A chassis assembly process trolley and chassis assembly line

Abstract

The utility model relates to the technical field of automobile assembly equipment, and in particular to a chassis assembly process trolley and a chassis assembly line. It includes a frame and a moving mechanism arranged at the bottom of the frame, the moving mechanism is used to move on the slide rail of the workshop, and is characterized in that the process trolley also includes a fixing mechanism, the fixing mechanism is arranged at the bottom of the frame and connected to the chain plate of the workshop, the frame is symmetrically provided with support arms, each support arm is fixed with a first placement seat, the first placement seat is used to place the chassis of the car, the lower end of the support arm is connected to a sliding mechanism, and the sliding mechanism is used to drive the support arm to move laterally on the frame. The chassis is supported by the first placement seat on the frame support arm, and the sliding mechanism fixed at the lower end of the first placement seat can slide relative to the frame, and multiple first placement seats cooperate to support the chassis, which increases the scope of use of the process trolley.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile assembly equipment, in particular to a chassis assembly process trolley and a chassis assembly line. Background Art

[0002] Process trolleys are widely used in assembly production lines such as the final assembly of buses during the production process of different types of vehicles such as automobiles and buses.

[0003] When the existing process trolley is used cyclically on the working floor, it can only be applied to the assembly line of the same chassis model. Since the chassis size (chassis width) of different models of cars is different and the width of the process trolley is fixed, the existing process trolley cannot meet the production of cars with different chassis models on the same production line. Summary of the invention

[0004] In order to solve the problem that the existing process trolley cannot meet the production needs of automobiles with different chassis models on the same production line, the utility model proposes a chassis assembly process trolley, which supports the chassis through a first placement seat on a frame support arm, and a sliding mechanism fixed at the lower end of the first placement seat can slide relative to the frame. Multiple first placement seats cooperate to support the chassis, thereby increasing the scope of use of the process trolley.

[0005] In order to achieve the above purpose, the technical solution of the utility model is:

[0006] A chassis assembly process trolley includes a frame and a moving mechanism arranged at the bottom of the frame, the moving mechanism is used to move on the slide rail of the workshop, the process trolley also includes a fixing mechanism, the fixing mechanism is arranged at the bottom of the frame and connected to the chain plate of the workshop, the frame is symmetrically provided with support arms, each support arm is fixed with a first placement seat, the first placement seat is used to place the chassis of the car, the lower end of the support arm is connected with a sliding mechanism, the sliding mechanism is used to drive the support arm to move horizontally on the frame. The moving mechanism can move on the slide rail on the workshop floor, the fixing mechanism is clamped together with the chain plate hole on the working floor, the movement of the chain plate drives the moving assembly to move on the track on the workshop floor, realizes the overall movement of the process trolley and the vehicle chassis, and meets the assembly production requirements of the vehicle; the process trolley first supports the chassis of the vehicle through the cooperation of the sliding mechanism, the support arm and the first placement seat.

[0007] Furthermore, the frame includes two first support frames arranged opposite to each other and a second support frame located on the two first support frames, and the second support frame is connected and fixed to the first support frame.

[0008] Furthermore, the sliding mechanism is located on the second support frame, and the sliding mechanism includes a sliding seat fixed on the second support frame and a sliding plate fixed on the lower end of the support arm, the sliding seat is provided with a sliding groove that cooperates with the sliding plate, the sliding seat is provided with a threaded hole, and the threaded connection bolt in the threaded hole realizes the position limitation of the sliding plate on the sliding seat. The sliding plate at the lower end of the support arm cooperates with the sliding groove provided on the sliding seat to realize the lateral movement of the support arm on the second support frame, and the position of the sliding plate is fixed through the threaded hole on the sliding seat after the position of the placement seat is appropriate.

