided with a plurality of annularly arranged positioning grooves 7121, and correspondingly, one side of the second side seat 711 is further provided with a latch 713 which can radially and telescopically move along the driving rod 712, and one end of the latch 713 towards the driving rod 712 is cooperated with the positioning grooves 7121.

[0031] The rear end of the driving rod 712 is further formed with a plug 7122 matched with the first counterbore 723 on the front one of the inner support blocks 72.

[0032] The lower side of the outer wall of each of the two inner support blocks 72 is further formed with a second counterbore 722, and a second spring 75 is arranged between each of the inner support blocks 72 and the adjacent baffle 73, one end of the second spring 75 extending into the second counterbore 722 and abutting against the bottom surface of the second counterbore 722, and the other end of the second spring 75 abutting against the baffle 73.

[0033] Working principle:

[0034] The rear suspension pull rod 8 is laid horizontally, and the main body portion thereof is placed on the top of the seat block 2, and the end portion of the positioning rod 4 is inserted into the central shaft hole of the main body portion, and the top of the support seat 3 is supported under the muscle block between the roots of the two fork arms 81 on the rear suspension pull rod 8 to play a supporting role.

[0035] Then, the screw rod 76 in the locking unit is screwed to rotate the driving block 78 to the position with the minimum front-rear width. Since the radial cross-sectional shape of the driving block 78 is elliptical, at this time, the major axis of the ellipse is vertically distributed, and the two inner support blocks 72 are close to each other under the rebounding force of the two second springs 75, until the adjacent side outer walls of the two inner support blocks 72 are in close contact with each other, and then the end portions of the two fork arms 81 are placed on the front and rear sides of the two inner support blocks 72, respectively. Finally, the screw rod 76 is screwed again to rotate the driving block 78, so that the major axis of the ellipse of the driving block 78 gradually tilts, so that the two ends of the major axis extrude the bottom walls of the two grooves 721, respectively, so that the two inner support blocks 72 gradually separate, until the opposite side outer walls of the two inner support blocks 72 are respectively in close contact with the end inner walls of the two fork arms 81, so as to tightly support the two fork arms 81 from the inside to the outside. Since the screw rod 76 is transversely inserted and screwed in the first side seat 74, the screw rod 76 and the first side seat 74 have a large resistance, and the rebounding force of the two second springs 75 cannot force the screw rod 76 to rotate, thereby ensuring that the two inner support blocks 72 cannot be displaced.

[0036] Then, the handle of the quick clamp 6 is rotated again to swing the swing end downward until it is pressed against the top of the body portion of the rear suspension pull rod 8, and then the driving rod 712 is pushed backward until the rear end thereof is inserted into the shaft hole 83 in the front fork arm 81 and the first counterbore 723 in the front inner support block 72, thereby pushing the guide bolt 79 to move rightward until the head of the guide bolt 79 extends out of the first counterbore 723 and is inserted into the sleeve 82 in the rear fork arm 81, and the stop piece 77 is attached to the bottom surface of the first counterbore 723 in the front inner support block 72, in the process, the first spring 710 is compressed, and then the pin 713 is pressed to insert one end thereof into the positioning groove 7121 to prevent the driving rod 712 from moving, so the fixing of the two fork arms 81 is completed.

[0037] Finally, the size and hole position of each designated position on the rear suspension pull rod 8 can be detected by using the detection tool such as the go-no-go gauge, and after the detection is completed, the pin 713 is pulled outward to move one end thereof away from the positioning groove 7121, and the driving rod 712 moves forward under the rebound force of the first spring 710 to reset, and the guide bolt 79 also moves forward under the rebound force of the first spring 710 to reset by using the stop piece 77 until the head of the guide bolt 79 is retracted into the first counterbore 723 in the rear inner support block 72, so the locking of the two fork arms 81 is released, and then the screw rod 76 is screwed to move the two inner support blocks 72 closer to each other by using the rebound force of the two second springs 75, and the handle of the quick clamp 6 is rotated again to swing the swing end upward and away from the body portion of the rear suspension pull rod 8, and then the rear suspension pull rod 8 is taken out upward.

