A kind of automobile torsion beam fatigue detection device

Abstract

The present invention relates to the technical field of automobile parts detection, and discloses an automobile torsion beam fatigue detection device, comprising a fixed base, a support frame fixedly installed on the upper end of the fixed base, a power cylinder rotatably installed at the center position of the upper end of the support frame, a power shaft connected to the lower side of the power cylinder through a clamping part, a power block rotatably installed on the power shaft, a plurality of power teeth are arranged on the power block, a transmission shaft rotatably arranged on the top of the support frame is connected to the top of the power cylinder through a transmission part a, a worm is installed at the bottom of the transmission shaft, a worm wheel is meshed on the outer side of the worm, a crank frame a is coaxially fixedly installed at the center position of the worm wheel, and a connecting rod frame is hinged on the crank frame a at one end away from the worm wheel. The present invention allows the load block to rotate while moving up and down, thereby generating a vertical pressure load and a horizontal shear load on the automobile torsion beam in a clamped state, and finally simulating the actual use condition of the automobile torsion beam.

Description

Technical Field

[0001] The invention relates to the technical field of automobile parts detection, in particular to an automobile torsion beam fatigue detection device. Background Art

[0002] Torsion beam is a kind of automobile suspension, which is a non-independent suspension. Such automobile suspension is often seen in some compact family cars and compact SUVs. The use of torsion beam suspension in compact cars is on the one hand due to cost restrictions, and on the other hand in order to expand the space of the rear seats and the trunk.

[0003] The left and right trailing arms of the torsion beam rear suspension are connected by a middle torsion beam, making the suspension look like an H-shape. The suspension system is connected to the vehicle body by the front end of the trailing arm. Due to the high rigidity of the trailing arm, a transverse link is usually not required. In addition, the torsion beam rear suspension has a simple structure, low manufacturing cost, is easy to maintain, and occupies less space in the chassis, which can reduce the height of the chassis, thereby increasing the space in the car.

[0004] Currently, automobile torsion beams need to be tested for fatigue strength after being processed to facilitate their safe use in the future. However, the current tests on automobile torsion beams are all conducted in a static environment, which cannot simulate the use of automobile torsion beams under actual operating conditions, resulting in low fatigue strength test accuracy. Therefore, further improvement is needed. Summary of the invention

[0005] The purpose of the present invention is to provide a vehicle torsion beam fatigue detection device to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A vehicle torsion beam fatigue detection device comprises a fixed base, a support frame is fixedly installed on the upper end of the fixed base, a power cylinder is rotatably installed at the center position of the upper end of the support frame, a power shaft is connected to the lower side of the power cylinder through a clamping part, a power block is rotatably installed on the power shaft, and a plurality of power teeth are arranged on the power block, the top of the power cylinder is connected to a transmission shaft rotatably arranged on the top of the support frame through a transmission part a, a worm is installed at the bottom of the transmission shaft, a worm wheel is meshed with the outer side of the worm, a crank frame a is coaxially fixedly installed at the center position of the worm wheel, a connecting rod frame is hingedly connected to the end of the crank frame a away from the worm wheel, a crank frame b is hingedly connected to the end of the connecting rod frame away from the crank frame a, and a rotating gear meshing with the power teeth is fixedly installed on the end of the crank frame b away from the connecting rod frame, a clamping mechanism is rotatably installed on one side of the upper end of the support frame through a limiting part, a clamping shaft is rotatably installed on the other side of the upper end of the support frame, a driving part is arranged on the clamping shaft, and a clamping mechanism is also installed on the end of the clamping shaft away from the support frame.

[0008] As an improved solution of the present invention: the power cylinder is also connected to the output end of the power motor through the transmission part b, and the power motor is installed on the support frame.

[0009] As an improved solution of the present invention: the transmission part b includes a driving pulley installed on the power cylinder, the driving pulley is connected to a driven pulley through a belt, and the driven pulley is installed on the output end of the power motor.

[0010] As an improved solution of the present invention: the transmission part a includes a driving gear fixed to the end of the power cylinder, and a driven gear fixedly installed on the transmission shaft is meshed on the outer side of the driving gear.

[0011] As an improved solution of the present invention: the clamping portion includes a clamping groove arranged on the outer side of the top of the power shaft and a clamping strip arranged on the inner side of the bottom of the power cylinder, and the clamping strip is slidably arranged inside the clamping groove.

[0012] As an improved solution of the present invention: an L-shaped rod body is fixedly installed on one end of the outer side of the power block away from the power teeth, and the L-shaped rod body is slidably arranged on the support frame.

[0013] As an improved solution of the present invention: a load block is fixedly installed at the bottom of the power shaft.

