Stepless adjustment chassis sling

Abstract

The application relates to a continuously-adjustable chassis hanger. The application comprises a top frame slidingly connected to an aerial track, and hanger structures symmetrically arranged on both sides of the top frame. Each hanger structure comprises a hanger arm extending downward from the top frame, a support arm longitudinally extending along the lower end of the hanger arm, and a hollow cavity provided along the longitudinal length direction of the support arm; a telescopic arm slidingly connected to the hollow cavity; a pressure adjusting assembly connected to the support arm, the pressure adjusting assembly comprising a movable sliding block, a top block and a guide block, the movable sliding block being connected to the support arm and abutting the guide block against the side end of the telescopic arm, the top block being connected to the movable sliding block and used to limit the movement of the movable sliding block, the pressure of the guide block on the telescopic arm being adjusted by adjusting the movable sliding block, so as to adjust the friction between the telescopic arm and the guide block when the telescopic arm is telescoped in the hollow cavity; a front support assembly and a rear support assembly. The application can adapt to different automobile chassis, and the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicle body carrier, in particular to a stepless adjustment chassis lifting appliance. BACKGROUND

[0002] In the production process of the body-in-white, the body-in-white chassis is lifted by the chassis lifting appliance and then sequentially transported to the corresponding work station. The existing chassis lifting appliances for different vehicle models need to be used to support, and a single type of lifting appliance cannot flexibly adapt to the simultaneous production of multiple vehicle models, resulting in low production efficiency and increased cost. SUMMARY

[0003] Therefore, the technical problem to be solved by the present application is to overcome the problem in the prior art that the existing chassis lifting appliances for different vehicle models need to be used to support, and a single type of lifting appliance cannot flexibly adapt to the simultaneous production of multiple vehicle models, resulting in low production efficiency and increased cost.

[0004] To solve the above technical problems, the present application provides a stepless adjustment chassis lifting appliance, which comprises a top frame slidingly connected to an aerial track, and a lifting appliance structure symmetrically arranged on both sides of the top frame. Each part of the lifting appliance structure comprises:

[0005] a lifting arm extending downward from the top frame, a support arm extending longitudinally along the lower end of the lifting arm, and a hollow cavity provided along the longitudinal length of the support arm;

[0006] a telescopic arm slidingly connected to the hollow cavity;

[0007] a pressure adjusting assembly connected to the support arm, the pressure adjusting assembly comprising a movable sliding block, a top block, and a guide block, the movable sliding block being connected to the support arm and abutting the guide block against the side end of the telescopic arm, the top block being connected to the movable sliding block and limiting the movement of the movable sliding block, the pressure of the guide block on the telescopic arm being adjusted by adjusting the movable sliding block, thereby adjusting the friction between the telescopic arm and the guide block when the telescopic arm extends and retracts in the hollow cavity;

[0008] a front support assembly connected to the end of the support arm away from the telescopic arm, the front support assembly being used to support the front body;

[0009] a rear support assembly connected to the telescopic end of the telescopic arm, the rear support assembly being used to support the rear body.

[0010] In one embodiment of the present application, the side end of the support arm is provided with a mounting plane, the mounting plane is provided with a mounting slot, the movable slider end face is extended with a protrusion which extends into the mounting slot, the protrusion is provided with a limiting slot, the limiting slot is provided with a positioning hole, a part of the guide block is matched with the limiting slot, and the guide block is connected with a positioning pin matched with the positioning hole, and the side end of the telescopic arm is provided with a guide slot which is slidably matched with another part of the guide block.

[0011] In one embodiment of the present application, the movable slider is provided with a vertical adjusting waist hole, the adjusting waist hole is connected with an adjusting bolt, the guide block is connected with the mounting plane through the adjusting bolt, the pressure of the movable slider on the guide block can be adjusted through the adjusting bolt, so as to adjust the pressure between the guide block and the telescopic arm.