[0038] The locking unit and the clamping unit can be used to fix the two fork arms 81 on the rear suspension pull rod 8, and the space for detection is fully reserved, so the structure is simplified to reduce the manufacturing cost and simplify the manufacturing process, and the disassembly and assembly steps of the rear suspension pull rod 8 are also simplified to improve the detection efficiency.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced with equivalent ones; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An automobile rear suspension tie rod testing fixture, characterized in that, The fixing mechanism and the positioning mechanism are arranged on the top of the base and cooperated with each other; The fixing mechanism comprises a seat block fixed on the base, a positioning rod vertically inserted on the top of the seat block, a heightening frame fixed on the base and located on one side of the seat block, a supporting seat fixed on the base and located on one side of the seat block, and a quick clamp fixed on the heightening frame, the swinging end of the quick clamp being cooperated with the end of the positioning rod; The positioning mechanism comprises a reference block fixed on the base, two inner supporting blocks movably connected on the top of the reference block and having the front and back translation function and always having the elastic reset tendency of approaching each other and being symmetrically arranged in front and back, two baffles fixed on the top of the reference block and respectively located on the front and back sides of the two inner supporting blocks, and a locking unit arranged on the left side of the reference block and cooperated with the two inner supporting blocks; The locking unit comprises a first side seat fixed on the top of the base, a screw rod transversely inserted and screwed in the first side seat, and a driving block concentrically fixed on the right end of the screw rod, the radial cross section shape of the driving block being oval; Two recesses are arranged on the opposite outer walls of the two inner supporting blocks, the driving block being inserted between the recesses on the two inner supporting blocks, and the outer wall of the driving block being cooperated with the bottom wall of the two recesses.

2. The automobile rear suspension tie rod testing fixture according to claim 1, wherein, The positioning mechanism further comprises a clamping unit arranged in front of the reference block and cooperated with the two inner supporting blocks, the clamping unit comprising a second side seat fixed on the top of the base, a driving rod transversely and movably inserted and connected in the second side seat, and a guide bolt transversely inserted and connected between the two inner supporting blocks and concentrically arranged with the driving rod.

3. The automobile rear suspension tie rod testing fixture according to claim 2, wherein, A first counterbore concentrically distributed is arranged above the opposite outer walls of the two inner supporting blocks, a through hole being arranged between the bottom surface center of each first counterbore and the similar outer wall on the inner supporting block, the guide bolt being transversely and movably inserted and connected in the two through holes, and the head of the guide bolt being movably arranged in the first counterbore on the inner supporting block in the rear.

4. The automobile rear suspension tie rod testing fixture according to claim 3, characterized in that, The clamping unit further comprises a baffle concentrically and detachably fixed on the guide bolt and movably arranged in the first counterbore on the inner supporting block in the front, and a first spring sleeved on the guide bolt and arranged in the first counterbore on the inner supporting block in the front, the two ends of the first spring being tightly pressed on the bottom surface of the first counterbore and the baffle respectively.

5. The automobile rear suspension tie rod testing fixture of claim 2, wherein, A positioning groove is arranged on the outer circumferential surface of the driving rod, and correspondingly, a bolt is inserted on one side of the second side seat and can radially extend and contract relative to the driving rod, and one end of the bolt towards the driving rod being cooperated with the positioning groove.

6. The automobile rear suspension tie rod testing fixture of claim 3, wherein, A plug is further formed on the rear end of the driving rod and cooperated with the first counterbore on the inner supporting block in the front.

7. The automobile rear suspension tie rod testing fixture of claim 1, wherein, A second counterbore is further arranged below the opposite outer walls of the two inner supporting blocks, and a second spring is further arranged between each inner supporting block and the similar baffle, one end of the second spring being inserted into the second counterbore and tightly pressed on the bottom surface of the second counterbore, and the other end of the second spring being tightly pressed on the baffle.

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