[0014] As an improved solution of the present invention: the limiting part includes a limiting cylinder rotatably set on the support frame, and a limiting shaft is installed inside the limiting cylinder through a sliding member. The sliding member includes a sliding groove set on the inner wall of the limiting cylinder and a sliding bar set on the outside of the limiting shaft, and the sliding bar is slidably set inside the sliding groove.

[0015] As an improved solution of the present invention: the driving part includes a lifting frame fixedly installed on the power block and a clamping gear fixedly installed on the clamping shaft, the lifting frame is provided with a lifting rack meshing with the clamping gear, and the lifting frame is connected with a guide plate fixed on the support frame.

[0016] As an improved solution of the present invention: the clamping mechanism includes a clamping frame, and clamping screws are symmetrically rotatably arranged on the upper and lower sides of the clamping frame. A clamping plate is rotatably installed on one end of the inner side of the clamping screw through a bearing seat, and a handle is fixedly installed on one end of the clamping screw away from the clamping plate.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The automobile torsion beam fatigue detection device has a reasonable structure and a novel design. Through the mutual cooperation of the provided clamping part, the crank frame a and the crank frame b, the load block can be rotated while moving up and down, thereby generating a vertical pressure load and a horizontal shear load on the automobile torsion beam in a clamped state. At the same time, with the cooperation of the driving part and the limiting part, the torsion beam in the clamped state can be rotated at a certain angle, and finally the actual use condition of the automobile torsion beam is simulated, thereby further improving the fatigue detection accuracy, and having strong practicality and high reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall front view structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the overall bottom-up structure of the present invention;

[0021] Figure 3 It is a schematic diagram of the overall rear view structure of the present invention;

[0022] Figure 4 It is a schematic diagram of the overall top view structure of the present invention;

[0023] Figure 5 It is a structural schematic diagram of the clamping mechanism in the present invention;

[0024] Figure 6 Schematic diagram of the installation structure of crank frame a and crank frame b in the present invention;

[0025] Figure 7 for Figure 6 Schematic diagram of the locally enlarged structure of a.

[0026] In the figure: 1. fixed base; 2. support frame; 3. guide plate; 4. lifting frame; 5. power motor; 6. L-shaped rod body; 7. driven pulley; 8. driving pulley; 9. driving gear; 10. driven gear; 11. transmission shaft; 12. worm gear; 13. crank frame a; 14. worm; 15. power cylinder; 16. crank frame b; 17. rotating gear; 18. power tooth; 19. power block; 20. power shaft; 21. load block; 22. connecting rod frame; 23. clamping mechanism; 24. limit cylinder; 25. limit shaft; 26. lifting rack; 27. clamping shaft; 28. clamping gear; 29. ​​snap-in strip; 30. sliding strip; 31. clamping screw; 32. bearing seat; 33. clamping plate; 34. handle; 35. clamping frame. DETAILED DESCRIPTION

[0027] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal connection of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0030] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0031] Example 1

[0032] See also Figures 1 to 7In an embodiment of the present invention, a fatigue detection device for a torsion beam of an automobile comprises a fixed base 1, a support frame 2 is fixedly installed on the upper end of the fixed base 1, and the support frame 2 is an inverted U-shaped frame structure. A power cylinder 15 is rotatably installed at the center position of the upper end of the support frame 2, and a power shaft 20 is connected to the lower side of the inner part of the power cylinder 15 through a clamping part. Through the cooperation of the clamping part, the torque of the power cylinder 15 can be transmitted to the power shaft 20, and a power block 19 is rotatably installed on the power shaft 20. A plurality of power teeth 18 are arranged on the power block 19. The top of the power cylinder 15 is connected to a transmission shaft 11 rotatably arranged on the top of the support frame 2 through a transmission part a. By setting the transmission part a, the torque on the power cylinder 15 can be transmitted to the transmission shaft 11, and finally the power shaft 20 can move up and down while rotating. A worm 14 is installed at the bottom of the transmission shaft 11, and a worm wheel 12 is meshed on the outer side of the worm 14. A crank frame a13 is coaxially fixedly installed at the center position of the worm wheel 12, and a connecting rod is hinged at one end of the crank frame a13 away from the worm wheel 12. The rod frame 22, the connecting rod frame 22 is hinged with a crank frame b16 at one end away from the crank frame a13, and a rotating gear 17 that meshes with the power tooth 18 is fixedly installed on the crank frame b16 at one end away from the connecting rod frame 22. Through the mutual cooperation of the crank frame a13 and the crank frame b16, the rotating gear 17 swings at a certain angle and finally meshes with the power tooth 18, realizing the up and down movement of the power block 19, thereby meeting the up and down movement needs of the power shaft 20 when rotating. A clamping mechanism 23 is rotatably installed on one side through a limit portion, which is used to achieve the purpose of effectively clamping the two ends of the automobile torsion beam to be tested. A clamping shaft 27 is rotatably installed on the other side of the upper end of the support frame 2, and a driving part is provided on the clamping shaft 27. A clamping mechanism 23 is also installed on the end of the clamping shaft 27 away from the support frame 2. Through the cooperation of the driving part, the clamping mechanism 23 can swing at a certain angle while clamping the automobile torsion beam, thereby simulating the bumpy working state of the automobile torsion beam during actual operation.