[0012] In one embodiment of the present application, the top block is provided with a top block bolt between the top block and the mounting plane, and the top block is connected with the mounting plane through the top block bolt, the top block is further connected with a limiting screw, and one end of the limiting screw is abutted with the upper end face of the movable slider.

[0013] In one embodiment of the present application, the front support assembly comprises a support frame connected with the end of the support arm away from the telescopic arm, and the support frame is connected with a front support pin used to support a front positioning hole of the vehicle body.

[0014] In one embodiment of the present application, the rear support assembly comprises a mounting plate connected with the telescopic end of the telescopic arm, a guide seat connected with the mounting plate, a telescopic plate slidably connected with the guide seat, and a lead screw assembly connected with the guide seat, the lead screw assembly is used to drive the telescopic plate to slide in the guide seat in a direction perpendicular to the telescoping direction of the telescopic arm, the telescopic plate is connected with a rear support pin used to support a rear positioning hole of the vehicle body, and the mounting plate is connected with a support block used to support the guide seat.

[0015] In one embodiment of the present application, the lead screw assembly comprises a trapezoidal lead screw and a nut sleeve sleeved with the trapezoidal lead screw, an end cover is screwed with the tail end of the trapezoidal lead screw, a self-lubricating copper sleeve is arranged between the trapezoidal lead screw and the guide seat, and the trapezoidal lead screw is rotatably connected with the guide seat through the self-lubricating copper sleeve, and the nut sleeve is connected with the telescopic plate.

[0016] In one embodiment of the present application, the trapezoidal lead screw is further connected with a half assembly, and the half assembly comprises two half sleeves clamped on the end of the trapezoidal lead screw through fixing bolts.

[0017] In one embodiment of the present application, one end of the hollow cavity of the support arm is further connected with a sealing plate, the telescopic arm and the mounting plate are further connected with a traction support used to traction the telescopic arm, the traction support is provided with a traction hole, and the bottom end of the telescopic arm is connected with a bottom supporting block on one side of the traction support.

[0018] In one embodiment of the present application, the bottom end of the support arm is provided with a fixing plate, and a positioning assembly is connected to the fixing plate, the positioning assembly comprising a positioning sleeve, an adjusting block and an adjusting washer, the positioning sleeve comprising a connecting plate connected to the fixing plate and a cross-shaped sleeve seat protruding from the surface of the connecting plate, a sleeve hole being arranged in the center of the sleeve seat, the adjusting block being in L-shaped structure and connected to the fixing plate, and the positioning sleeve being connected to the adjusting block and being provided with the adjusting washer between the adjusting block and the positioning sleeve.

[0019] The above technical scheme of the present application has the following advantages compared with the prior art:

[0020] The stepless adjustment chassis sling disclosed by the present application can adjust the pressure of the guide block on the telescopic arm through the adjusting movable block, thereby adjusting the friction between the telescopic arm and the guide block when the telescopic arm is telescoped in the hollow cavity, so that the length of the telescopic arm is steplessly adjusted, different vehicle chassis can be adapted, and the production efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to make the content of the present application more easily understood, the present application will be further described in detail below according to specific embodiments of the present application and in combination with the drawings.

[0022] Figure 1 is a schematic diagram of the overall structure of the stepless adjustment chassis sling of the present application.

[0023] Figure 2 is a schematic diagram of the lifting arm structure of the present application.

[0024] Figure 3 is a schematic diagram of the pressure adjusting assembly structure of the present application.

[0025] Figure 4 is a schematic diagram of the other side structure of the pressure adjusting assembly of the present application.

[0026] Figure 5 is a schematic diagram of the telescopic arm structure of the present application.

[0027] Figure 6 is a schematic diagram of the rear support assembly structure of the present application.

[0028] Figure 7 is a schematic diagram of the other side structure of the rear support assembly of the present application.

[0029] Figure 8 is a schematic diagram of the connecting structure of the lead screw assembly of the present application.

[0030] Figure 9 is a schematic diagram of the traction support of the present application.

[0031] Figure 10It is a positioning assembly connection schematic diagram of the present application.

