Twist detection device

Abstract

This utility model provides a torsion testing device, comprising: a base frame; a connecting seat disposed on the top of the base frame; a horizontal adjustment mechanism disposed on the base frame and capable of adjusting the base frame to keep the connecting seat horizontal; a lifting mechanism disposed on the connecting seat and capable of lifting relative to the connecting seat; and a support seat disposed on the top of the lifting mechanism and capable of lifting with the lifting mechanism. The top of the support seat has an opening, and the support seat has a receiving space inside, with the opening communicating with the receiving space. The opening is used to allow a traction pin to enter the receiving space, and the top of the support seat forms a support surface for supporting the vehicle frame. The support surface is parallel to the connecting seat to ensure the horizontality of the vehicle frame.

Description

Technical Field

[0001] This utility model relates to the field of vehicle frame testing technology, and in particular to a torsion testing device. Background Technology

[0002] During the manufacturing process of a semi-trailer frame, after welding, sandblasting, and painting / baking, stress is released onto the frame product, causing an uneven height between the left and right ends of the front of the frame and the ground, i.e., frame torsion. Once torsion occurs, the frame torsion needs to be corrected. However, the torsion of each frame is not the same; therefore, each semi-trailer needs to be individually tested, and the test data needs to be output to provide a basis for further correction. Utility Model Content

[0003] The purpose of this invention is to provide a torsion testing device for detecting torsion, so as to solve the problems of the prior art.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a torsion testing device, comprising: Base frame; A connecting seat is disposed on the top of the base frame; A horizontal adjustment mechanism is provided on the base frame and can adjust the base frame to keep the connecting seat in a horizontal state; A lifting mechanism is provided on the connecting seat and is capable of moving up and down relative to the connecting seat; A support base is disposed on the top of the lifting mechanism and can move up and down with the lifting mechanism. The top of the support base is provided with an opening, and the support base is provided with a receiving space. The opening communicates with the receiving space. The opening is used to allow the traction pin to enter the receiving space. The top of the support seat forms a support surface, which is used to support the frame. The support surface is parallel to the connecting seat to ensure the levelness of the frame.

[0005] In one embodiment, the lifting mechanism includes: An airbag, which is mounted on the connecting seat, is capable of being inflated to rise or deflated to descend; Multiple chains are spaced apart along the circumference of the airbag on its outer periphery; the two ends of each chain are respectively connected to the bottom of the support base and the connecting base; When the airbag inflates, it lifts the support base, and multiple chains are used to ensure the levelness of the support base.

[0006] In one embodiment, a plurality of the chains are arranged symmetrically about the center of the support base, a plurality of the chains are arranged symmetrically about the center of the connecting base, and the line connecting the center of the airbag and the center of the support base is perpendicular to the support surface.

[0007] In one embodiment, there are multiple airbags, which are stacked vertically and connected to each other. The airbag has a larger horizontal dimension than its vertical dimension.

[0008] In one embodiment, the connecting seat is provided with a receiving groove with a top opening, and the bottom of the connecting seat is provided with a through hole communicating with the receiving groove. The bottom of the airbag is provided with a connecting flange, which is screwed to the through hole. The bottom of the connecting flange is provided with a connecting member communicating with the inside of the airbag. The connecting member extends downward from the connecting seat and is provided with a connecting thread for connecting a compressed air regulating valve.

[0009] In one embodiment, each chain is connected to the connecting seat and to the support seat via adjusting fasteners and shackles. The shackles are used to connect to the chains. The adjusting fasteners include adjusting screws and nuts. The adjusting screw passes through the connecting seat and is screwed to the nut. The adjusting screw passes through the support seat and is screwed to the nut. The level of the support seat is adjusted by adjusting the plurality of nuts. The support base is equipped with multiple levels arranged at intervals along its circumference.

[0010] In one embodiment, the leveling mechanism includes: Multiple sleeves are fixed to the outer periphery of the base frame at intervals along the circumference of the base frame; Multiple support legs are provided, each corresponding to one of the multiple sleeves; the support legs pass through the corresponding sleeves and are screwed to the sleeves to adjust the relative position of the base frame along the vertical direction; Multiple levels are fixed at intervals on the connecting base, and the levels are used to observe whether the connecting base is level.

