Locking device for automobile chassis production line

Abstract

A locking device for an automobile chassis production line comprises an automobile body hoisting device, a chassis conveyor and a lifting locking device which are sequentially arranged at intervals from top to bottom, the lifting locking device comprises a base, a transverse moving unit, a fixing frame and a cross beam, the transverse moving unit is arranged at the top of the base, and the fixing frame is arranged on the transverse moving unit; the transverse moving unit is used for enabling the fixing frame to transversely and horizontally move relative to the base, the cross beam is fixedly installed at the top of the fixing frame, a plurality of linear guide rail air cylinders consistent with the cross beam in length direction are arranged on the cross beam, and a lifting unit is arranged on a sliding block of each linear guide rail air cylinder; and a locking unit is arranged at the top of the lifting unit. By means of the multiple moving shafts of the lifting locking device, after the lifting unit lifts the chassis, the locking units on the lifting unit can accurately correspond to bolts needing to be tightened, and the production precision and the production efficiency are greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobiles, and particularly relates to a locking device for an automobile chassis production line. Background Art

[0002] The traditional manual tightening in the chassis assembly and automatic tightening stations cannot meet the increasingly high requirements for automation degree and production efficiency. At present, the manufacturing industry urgently needs an automated tightening device with high reliability, high availability, and high precision, which can greatly improve production efficiency and reduce production costs, so as to ensure the product assembly quality. Content of the Utility Model

[0003] The purpose of the utility model is to provide a locking device for an automobile chassis production line to solve the problems existing in the above-mentioned prior art.

[0004] The above technical purpose of the utility model is achieved through the following technical solutions:

[0005] A locking device for an automobile chassis production line includes a body hoisting device, a chassis transporter, and a lifting and locking device which are sequentially arranged at intervals from top to bottom. The lifting and locking device includes a base, a lateral moving unit, a fixing frame, and a cross beam. The lateral moving unit is arranged at the top of the base, the fixing frame is arranged on the lateral moving unit, the lateral moving unit is used to horizontally move the fixing frame relative to the base, the cross beam is fixedly installed at the top of the fixing frame, a linear guide cylinder is arranged on the cross beam along the length direction of the cross beam, there are multiple linear guide cylinders, and a lifting unit is arranged on the slider of each linear guide cylinder. A locking unit is arranged at the top of the lifting unit.

[0006] By adopting the above technical solutions, the lifting and locking device can improve the degree of freedom of the device through the lateral moving unit and the linear guide cylinder arranged on the cross beam, ensure that the lifting and locking device can move to a suitable position, lift the automobile chassis through the lifting unit, and then lock it through the locking unit. In addition to the existing lateral moving unit, a linear guide can be additionally arranged on the cross beam, so as to facilitate the sliding of the lifting unit on the cross beam, so that it can adapt to and tighten more different types of automobile chassis, and increase the flexible co-line production capacity of the production line.

[0007] In a further embodiment, the lifting unit includes an electric cylinder and a fixing plate. The electric cylinder is fixedly connected with the slider of the linear drive guide through a support frame. The fixing plate is fixedly connected with the telescopic rod at the top of the electric cylinder. Multiple dovetail grooves are arranged on one side of the fixing plate close to the support frame, and multiple vertically arranged dovetail bars are arranged on the fixing frame. The dovetail bars are used to cooperate with the dovetail grooves.

[0008] By adopting the above technical solution, the main functions of the dovetail bar and the dovetail groove are to improve the support strength between the fixed plate and the electric cylinder, prevent the electric cylinder from tipping over when lifting the fixed plate, and reduce the radial turning force on the telescopic rod of the electric cylinder during the lifting process.

[0009] In a further embodiment, the locking unit includes a servo motor, a threaded rod, and a universal wrench. The servo motor is fixedly installed at the bottom of the fixed plate. An avoidance hole for avoiding the rotation shaft of the servo motor is provided on the fixed plate. The threaded rod is fixedly installed at the top of the rotation shaft with its axis vertical, and the universal wrench is fixedly installed at the top of the threaded rod.

[0010] By adopting the above technical solution, the universal wrench on the locking unit can cooperate with a variety of bolts, effectively improving the production flexibility of the production line. The servo motor and the threaded rod can make the universal wrench rotate quickly, so as to complete the tightening.

[0011] In a further embodiment, a support sleeve is sleeved on the threaded rod. The inner wall of the support sleeve is provided with a thread that cooperates with the threaded rod. The bottom end of the support sleeve is provided with an integrally formed extension in the centrifugal direction, and the cross-section of the extension is rectangular. Through holes are provided at the four corners of the top of the extension, and guide posts are fixedly installed in the through holes. Through holes for avoiding the bottom ends of the guide posts to pass through are provided at the four corners of the top of the fixed plate, and guide sleeves that cooperate with the guide posts are fixedly installed in the through holes.

[0012] By adopting the above technical solution, the support sleeve on the threaded rod can play a role in jacking up the chassis, and the through holes and guide posts on the top of the fixed plate can prevent the sleeve from rotating due to the threaded rod, enabling the support sleeve to rise linearly as the threaded rod rotates.