[0032] Figure 11 It is a positioning assembly structure schematic diagram of the present application.

[0033] Description of the drawings: 1, top frame; 2, boom; 21, support arm; 211, sealing plate; 212, traction support; 213, traction hole; 214, bottom block; 22, hollow cavity; 23, mounting plane; 24, mounting groove; 3, telescopic arm; 31, guide groove; 4, pressure adjusting assembly; 41, movable slider; 411, protruding block; 412, limiting groove; 413, positioning hole; 414, adjusting waist hole; 415, adjusting bolt; 42, top block; 421, top block bolt; 422, limiting screw; 43, guide block; 431, positioning pin; 5, front support assembly; 51, support frame; 52, front support pin; 6, rear support assembly; 61, mounting plate; 62, guide seat; 63, telescopic plate; 64, screw assembly; 641, trapezoidal screw; 642, nut; 643, end cover; 644, self-lubricating copper sleeve; 645, fixing bolt; 646, half sleeve; 65, rear support pin; 66, support block; 7, positioning assembly; 71, fixing plate; 72, positioning sleeve; 721, connecting plate; 722, sleeve seat; 723, sleeve hole; 73, adjusting block; 74, adjusting washer. DETAILED DESCRIPTION

[0034] The present application will be further described below in conjunction with the drawings and specific embodiments, so that those skilled in the art can better understand the present application and implement it, but the embodiments are not as a limitation on the present application.

[0035] In the present application, if the direction (up, down, left, right, front and back) is described, it is only for the convenience of describing the technical solution of the present application, and is not indicative or suggestive of the technical features indicated must have a specific orientation, structure and operation in a specific orientation, therefore, cannot be understood as a limitation on the present application.

[0036] In the present application, the meaning of "several" is one or more, the meaning of "multiple" is two or more, "greater than", "less than", "more than" and the like are not included in the number; "above", "below", "within" and the like are understood to include the number. In the description of the present application, if the "first" and "second" are described, they are only used for the purpose of distinguishing technical features, and cannot be understood as indicating or suggesting relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0037] In the present application, unless otherwise explicitly defined, the words such as "arrange", "mount", "connect" and the like shall be understood in a broad sense, for example, can be directly connected, can also be indirectly connected through an intermediate medium; can be fixedly connected, can also be detachably connected, can also be integrally formed; can be mechanically connected, can also be electrically connected or capable of communicating with each other; can be the communication or interaction relationship between two elements. The person skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.

[0038] Referring to Figures 1 to 11 The present application is a continuously adjustable chassis sling, comprising a top frame 1 slidingly connected to an aerial track, a pulley being arranged on the top frame 1, and a sling structure being symmetrically arranged on both sides of the top frame 1, wherein each part of the sling structure comprises:

[0039] A lifting arm 2 extending downward from the top frame 1, a support arm 21 extending longitudinally along the lower end of the lifting arm 2, and a hollow cavity 22 being arranged along the longitudinal length of the support arm 21;

[0040] A telescopic arm 3 slidingly connected to the hollow cavity 22;

[0041] A pressure adjusting assembly 4 connected to the support arm 21, the pressure adjusting assembly 4 comprising a movable sliding block 41, a top block 42, and a guide block 43, the movable sliding block 41 being connected to the support arm 21 and abutting the guide block 43 against the side end of the telescopic arm 3, the top block 42 being connected to the movable sliding block 41 and used to limit the movement of the movable sliding block 41, the pressure of the guide block 43 on the telescopic arm 3 being adjusted by adjusting the movable sliding block 41, so as to adjust the friction between the telescopic arm 3 and the guide block 43 when the telescopic arm 3 is telescoped in the hollow cavity 22;

[0042] A front support assembly 5 connected to the support arm 21 away from the telescopic arm 3, the front support assembly 5 being used to carry a front vehicle body;

[0043] A rear support assembly 6 connected to the telescopic end of the telescopic arm 3, the rear support assembly 6 being used to carry a rear vehicle body.