[0011] In one embodiment, the torsion detection device further includes a plurality of rollers, each of which is correspondingly arranged with a plurality of legs, and the legs are fixed to the top of the rollers; The vertical length of the support leg is greater than the vertical length of the sleeve, and a handwheel is provided at the top of the support leg.

[0012] In one embodiment, the support base includes abutment plates, a support plate, and a fixing plate disposed between the abutment plates and the support plates, the fixing plate being perpendicular to the support plate, and a gap being between the center of the fixing plate and the center of the support plate. The plurality of fixing plates, the support plates, and the abutment plates enclose the receiving space, and the support plate has a through hole in the middle to form the opening.

[0013] In one embodiment, the base frame includes a frame and a plurality of columns disposed on the frame, the bottom of the columns being located inside the frame, and the columns tilting inward from bottom to top so that the distance between the plurality of columns gradually decreases.

[0014] As can be seen from the above technical solution, this utility model has at least the following advantages and positive effects: This utility model's torsion testing equipment includes a base frame, a connecting seat, a leveling mechanism, a lifting mechanism, and a support base. The support base houses the traction pins on the chassis, supporting the chassis. After adjusting the level of the connecting seat using the leveling mechanism, the height of different positions on the chassis is measured, thus obtaining torsion data. This enables on-line testing of the chassis, with the test results output to the next workstation as a basis for chassis calibration. Ultimately, this achieves online chassis testing, significantly reducing logistics costs and improving production efficiency compared to transferring the chassis to a separate testing platform. Attached Figure Description

[0015] Figure 1 and Figure 2 This is a schematic diagram of the structure of the airbag of the torsion detection device of this utility model, raised to different heights.

[0016] Figure 3 This is a structural schematic diagram of the torsion testing device in this utility model from another perspective.

[0017] Figure 4 This is a schematic diagram showing the independent structure of the torsion testing device and the vehicle frame in this utility model.

[0018] Figure 5 This is a schematic diagram of the structure of the torsion testing equipment supporting the vehicle frame in this utility model.

[0019] The annotations in the attached figures are explained as follows: 1. Torque testing equipment; 11. Base frame; 111. Frame; 112. Column; 12. Connecting seat; 121. Side beam; 122. Base plate; 131. Support leg; 132. Sleeve; 133. Level; 134. Handwheel; 141. Airbag; 142. Chain; 15. Support base; 151. Abutment plate; 152. Support plate; 153. Fixing plate; 16. Level; 17. Roller; 18. Connecting component; 2. Frame. Detailed Implementation

[0020] Although the present invention can be readily embodied in various forms, only some specific embodiments are shown in the accompanying drawings and will be described in detail in this specification. It is understood that this specification should be regarded as an exemplary illustration of the principles of the present invention and is not intended to limit the present invention to what is described herein.

[0021] Therefore, a feature pointed out in this specification is used to describe one feature of one embodiment of the present invention, and does not imply that every embodiment of the present invention must have the described feature. Furthermore, it should be noted that this specification describes many features. Although certain features may be combined to illustrate possible system designs, these features may also be used in other combinations not explicitly stated. Therefore, unless otherwise stated, the described combinations are not intended to be limiting.

[0022] In the embodiments shown in the accompanying drawings, the directional indications (such as up, down, left, right, front, and back) used to explain the structure and movement of the various elements of this invention are relative rather than absolute. These descriptions are appropriate when these elements are in the positions shown in the drawings. If the descriptions of the positions of these elements change, these directional indications also change accordingly.

[0023] This application provides a torsion testing device for detecting the torsion of a vehicle frame and providing torsion data to facilitate frame correction.

[0024] Combination Figures 1-3 The torsion testing device 1 includes a base frame 11, a connecting seat 12, a leveling mechanism, a lifting mechanism, and a support seat 15. After the support seat 15 houses the traction pin on the frame 2, it supports the frame 2. After the leveling mechanism adjusts the level of the connecting seat 12, the height of the frame 2 at different positions is detected to obtain torsion data.

[0025] Specifically, the base frame 11 includes a frame 111 and a plurality of columns 112 disposed on the frame 111. The bottom of the columns 112 is located inside the frame 111, and the columns 112 are inclined inward from bottom to top so that the distance between the plurality of columns 112 gradually decreases.