[0013] In a further embodiment, the outer wall of the top end of the support sleeve is provided with a stepped cylindrical surface, and the stepped cylindrical surface is provided with an acute angle rounding shape.

[0014] By adopting the above technical solution, the stepped cylindrical surface on the outer wall of the top end of the support sleeve can play a role in supporting the chassis. Before tightening, the chassis is first pushed upward to ensure the stability of the chassis and the vehicle body.

[0015] In a further embodiment, an infrared rangefinder is provided at the top of the locking device, a locator is provided at the top of the lifting device, and a positioning guide post is provided at the top of the cross beam. The positioning guide post is used to guide the fixed frame to move to a relative position.

[0016] By adopting the above technical solutions, the infrared rangefinder can accurately measure the distance between the locking device and the vehicle chassis, and the positioner can help the lifting device adjust its position relative to the chassis. After precise positioning, it can be guided by the positioning guide column on the top of the crossbeam to help the locking device lock. Brief Description of the Drawings

[0017] Figure 1 is a schematic diagram of the overall structure in a locking device for an automobile chassis production line of the present utility model;

[0018] Figure 2 is a schematic diagram of the structure for embodying the lifting and locking device in a locking device for an automobile chassis production line of the present utility model;

[0019] Figure 3 is a schematic diagram of the structure for embodying the lifting unit and the locking unit in a locking device for an automobile chassis production line of the present utility model.

[0020] In the figures, 1, vehicle body hoisting device; 2, chassis transporter; 3, lifting and locking device; 31, base; 32, lateral moving unit; 33, fixing frame; 34, crossbeam; 35, linear guide cylinder; 36, lifting unit; 361, electric cylinder; 362, fixing plate; 37, locking unit; 371, servo motor; 372, threaded rod; 373, universal wrench; 374, support sleeve; 4, infrared rangefinder; 5, positioner; 6, positioning guide column. Detailed Description of the Preferred Embodiments

[0021] The present utility model will be further described in detail below with reference to the accompanying drawings.

[0022] Among them, the same parts are denoted by the same reference numerals. It should be noted that the terms "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the Figure 1 drawings, and the terms "bottom surface" and "top surface", "inner" and "outer" respectively refer to the directions facing or away from the geometric center of a specific component. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this specification, "a plurality" means two or more unless otherwise specifically defined.

[0023] Embodiment:

[0024] As Figures 1 - 3As shown in the figure, a locking device for an automobile chassis production line includes a body hoisting device 1, a chassis conveyor 2, and a lifting and locking device 3 that are sequentially arranged at intervals from top to bottom. The lifting and locking device 3 includes a base 31, a lateral movement unit 32, a fixing frame 33, and a cross beam 34. The lateral movement unit 32 is arranged on the top of the base 31. The fixing frame 33 is arranged on the lateral movement unit 32. An infrared rangefinder 4 is arranged on the top of the fixing frame 33. A locator 5 is arranged on one side of the fixing frame 33. The lateral movement unit 32 is used to horizontally move the fixing frame 33 relative to the base 31. The cross beam 34 is fixedly installed on the top of the fixing frame 33. A positioning guide post 6 is arranged on the top of the cross beam 34. The positioning guide post 6 is used to guide the fixing frame 33 to move to a relative position. A linear guide cylinder 35 is arranged on the cross beam 34 along the length direction of the cross beam 34. There are multiple linear guide cylinders 35. A lifting unit 36 is arranged on the slider of each linear guide cylinder 35. The lifting and locking device 3 has multiple degrees of freedom and can move in multiple axes. The base 31 can move through the lateral movement unit 32. The linear guide cylinder 35 on the cross beam 34 can drive the lifting unit 36 to move back and forth on the cross beam 34, and the lifting unit 36 itself can move up and down. This ensures that the lifting and locking device 3 can have sufficient degrees of freedom. After precise positioning, the fixing frame 33 is guided to a relative position through the positioning guide post, so as to complete the tightening after assembly.

[0025] As Figures 1 - 3 As shown in the figure, a locking unit 37 is arranged on the top of the lifting unit 36. The locking unit 37 includes a servo motor 371, a threaded rod 372, and a universal wrench 373. The servo motor 371 is fixedly installed at the bottom of a fixing plate 362. An avoidance hole for avoiding the rotation shaft of the servo motor 371 is arranged on the fixing plate 362. The threaded rod 372 is fixedly installed on the top of the rotation shaft with its axis vertical. The universal wrench 373 is fixedly installed at the top end of the threaded rod 372. A support sleeve 374 is sleeved on the threaded rod 372. The inner wall of the support sleeve 374 is provided with a thread that cooperates with the threaded rod 372. The bottom end of the support sleeve 374 is provided with an integrally formed extension edge in the centrifugal direction, and the cross section of the extension edge is rectangular. Through holes are arranged at the four corners of the top of the extension edge. Guide posts are fixedly installed in the through holes. Through holes for avoiding the bottom ends of the guide posts to pass through are arranged at the four corners of the top of the fixing plate 362. Guide sleeves that cooperate with the guide posts are fixedly installed in the through holes. The outer wall of the top end of the support sleeve 374 is provided with a stepped cylindrical surface, and the stepped cylindrical surface is provided with an acute angle rounded shape. The universal wrench 373 on the locking unit 37 can improve the flexibility of the production line and adapt to more different types of bolts. The through holes arranged on the extension edge at the bottom end of the support sleeve 374 on the threaded rod 372 can cooperate with the guide posts on the extension edge, so that the support sleeve 374 can rise or fall along with the rotation of the bolt rod. When the lifting and locking unit 37 lifts and tightens the chassis, the chassis can be stably lifted by relying on the support sleeve 374.