[0033] In one case of this embodiment, the power cylinder 15 is also connected to the output end of the power motor 5 through the transmission part b, and the power motor 5 is installed on the support frame 2. Specifically, the power motor 5 drives the power cylinder 15 to work through the action of the transmission part b, thereby providing a direct power source for the rotation of the power shaft 20.

[0034] In one case of this embodiment, the transmission part b includes a driving pulley 8 installed on the power cylinder 15, the driving pulley 8 is connected to the driven pulley 7 through a belt, and the driven pulley 7 is installed on the output end of the power motor 5. Specifically, the power motor 5 drives the driving pulley 8 to rotate, and then under the action of the belt, the driven pulley 7 drives the power cylinder 15 to rotate directly.

[0035] In one case of this embodiment, the transmission part a includes a driving gear 9 fixed at the end of the power cylinder 15, and the outer side of the driving gear 9 is meshed with a driven gear 10 fixedly mounted on the transmission shaft 11. Through the arrangement of the above structure, the transmission shaft 11 also performs corresponding synchronous rotation.

[0036] In one case of this embodiment, the clamping portion includes a clamping groove arranged on the outer side of the top of the power shaft 20 and a clamping strip 29 arranged on the inner side of the bottom of the power cylinder 15. The clamping strip 29 is slidably arranged inside the clamping groove. Through the arrangement of the above structure, the power cylinder 15 will not affect the up and down movement of the power shaft 20 while driving the power shaft 20 to rotate.

[0037] In one case of this embodiment, a load block 21 is fixedly installed at the bottom of the power shaft 20 for applying a load to the automobile torsion beam to be tested.

[0038] In one case of this embodiment, the limiting portion includes a limiting cylinder 24 rotatably set on the support frame 2, and a limiting shaft 25 is installed inside the limiting cylinder 24 through a sliding member. The sliding member includes a sliding groove set on the inner wall of the limiting cylinder 24 and a sliding bar 30 set on the outside of the limiting shaft 25. The sliding bar 30 is slidably set inside the sliding groove. By setting the sliding member, not only the synchronous rotation requirements of the clamping mechanism 23 can be met, but also the distance between the two clamping mechanisms 23 can be adjusted to a certain position without affecting the rotation requirements between the two clamping mechanisms 23.

[0039] In one case of this embodiment, the driving part includes a lifting frame 4 fixedly mounted on a power block 19 and a clamping gear 28 fixedly mounted on a clamping shaft 27. The lifting frame 4 is provided with a lifting rack 26 meshing with the clamping gear 28. The lifting frame 4 is penetrated by a guide plate 3 fixed on the support frame 2. Specifically, when the lifting frame 4 moves up and down, the lifting rack 26 moves synchronously and finally meshes with the clamping gear 28, driving the clamping mechanism 23 to swing at a certain angle. The guide plate 3 limits the up and down movement of the lifting frame 4 to prevent the lifting frame 4 from shaking during the movement.

[0040] In one case of this embodiment, the clamping mechanism 23 includes a clamping frame 35, and the clamping screws 31 are symmetrically rotatably arranged on the upper and lower sides of the clamping frame 35. The inner end of the clamping screw 31 is rotatably mounted with a clamping plate 33 through a bearing seat 32, and the end of the clamping screw 31 away from the clamping plate 33 is fixedly mounted with a handle 34. When working, the handle 34 is rotated to rotate the clamping screw 31, and then the rotational motion of the clamping screw 31 is converted into the linear motion of the clamping plate 33 under the action of the bearing seat 32, and finally the purpose of clamping the upper and lower end surfaces of the automobile torsion beam is achieved, and the entire clamping operation is quick and convenient.

[0041] Example 2

[0042] In another embodiment of the present invention, this embodiment is different from the above-mentioned embodiment in that an L-shaped rod body 6 is fixedly installed on the outer side of the power block 19 away from the power tooth 18, and the L-shaped rod body 6 is slidably set on the support frame 2. The set L-shaped rod body 6 is used to limit the up and down movement of the power block 19, thereby avoiding the shaking of the power block 19 during the up and down movement, and also ensuring the meshing accuracy between the power tooth 18 and the rotating gear 17, further improving the reliability of the device.