[0026] The frame 111 is square and includes two crossbeams and two longitudinal beams. In this embodiment, the crossbeams and longitudinal beams are made of channel steel. The openings of both the crossbeams and longitudinal beams face outwards.

[0027] The bottom of the column 112 is fixedly connected to the frame 111. In this embodiment, there are four columns 112, which are arranged at the four corners of the frame 111.

[0028] Each column 112 slopes inward from bottom to top at the upper right, gradually reducing the distance between the multiple columns 112. That is, in this embodiment, the shape enclosed by the four columns 112 is a truncated pyramid, which makes the entire base frame 11 more stable.

[0029] Furthermore, each column 112 is provided with a reinforcing rib between itself and the frame 111. The reinforcing rib is fitted around the outer periphery of the column 112 and is fixedly connected to the frame 111. A reinforcing rib is also fixed to the bottom of the column 112 and is fixedly connected to the frame 111. The reinforcing ribs are spaced apart vertically.

[0030] The connecting seat 12 is located on the top of the base frame 11. The connecting seat 12 has a receiving groove with an opening at the top, and a through hole communicating with the receiving groove at the bottom. The through hole extends vertically.

[0031] Specifically, the connecting seat 12 includes a connecting frame and a base plate 122. The connecting frame includes multiple side beams 121 connected in sequence. In this embodiment, there are four side beams 121, which together form a connecting frame with a square cross-section. The side beams 121 are made of channel steel and their openings face outwards. The base plate 122 is connected to the multiple side beams 121 to form a receiving groove with an open top. A through hole is provided in the middle of the connecting plate.

[0032] Furthermore, the connecting seat 12 includes a reinforcing structure disposed between adjacent two side beams 121 to increase the strength of the connecting seat 12.

[0033] When the connecting seat 12 is connected to the base frame 11, the bottom of the side beam 121 is fixedly connected to the top of the column 112.

[0034] The leveling mechanism is mounted on the base frame 11 and can adjust the base frame 11 to keep the connecting seat 12 in a horizontal state. Specifically, the leveling mechanism includes multiple sleeves 132, multiple support legs 131, and multiple levels 133.

[0035] Multiple sleeves 132 are fixed to the outer periphery of the base frame 11 at intervals along its circumference. In this embodiment, there are four sleeves 132, arranged at the four corners of the base frame 11. In practical applications, the crossbeams and longitudinal beams of the frame 111 can be welded to the sleeves 132 respectively.

[0036] Multiple support legs 131 are correspondingly provided with multiple sleeves 132. The support legs 131 are inserted into the corresponding sleeves 132 and screwed into the sleeves 132 to adjust the relative vertical position of the base frame 11. Specifically, the outer circumference of the support legs 131 is provided with external threads, and the inner circumferential wall of the sleeves 132 is provided with internal threads. The external threads and internal threads are adapted to realize the screw connection between the support legs 131 and the sleeves 132.

[0037] The vertical length of the support leg 131 is greater than the vertical length of the sleeve 132, allowing the support leg 131 to extend beyond the sleeve 132. The screw connection between the support leg 131 and the sleeve 132 allows adjustment of the levelness of the top of the base by adjusting the vertical relative position between each support leg 131 and the sleeve 132, and also adjusts the height of the base frame 11 relative to the ground or the support surface supporting the entire torsion detection device 1.

[0038] The torsion testing device 1 also includes multiple rollers 17, each corresponding to a set of feet 131. The feet 131 are fixed to the top of the rollers 17. The rollers 17 enable the torsion testing device 1 to move, thus improving its ease of use. The rollers 17 are omnidirectional wheels with locking mechanisms; that is, the rollers 17 can be locked after reaching their destination, preventing the torsion testing device 1 from moving.

[0039] The top of the support leg 131 is preferably provided with a handwheel 134, and the relative position between the support leg 131 and the sleeve 132 can be adjusted by operating the handwheel 134.