[0044] Through the above arrangement, the pressure of the guide block 43 on the telescopic arm 3 is adjusted by adjusting the movable sliding block 41, so as to adjust the friction between the telescopic arm 3 and the guide block 43 when the telescopic arm 3 is telescoped in the hollow cavity 22, thereby realizing the stepless adjustment of the length of the telescopic arm 3.

[0045] In this embodiment, the boom 2 and the support arm 21 are welded from rectangular tubes, steel plates, etc., while the telescopic arm 3 is made of high-strength custom aluminum alloy with anodized surface, which is wear-resistant and has high strength. It can slide freely within the hollow cavity 22 of the boom 2 and contact the guide block 43. The guide block 43 is made of CuZn25Al6Mn4 (brass) + Graphite, which can act as a self-lubricant.

[0046] Specifically, refer to Figures 2-5 As shown, the support arm 21 has a mounting plane 23 on its side end, and the mounting plane 23 has a mounting groove 24. The end face of the movable slider 41 extends into the mounting groove 24 with a protrusion 411. The protrusion 411 has a limiting groove 412. The limiting groove 412 has a positioning hole 413. A part of the guide block 43 is engaged with the limiting groove 412, and the guide block 43 is connected to a positioning pin 431 that engages with the positioning hole 413. The telescopic arm 3 has a guide groove 31 on its side end that is slidably engaged with another part of the guide block 43.

[0047] Specifically, refer to Figure 4 As shown, the movable slider 41 is provided with a vertically arranged adjustment waist hole 414, which is symmetrically arranged along the symmetrical cross-section of the movable slider 41. An adjustment bolt 415 is connected inside the adjustment waist hole 414. The guide block 43 is connected to the mounting plane 23 through the adjustment bolt 415. The pressure of the movable slider 41 on the guide block 43 can be adjusted by the adjustment bolt 415, thereby adjusting the pressure between the guide block 43 and the telescopic arm 3. A top block bolt 421 is provided between the top block 42 and the mounting plane 23 and is connected to the mounting plane 23 through the top block bolt 421. The top block 42 is also connected to two limit screws 422, one end of each limit screw 422 abutting against the upper surface of the movable slider 41.

[0048] Specifically, refer to Figure 9 As shown, the front support assembly 5 includes a support frame 51 connected to the support arm 21 at the end away from the telescopic arm 3, and the support frame 51 is connected to a front support pin 52 for carrying the front positioning hole of the vehicle body.

[0049] Specifically, refer to Figures 6-8 As shown, the rear support assembly 6 includes a mounting plate 61 connected to the telescopic end of the telescopic arm 3, a guide seat 62 connected to the mounting plate 61, a telescopic plate 63 slidably connected to the guide seat 62, and a lead screw assembly 64 connected to the guide seat 62. The lead screw assembly 64 is used to drive the telescopic plate 63 to slide in the guide seat 62 in a direction perpendicular to the telescopic direction of the telescopic arm 3. The telescopic plate 63 is connected to a rear support pin 65 for supporting the rear positioning hole of the vehicle body. The mounting plate 61 is connected to a support block 66 for supporting the guide seat 62.

[0050] Specifically, referring to Figures 6-8 As shown in the drawings, the screw rod assembly comprises a trapezoidal screw rod 641 and a nut 642 sleeved on the trapezoidal screw rod 641, the end cap 643 is screwed on the tail end of the trapezoidal screw rod 641, the self-lubricating copper sleeve 644 is arranged between the trapezoidal screw rod 641 and the guide seat 62 and the trapezoidal screw rod 641 is rotatably connected to the guide seat 62 through the self-lubricating copper sleeve 644, and the nut 642 is connected with the telescopic plate 63. The screw rod assembly has a self-locking function, the end cap 643 is screwed on the tail end of the trapezoidal screw rod 641, and the nut 642 can be prevented from being separated from the trapezoidal screw rod 641.