[0043] The working principle of the present invention is: when working, the automobile torsion beam that needs to be tested is clamped and installed through the clamping mechanism 23, and then the power motor 5 is started, so that the load block 21 is finally rotated and moved up and down, thereby applying a load to the clamping mechanism 23 in a reciprocating swinging state, and finally meeting the fatigue detection needs of the automobile torsion beam. The whole operation process is quick and convenient, and is worthy of popularization and use.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An automobile torsion beam fatigue detection device, comprising a fixed base (1), characterized in that: A support frame (2) is fixedly mounted on the upper end of the fixed base (1), a power cylinder (15) is rotatably mounted on the center position of the upper end of the support frame (2), the lower side of the inner part of the power cylinder (15) is connected to a power shaft (20) via a clamping portion, a power block (19) is rotatably mounted on the power shaft (20), a plurality of power teeth (18) are arranged on the power block (19), the top of the power cylinder (15) is connected to a transmission shaft (11) rotatably mounted on the top of the support frame (2) via a transmission portion a, a worm (14) is mounted on the bottom of the transmission shaft (11), a worm wheel (12) is meshed on the outer side of the worm (14), and a crank is coaxially and fixedly mounted at the center position of the worm wheel (12). A support frame a (13) is hingedly connected to an end of the crank frame a (13) away from the worm gear (12), a crank frame b (16) is hingedly connected to an end of the connecting rod frame (22) away from the crank frame a (13), a rotating gear (17) meshing with a power tooth (18) is fixedly mounted on an end of the crank frame b (16) away from the connecting rod frame (22), a clamping mechanism (23) is rotatably mounted on one side of the upper end of the support frame (2) through a limiting portion, a clamping shaft (27) is rotatably mounted on the other side of the upper end of the support frame (2), a driving portion is arranged on the clamping shaft (27), and a clamping mechanism (23) is also mounted on an end of the clamping shaft (27) away from the support frame (2).

2. The automobile torsion beam fatigue detection device according to claim 1, characterized in that: The power cylinder (15) is also connected to the output end of the power motor (5) via a transmission part b, and the power motor (5) is mounted on the support frame (2).

3. The automobile torsion beam fatigue detection device according to claim 2, characterized in that: The transmission part b comprises a driving pulley (8) mounted on a power cylinder (15), the driving pulley (8) being connected to a driven pulley (7) via a belt, and the driven pulley (7) being mounted on the output end of the power motor (5).

4. The automobile torsion beam fatigue detection device according to claim 3, characterized in that: The transmission part a comprises a driving gear (9) fixed to the end of the power cylinder (15), and a driven gear (10) fixedly mounted on the transmission shaft (11) is meshed on the outer side of the driving gear (9).

5. The automobile torsion beam fatigue detection device according to claim 1, characterized in that: The clamping portion comprises a clamping groove arranged on the outside of the top of the power shaft (20) and a clamping strip (29) arranged on the inside of the bottom of the power cylinder (15), and the clamping strip (29) is slidably arranged inside the clamping groove.

6. The automobile torsion beam fatigue detection device according to claim 5, characterized in that: An L-shaped rod body (6) is fixedly mounted on one end of the outer side of the power block (19) away from the power teeth (18), and the L-shaped rod body (6) is slidably arranged on the support frame (2).

7. The automobile torsion beam fatigue detection device according to claim 1, characterized in that: A load block (21) is fixedly mounted on the bottom of the power shaft (20).

8. The automobile torsion beam fatigue detection device according to claim 1, characterized in that: The limiting portion comprises a limiting cylinder (24) rotatably arranged on the support frame (2), a limiting shaft (25) being installed inside the limiting cylinder (24) via a sliding member, the sliding member comprising a sliding groove arranged on the inner wall of the limiting cylinder (24) and a sliding bar (30) arranged outside the limiting shaft (25), the sliding bar (30) being slidably arranged inside the sliding groove.

9. The automobile torsion beam fatigue detection device according to claim 1, characterized in that: The driving unit comprises a lifting frame (4) fixedly mounted on a power block (19) and a clamping gear (28) fixedly mounted on a clamping shaft (27); a lifting rack (26) meshing with the clamping gear (28) is provided on the lifting frame (4); and a guide plate (3) fixed on a support frame (2) is passed through the lifting frame (4).

10. The automobile torsion beam fatigue detection device according to claim 1, characterized in that: The clamping mechanism (23) comprises a clamping frame (35), wherein clamping screws (31) are symmetrically rotatably arranged on upper and lower sides of the clamping frame (35), a clamping plate (33) is rotatably mounted on one inner end of the clamping screw (31) via a bearing seat (32), and a handle (34) is fixedly mounted on one end of the clamping screw (31) away from the clamping plate (33).

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