[0040] Multiple levels 133 are fixed at intervals on the connecting seat 12. The levels 133 are used to observe whether the connecting seat 12 is level. In this embodiment, there are four levels 133, which are respectively set on the four side beams 121 of the connecting seat 12. In other embodiments, the number of levels 133 can be other, as long as they are adapted to the polygonal structure of the connecting seat 12.

[0041] The level 133 is located in an outwardly opening groove on the side beam 121 of the connecting seat 12. Preferably, the level 133 is located at the center of the side beam 121.

[0042] The lifting mechanism is mounted on the connecting seat 12 and can be raised and lowered relative to the connecting seat 12.

[0043] Specifically, the lifting mechanism includes an airbag 141 and multiple chains 142. The airbag 141 is disposed on the connecting seat 12 and is capable of inflating to rise or deflating to lower. The multiple chains 142 are spaced apart along the circumference of the airbag 141 on its outer periphery.

[0044] There are multiple airbags 141, which are stacked vertically and connected to each other. In this embodiment, there are three airbags 141. In other embodiments, there may be one, two, four or other numbers of airbags 141, depending on the actual needs.

[0045] Adjacent airbags 141 are connected by a connecting tube. The diameter of the connecting tube is smaller than the diameter of the airbag 141, that is, after the airbag 141 is inflated, the outer periphery of the airbag 141 extends outward beyond the connecting tube.

[0046] The horizontal dimension of the airbag 141 is larger than its vertical dimension. In this embodiment, the cross-section of the airbag 141 is circular, and the diameter of the airbag 141 is larger than its axial height.

[0047] Multiple airbags 141 are coaxially arranged. The line connecting the center of airbag 141 and the center of support base 15 is perpendicular to the support surface.

[0048] The bottom of the airbag 141 is provided with a connecting flange, which is screwed into the through hole on the connecting seat 12 to connect the airbag 141 and the connecting seat 12. That is, the bottom of the airbag 141 located at the bottom is fixed with a connecting flange, and the airbag 141 is fixed to the connecting seat 12 by screwing the connecting flange into the through hole on the connecting plate.

[0049] The bottom of the connecting flange is provided with a connecting member 18 that communicates with the interior of the air bladder 141, and the connecting member 18 extends downward from the connecting seat 12. The connecting member 18 is provided with connecting threads for connecting a compressed air regulating valve.

[0050] The two ends of the chain 142 are connected to the bottom of the support base 15 and the connecting base 12, respectively. Multiple chains 142 are symmetrically arranged about the center of the support base 15 and about the center of the connecting base 12. The chains 142 are of equal length, and this symmetrical arrangement ensures the parallelism between the support base 15 and the connecting base 12, thereby ensuring the levelness of the support base 15.

[0051] Each chain 142 is connected to the connecting seat 12 and to the support seat 15 via adjusting fasteners and shackles. The shackles are used to connect to the chains 142. The adjusting fasteners include adjusting screws and nuts. The adjusting screw passes through the connecting seat 12 and is screwed to the nut. The adjusting screw also passes through the support seat 15 and is screwed to the nut. The level of the support seat 15 is adjusted by adjusting multiple nuts.

[0052] Specifically, the connecting seat 12 and the support seat 15 are provided with through holes, through which the adjusting screw passes, and the nut is then screwed onto the adjusting screw. In this embodiment, the connecting seat 12's base plate 122 is provided with the aforementioned through holes.

[0053] The support base 15 has an opening at its top and a receiving space inside, with the opening communicating with the receiving space. The opening is used to allow the traction pin to enter the receiving space. The top of the support base 15 forms a support surface, which supports the frame 2. The support surface is parallel to the connecting seat 12 to ensure the levelness of the frame 2.

[0054] Specifically, the support base 15 includes parallel and spaced-apart abutment plates 151, support plates 152, and fixing plates 153 disposed between the abutment plates 151 and the support plates 152. The fixing plates 153 are perpendicular to the support plates 152, and there is a gap between the centers of the fixing plates 153 and the support plates 152. The multiple fixing plates 153, support plates 152, and abutment plates 151 enclose a receiving space, and the support plates 152 have a through hole in the middle to form an opening. The upper surface of the support plates 152 constitutes a support surface.