[0009] Further, the frame includes two first support frames arranged opposite to each other, the two first support frames are provided with relative mounting seats, the sliding mechanism includes a screw rod rotatably connected to the mounting seat, the support arm is provided with a through hole for the screw rod to pass through, the support arm is rotatably connected to the screw rod, a positioning piece is threadedly connected to the screw rod, and positioning pieces are provided on both sides of the support arm, the positioning pieces contact the support arm and limit the support arm on the screw rod. The positioning piece is a nut, which is threadedly connected to the screw rod, and when both sides of the support arm contact the positioning piece, the position of the support arm on the screw rod remains unchanged, and when the positioning piece moves on the screw rod, the position of the support arm is adjustable and rotatable relative to the screw rod, and at this time, the support arm can be adjusted to a suitable position on the screw rod according to the size of the chassis.

[0010] Furthermore, the first support frame is provided with a support seat and the support seat is located on both sides of the screw rod, the screw rod is rotatably connected with a first support plate, the first support plate is fixedly connected to the support seat, the upper end face of the support arm is fixed with a first placement seat, the side of the support arm is provided with a placement groove, the placement groove is used to support the chassis of the car, and the lower end face of the support arm on the side of the placement groove is placed on the upper end face of the support seat. The height of the support seat is certain to ensure that when the support arm rotates to contact the support seat, the placement groove on the side of the support arm remains horizontal, and the placement groove is in a "U" shape; the first support plate rotating on the screw rod is fixedly connected to the support seat, which is used to strengthen the strength of the screw rod to prevent the screw rod from breaking under the gravity of the upper component, and the first support plate is in an inverted convex shape.

[0011] Furthermore, the fixing mechanism includes a fixing seat fixed under the frame, a fixing plate is fixed on one side of the fixing seat, a cylinder is fixed on the fixing plate, a connecting rod is slidably connected in the cylinder, the connecting rod is used to be inserted into the hole of the chain plate, a limiting groove is provided on the cylinder, a through groove is provided on the connecting rod, a plug rod is inserted in the through groove, and the plug rod cooperates with the limiting groove to realize the limiting of the connecting rod on the cylinder. After the connecting rod slides downward in the cylinder, its bottom end is inserted into the hole on the chain plate, thereby realizing the connection between the process trolley and the chain plate.

[0012] Furthermore, the moving mechanism includes a plurality of pulleys, which are evenly rotated and arranged at the bottom of the frame. The rollers rotate to drive the process trolley and the chassis to move as a whole.

[0013] In order to adapt to chassis with larger sizes, the utility model also provides a chassis assembly line, including at least two chassis assembly process trolleys, which are used to support the chassis in cooperation, and each chassis assembly process trolley is connected to the chain plate through a fixing mechanism.

[0014] Furthermore, a limiting mechanism is provided at one end of the frame of the chassis assembly process trolley, and a hook is provided at the other end to cooperate with the limiting mechanism on the adjacent chassis assembly process trolley. The hooks on the two adjacent chassis assembly process trolleys cooperate with the limiting mechanism to realize the connection between the front and rear chassis assembly process trolleys.

[0015] Furthermore, the limiting mechanism includes a connecting plate fixed to the lower side of the second support frame or the support seat, two opposite mounting plates are fixed to the lower side of the connecting plate, a rotating shaft is movably installed on the two mounting plates, two symmetrical second support plates are sleeved on the rotating shaft, a gap is provided between the two second support plates, the two second support plates are located between the two mounting plates, a limiting plate and a limiting rod are also provided between the two second support plates, the limiting plate is located below the connecting plate, a limiting member is fixedly connected to the limiting plate, a gap is provided between the limiting member and the connecting plate, one end of the second support plate extends out of the frame, and the limiting rod is located on the side of the second support plate away from the frame, and the limiting rod cooperates with the hook to realize the connection between the two frames. The limiting member is cylindrical and there is a gap between it and the upper connecting plate. The second supporting plate is free and rotatable relative to the mounting plate. When the second supporting plate rotates, no matter whether the second supporting plate rotates clockwise or counterclockwise, the limiting member will abut against the lower side surface of the connecting plate during the rotation process, thereby controlling the activity of the second supporting plate within a certain range. The positions of the hook and the limiting rod on the two frames correspond. After the hook on the frame approaches the limiting rod, the limiting rod moves upward. After the hook portion of the hook is located below the limiting rod, the limiting rod falls onto the hook portion of the hook under the action of its own gravity, thereby realizing the connection between the two frames.