[0051] Specifically, referring to Figure 8 As shown in the drawings, the trapezoidal screw rod 641 is further connected with a half assembly, the half assembly comprises two half sleeves 646 clamped on the end of the trapezoidal screw rod 641 through the fixing bolt 645, and the half assembly plays a role of fixing the trapezoidal screw rod 641.

[0052] Specifically, referring to Figure 9 、 Figure 10 As shown in the drawings, one end of the hollow cavity 22 of the support arm 21 is further connected with the sealing plate 211, the sealing plate 211 can prevent foreign matters from entering the crane boom 2 and causing abnormal telescopic movement of the telescopic arm 3, the telescopic arm 3 and the mounting plate 61 are further connected with the traction bracket 212 for traction of the telescopic movement of the telescopic arm 3, the traction bracket 212 is provided with the traction hole 213, the external switching device can traction the telescopic movement of the telescopic arm 3 through the traction hole 213, the bottom supporting block 214 is connected to the bottom end of the telescopic arm 3 and one side of the traction bracket 212, at the switching station, the switching device can drag the bottom supporting block 214, so that the whole crane boom 2 is at the horizontal height and the telescopic arm 3 moves more stably.

[0053] Specifically, referring to Figure 10 、 Figure 11 As shown in the drawings, the bottom end of the support arm 21 is provided with the fixing plate 71, the fixing plate 71 is connected with the positioning assembly 7, the positioning assembly 7 comprises the positioning sleeve 72, the adjusting block 73 and the adjusting gasket 74, the positioning sleeve 72 comprises the connecting plate 721 connected with the fixing plate 71 and the cross-shaped sleeve seat 722 protruding from the surface of the connecting plate 721, the sleeve hole 723 is arranged in the center of the sleeve seat 722, the adjusting block 73 is in L-shaped structure and connected with the fixing plate 71, and the positioning sleeve 72 is connected with the adjusting block 73 and the adjusting gasket 74 is arranged between the positioning sleeve 72 and the adjusting block 73. Through the arrangement of the positioning assembly 7, the lifting appliance can be fixed after being assembled in place.

[0054] Through the above setting, according to the required hoisting vehicle type, the adjusting movable slider 41 can adjust the pressure of the guide block 43 on the telescopic arm 3, so as to adjust the friction between the telescopic arm 3 and the guide block 43 when the telescopic arm 3 telescopes in the hollow cavity 22, so as to realize stepless adjustment of the length of the telescopic arm 3, and adjust the relative distance of the two rear support pins 65 through the rear support assembly 6, which is flexible and convenient.

[0055] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to examples, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present application, which should be covered in the scope of the claims of the present application.