[0055] Specifically, in this embodiment, the fixing plate 153 includes two inclined plates and a transition portion connecting the two plates, with an obtuse angle between the two plates. The center of each fixing plate 153 is spaced from the center of the supporting plate 152 and the abutting plate 151. Specifically, the transition portion is spaced from the center of the supporting plate 152 and the abutting plate 151.

[0056] The fixing plate 153 is provided with weight reduction holes. The outer end of the fixing plate 153 has an inwardly recessed arc-shaped groove.

[0057] The abutment plate 151 is provided with through holes for the adjusting screw to pass through. There are four through holes, which are located at the four corners of the abutment plate 151.

[0058] The support base 15 is provided with a plurality of levels 16 arranged at intervals along its circumference. The levels 16 are used to observe whether the support base 15 is level. Specifically, the levels 16 are located at the bottom of the support plate 152.

[0059] In this embodiment, the lifting mechanism uses an airbag 141 to lift the support seat 15 when it is inflated, and multiple chains 142 are used to ensure the horizontality of the support seat.

[0060] Specifically, the chains 142 around the airbag 141 are of uniform length. After the connecting seat 12 is leveled, the level of the support seat 15 is adjusted by rotating the nut, thereby ensuring that the support surface at the top of the support seat 15 is level.

[0061] Normally, after the first use, adjusting the nut and adjusting screw will ensure that the support base 15 is parallel to the connecting base 12, and no further adjustment is needed for subsequent use. However, after a period of use, it can be readjusted and corrected.

[0062] In other embodiments, the connection between the chain 142 and the connecting seat 12, and between the chain 142 and the support seat 15, can be a fixed connection, that is, during manufacturing, it is sufficient to ensure that the support seat 15 is parallel to the horizontal seat and that the length of the chain 142 is consistent.

[0063] In some embodiments, the lifting mechanism may also be multiple cylinders or multiple hydraulic cylinders, ensuring that the length of the telescopic rod is consistent to ensure that the support seat 15 is parallel to the horizontal seat.

[0064] The steps for testing a vehicle frame 2 using the torsion testing device 1 are as follows: In the initial state, the airbag 141 is not inflated, the support seat 15 is close to the connecting seat 12, and the height of the torsion detection device 1 is small at this time.

[0065] Push or pull the torsion testing device 1 to the bottom of the frame 2, so that the traction pin of the frame 2 is aligned with the opening of the support seat 15. Figure 4 As shown. Locking roller 17 prevents the torsion testing device 1 from moving. During testing, the frame 2 and the torsion testing device 1 are located on the testing surface, which is a horizontal plane.

[0066] Inflate the airbag 141 to raise the support seat 15. As the support seat 15 slowly rises, the towing pin enters the receiving space through the opening of the support seat 15, the multiple chains 142 are fully tensioned, the support seat 15 supports the frame 2 and lifts the front of the frame 2, at which point the semi-trailer outriggers are off the ground.

[0067] Adjust the support leg 131 and use the level 133 to ensure that the connecting seat 12 is in a horizontal position.

[0068] Measure the height of the bottom of the frame 2 on both the left and right sides of the traction pin from the test surface, and record the data.

[0069] See Figure 5 When the front of the frame 2 is lifted, the torsional stress generated by the frame 2 is released, and the deformation and torsion of the frame 2 are reflected on the two end beams on the front side, which present different heights compared with the test surface. At this time, the height h from the lower surface of the two end beams to the ground is measured with the test surface as the reference by using a tape measure or measuring rod to obtain the left and right height difference, that is, to obtain the torsion data of the frame 2.

[0070] After the test is completed, the air in the airbag 141 is released, and the airbag 141 slowly descends. After the support 15 is lowered to below the height of the traction pin, the brake on the roller 17 is released, and the torsion testing device 1 is pushed to one side, away from the area where the frame 2 is located. The frame 2 is then transferred to the next workstation, waiting for the next frame 2 to be inspected to enter the current workstation. The above operating steps are repeated, and the test data is recorded.

[0071] In summary, this torsion testing equipment has the following advantages: Torque testing equipment can perform tests on the vehicle frame assembly line, and the test results are output to the next station as a basis for frame correction, ultimately realizing online vehicle frame testing. Compared with the method of transferring the vehicle frame to a transfer testing station for testing, it significantly reduces logistics costs and improves production efficiency.