[0026] Specific implementation process: After the body hoisting device 1 and the chassis transporter 2 transport the body and the chassis in place, the lifting and tightening device adjusts the position of the lifting unit 36 by relying on the linear guide cylinder 35 on the lateral moving unit 32 and the cross beam 34. After the position of the lifting unit 36 is aligned with the bolt to be tightened, the lifting unit 36 starts to rise, so that the universal wrench 373 on the locking unit 37 at the top of the lifting unit 36 is aligned with the bolt, and the bolt is tightened by the rotation of the servo motor 371. Multiple guide posts provided on the fixing plate 362 can cooperate with the support sleeve 374 on the threaded rod 372 to prevent the support sleeve 374 from rotating during the rising process, so that the support sleeve 374 supports the chassis during the operation of the locking unit 37, ensuring the smooth progress of the assembly and tightening.

[0027] In the embodiments disclosed by the present utility model, terms such as "installation", "connection", "connection", "fixation" and the like shall be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "connection" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments disclosed by the present utility model can be understood according to specific circumstances.

[0028] This specific embodiment is only an interpretation of the present utility model, and it is not a limitation of the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without creative contributions as needed, but as long as it is within the scope of the claims of the present utility model, it is protected by the patent law.

Claims

1. A locking device for an automobile chassis production line, comprising a body lifting device (1), a chassis transporter (2) and a lifting locking device (3) which are sequentially arranged from top to bottom, characterized in that: The lifting and locking device (3) comprises a base (31), a lateral movement unit (32), a fixed frame (33) and a crossbeam (34); the lateral movement unit (32) is arranged on the top of the base (31); the fixed frame (33) is arranged on the lateral movement unit (32); the lateral movement unit (32) is used to make the fixed frame (33) move horizontally relative to the base (31); the crossbeam (34) is fixedly mounted on the top of the fixed frame (33); a linear guide cylinder (35) is arranged on the crossbeam (34) in the same length direction as the crossbeam (34); a plurality of linear guide cylinders (35) are arranged; a lifting unit (36) is arranged on the slider of each linear guide cylinder (35); and a locking unit (37) is arranged on the top of the lifting unit (36).

2. The locking device for an automobile chassis production line according to claim 1, characterized in that: The lifting unit (36) comprises an electric cylinder (361) and a fixing plate (362); the electric cylinder (361) is fixedly connected to the slider of the linear guide cylinder via a support frame; the fixing plate (362) is fixedly connected to a telescopic rod located at the top of the electric cylinder (361); a plurality of dovetail grooves are arranged on one side of the fixing plate (362) close to the support frame; a plurality of vertically placed dovetail bars are arranged on the fixing frame (33); the dovetail bars are used to cooperate with the dovetail grooves.

3. The locking device for an automobile chassis production line according to claim 2, characterized in that: The locking unit (37) comprises a servo motor (371), a threaded rod (372) and a universal wrench (373); the servo motor (371) is fixedly mounted on the bottom of the fixing plate (362); the fixing plate (362) is provided with an escape hole for escaping the rotating shaft of the servo motor (371); the axis of the threaded rod (372) is vertically fixedly mounted on the top of the rotating shaft; and the universal wrench (373) is fixedly mounted on the top of the threaded rod (372).

4. The locking device for an automobile chassis production line according to claim 3, characterized in that: A support sleeve (374) is sleeved on the threaded rod (372), and the inner wall of the support sleeve (374) is provided with a thread that cooperates with the threaded rod (372). The bottom end of the support sleeve (374) is provided with an integrally formed centrifugal extension, and the cross-section of the extension is rectangular. The four corners of the top of the extension are provided with through holes, and guide columns are fixedly installed in the through holes. The four corners of the top of the fixed plate (362) are provided with through holes for avoiding the bottom end of the guide column to pass through, and guide sleeves that cooperate with the guide column are fixedly installed in the through holes.

5. The locking device for an automobile chassis production line according to claim 4, characterized in that: The outer wall of the top end of the support sleeve (374) is provided with a stepped cylindrical surface, and an acute-angle chamfered shape is provided on the stepped cylindrical surface.

6. The locking device for an automobile chassis production line according to claim 1, characterized in that: An infrared rangefinder (4) is arranged on the top of the fixing frame (33), a positioner (5) is arranged on one side of the fixing frame (33), and a positioning guide column (6) is arranged on the top of the crossbeam (34), and the positioning guide column (6) is used to guide the fixing frame (33) to move to a relative position.

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