Claims

1. A continuously adjustable chassis lifting device, comprising a top frame (1) slidably connected to an overhead track, characterized in that, It also includes lifting structures symmetrically arranged on both sides of the top frame (1), each lifting structure including: The boom (2) extends downward to the top frame (1), and a support arm (21) extends longitudinally along the lower end of the boom (2). The support arm (21) is provided with a hollow cavity (22) arranged along its longitudinal length. Telescopic arm (3), which is slidably connected to the hollow cavity (22); A pressure regulating assembly (4) is connected to the support arm (21). The pressure regulating assembly (4) includes a movable slider (41), a top block (42), and a guide block (43). The movable slider (41) is connected to the support arm (21) and abuts the guide block (43) against the side end of the telescopic arm (3). The top block (42) is connected to the movable slider (41) and is used to restrict the movement of the movable slider (41). By adjusting the movable slider (41), the pressure of the guide block (43) on the telescopic arm (3) can be adjusted, thereby adjusting the friction between the telescopic arm (3) and the guide block (43) when it extends and retracts in the hollow cavity (22). A front support assembly (5) is connected to the support arm (21) at the end away from the telescopic arm (3), the front support assembly (5) being used to support the front of the vehicle body; A rear support assembly (6) is connected to the telescopic end of the telescopic arm (3), the rear support assembly (6) being used to support the rear vehicle body; The support arm (21) has a mounting surface (23) on its side end, and a mounting groove (24) is provided on the mounting surface (23). The movable slider (41) has a protrusion (411) extending into the mounting groove (24) on its end face. The protrusion (411) has a limiting groove (412), and a positioning hole (413) is provided in the limiting groove (412). A part of the guide block (43) is fitted into the limiting groove (412), and the guide block (43) is connected to a positioning pin (431) that fits into the positioning hole (413). The telescopic arm (3) has a guide groove (31) on its side end that slides into the other part of the guide block (43). The movable slider (41) is provided with a vertically arranged adjustment waist hole (414), and an adjustment bolt (415) is connected inside the adjustment waist hole (414). The guide block (43) is connected to the mounting plane (23) through the adjustment bolt (415). The pressure of the movable slider (41) on the guide block (43) can be adjusted by the adjustment bolt (415), thereby adjusting the pressure between the guide block (43) and the telescopic arm (3). The rear support assembly (6) includes a mounting plate (61) connected to the telescopic end of the telescopic arm (3), a guide seat (62) connected to the mounting plate (61), a telescopic plate (63) slidably connected to the guide seat (62), and a screw assembly (64) connected to the guide seat (62). The screw assembly (64) is used to drive the telescopic plate (63) to slide in the guide seat (62) in a direction perpendicular to the telescopic direction of the telescopic arm (3). The telescopic plate (63) is connected to a rear support pin (65) for supporting the rear positioning hole of the vehicle body. The mounting plate (61) is connected to a support block (66) for supporting the guide seat (62). The support arm (21) has a fixed plate (71) at its bottom end. The fixed plate (71) is connected to a positioning component (7). The positioning component (7) includes a positioning sleeve (72), an adjusting block (73), and an adjusting shim (74). The positioning sleeve (72) includes a connecting plate (721) connected to the fixed plate (71) and a cross-shaped sleeve seat (722) protruding from the surface of the connecting plate (721). The sleeve seat (722) has a sleeve hole (723) at its center. The adjusting block (73) has an L-shaped structure and is connected to the fixed plate (71). The positioning sleeve (72) is connected to the adjusting block (73) and an adjusting shim (74) is provided between the positioning sleeve (72) and the adjusting block (73).

2. The continuously adjustable chassis lifting device according to claim 1, characterized in that, A top block bolt (421) is provided between the top block (42) and the mounting plane (23) and is connected to the mounting plane (23) through the top block bolt (421). The top block (42) is also connected to a limit screw (422), one end of which abuts against the upper surface of the movable slider (41).

3. The continuously adjustable chassis lifting device according to claim 1, characterized in that, The front support assembly (5) includes a support frame (51) connected to the support arm (21) at one end away from the telescopic arm (3), and the support frame (51) is connected to a front support pin (52) for carrying the front positioning hole of the vehicle body.

4. The continuously adjustable chassis lifting device according to claim 1, characterized in that, The lead screw assembly (64) includes a trapezoidal lead screw (641) and a lead screw nut (642) sleeved on the trapezoidal lead screw (641). An end cap (643) is screwed to the tail end of the trapezoidal lead screw (641). A self-lubricating copper sleeve (644) is provided between the trapezoidal lead screw (641) and the guide seat (62), and the lead screw nut (642) is rotatably connected to the guide seat (62) through the self-lubricating copper sleeve (644). The lead screw nut (642) is connected to the telescopic plate (63).

5. The continuously adjustable chassis lifting device according to claim 4, characterized in that, The trapezoidal lead screw (641) is also connected to a split assembly, which includes two half-sleeves (646) clamped to the end of the trapezoidal lead screw (641) by fixing bolts (645).

6. The continuously adjustable chassis lifting device according to claim 1, characterized in that, The hollow cavity (22) of the support arm (21) is also connected to a sealing plate (211) at one end. The telescopic arm (3) and the mounting plate (61) are also connected to a traction bracket (212) for traction of telescopic arm (3) extension and retraction. The traction bracket (212) is provided with a traction hole (213). The bottom end of the telescopic arm (3) is connected to a bottom support block (214) on one side of the traction bracket (212).

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