[0072] Although the present invention has been described with reference to several typical embodiments, it should be understood that the terminology used is descriptive and exemplary, and not restrictive. Since the present invention can be embodied in many forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims. Therefore, all variations and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A torsion testing device, characterized in that, include: Base frame; A connecting seat is disposed on the top of the base frame; A horizontal adjustment mechanism is provided on the base frame and can adjust the base frame to keep the connecting seat in a horizontal state; A lifting mechanism is provided on the connecting seat and is capable of moving up and down relative to the connecting seat; A support base is disposed on the top of the lifting mechanism and can move up and down with the lifting mechanism. The top of the support base is provided with an opening, and the support base is provided with a receiving space. The opening communicates with the receiving space. The opening is used to allow the traction pin to enter the receiving space. The top of the support seat forms a support surface, which is used to support the frame. The support surface is parallel to the connecting seat to ensure the levelness of the frame.

2. The torsion testing device according to claim 1, characterized in that, The lifting mechanism includes: An airbag, which is mounted on the connecting seat, is capable of being inflated to rise or deflated to descend; Multiple chains are spaced apart along the circumference of the airbag on its outer periphery; the two ends of each chain are respectively connected to the bottom of the support base and the connecting base; When the airbag inflates, it lifts the support base, and multiple chains are used to ensure the levelness of the support base.

3. The torsion testing device according to claim 2, characterized in that, The multiple chains are symmetrically arranged about the center of the support base, and the multiple chains are symmetrically arranged about the center of the connecting base. The line connecting the center of the airbag and the center of the support base is perpendicular to the support surface.

4. The torsion testing device according to claim 2, characterized in that, The number of airbags is multiple, and the multiple airbags are stacked vertically, with adjacent airbags communicating with each other; The airbag has a larger horizontal dimension than its vertical dimension.

5. The torsion testing device according to claim 2, characterized in that, The connecting seat has a receiving groove with a top opening, and the bottom of the connecting seat has a through hole communicating with the receiving groove. The bottom of the airbag has a connecting flange, which is screwed to the through hole. The bottom of the connecting flange has a connecting member communicating with the inside of the airbag. The connecting member extends downward from the connecting seat and has a connecting thread for connecting a compressed air regulating valve.

6. The torsion testing device according to claim 2, characterized in that, Each chain is connected to the connecting seat and to the support seat through adjusting fasteners and shackles. The shackles are used to connect to the chains. The adjusting fasteners include adjusting screws and nuts. The adjusting screws pass through the connecting seat and are screwed to the nuts. The adjusting screws pass through the support seat and are screwed to the nuts. The level of the support seat is adjusted by adjusting multiple nuts. The support base is equipped with multiple levels arranged at intervals along its circumference.

7. The torsion testing device according to claim 1, characterized in that, The horizontal adjustment mechanism includes: Multiple sleeves are fixed to the outer periphery of the base frame at intervals along the circumference of the base frame; Multiple support legs are provided, each corresponding to one of the multiple sleeves; the support legs pass through the corresponding sleeves and are screwed to the sleeves to adjust the relative position of the base frame along the vertical direction; Multiple levels are fixed at intervals on the connecting base, and the levels are used to observe whether the connecting base is level.

8. The torsion testing device according to claim 7, characterized in that, The torsion detection device also includes multiple rollers, each of which is correspondingly arranged with a multiple support legs, and the support legs are fixed to the top of the rollers; The vertical length of the support leg is greater than the vertical length of the sleeve, and a handwheel is provided at the top of the support leg.

9. The torsion testing device according to claim 1, characterized in that, The support base includes abutment plates, support plates, and a fixing plate disposed between the abutment plates and the support plates, the fixing plate being perpendicular to the support plates, and a gap being between the center of the fixing plate and the center of the support plates. The plurality of fixing plates, support plates, and abutment plates enclose the receiving space, and the support plate has a through hole in the middle to form the opening.

10. The torsion testing device according to claim 1, characterized in that, The base frame includes a frame and a plurality of columns disposed on the frame. The bottom of the columns is located inside the frame, and the columns are inclined inward from bottom to top so that the distance between the plurality of columns gradually decreases.

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