[0016] Through the above technical solution, the beneficial effects of the utility model are:

[0017] 1. The chassis assembly process trolley places the chassis of the car through the placement seats on the symmetrically arranged support arms. The sliding mechanism fixed at the lower end of the support arm moves horizontally on the frame to adapt to chassis of different sizes, so that the process trolley can meet the production of cars with different chassis models on the same production line; the mobile component slides on the slide rail on the workshop floor, and is fixedly connected to the chain plate on the working floor through the fixed component. The chain plate moves to drive the process trolley and the car chassis to move.

[0018] 2. A sliding seat is fixed on the second support frame on the first frame of the chassis assembly process trolley, a sliding plate is fixed on the lower end of the support arm, a sliding groove cooperating with the sliding plate is opened on the sliding seat, and the first placement seat adapts to chassis of different sizes by moving the sliding plate on the sliding seat, thereby improving the use range of this process trolley.

[0019] 3. A mounting seat is fixed on the first supporting frame on the second frame of the chassis assembly process trolley, and a screw rod is rotatably connected to the mounting seat. The support arm is rotatably connected to the screw rod, and a positioning piece is threadedly connected to the screw rod. When the positioning piece is located on both sides of the support arm, the position of the support arm on the screw rod remains unchanged. When the positioning piece moves on the screw rod, the position of the support arm is adjustable. The first placement seat adapts to chassis of different sizes by moving the support arm on the screw rod. After the support arm is in a suitable position, the support arm can be limited by the positioning piece.

[0020] 4. The support arm on the second frame of the chassis assembly process trolley can rotate on the screw, and a support seat is provided on the side of the first support arm, and a placement groove is opened on the side of the support arm. After the support arm rotates, the placement groove is horizontal and the side of the support arm contacts the support seat. The position of the first placement seat is higher than the position of the placement groove, which provides more height options for the assembly of the chassis and improves the use range of this process trolley.

[0021] 5. The connecting rod in the fixing mechanism of the chassis assembly process trolley can slide in the cylinder, and the insertion rod cooperates with the limiting groove on the cylinder to limit the connecting rod on the cylinder. After the connecting rod slides downward in the cylinder, its bottom end is inserted into the hole on the chain plate, thereby realizing the connection between the process trolley and the chain plate.

[0022] 6. At least two chassis assembly process trolleys are used on the chassis assembly line to support the automobile chassis, thereby increasing the scope of use of a single chassis assembly process trolley. The multiple support points of at least two chassis assembly process trolleys are distributed more evenly, thereby increasing the stability of the chassis placed on the chassis assembly process trolley.

[0023] 7. The two adjacent chassis assembly process trolleys on the chassis assembly line are connected by a limit mechanism and a hook. The second support plate in the limit mechanism is free and rotatable relative to the mounting plate. When the second support plate of the chassis assembly process trolley on the front side rotates toward the direction close to the connecting plate, the hook portion of the hook on the chassis assembly process trolley on the rear side is located below the limit rod, and the limit rod falls onto the hook portion of the hook under the action of its own gravity, thereby realizing the connection between the two frames and facilitating the subsequent transportation of the chassis assembly process trolley by subsequent staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a structural schematic diagram of a first type of frame and a sliding mechanism of a chassis assembly process trolley of the utility model;

[0025] Figure 2 This is an enlarged structural diagram of the A portion of a chassis assembly process trolley of the utility model;

[0026] Figure 3 This is a structural schematic diagram of a second frame and a sliding mechanism of a chassis assembly process trolley of the utility model;

[0027] Figure 4 This is an enlarged structural diagram of the B portion of a chassis assembly process trolley of the utility model;

[0028] Figure 5 It is a structural schematic diagram of a fixing mechanism of a chassis assembly process trolley of the utility model;

[0029] Figure 6 This is a schematic diagram of the structure of the chassis assembly line of the utility model in which two chassis assembly process trolleys cooperate to support the chassis of the automobile;

[0030] Figure 7 The structure diagram of the limiting mechanism of the chassis assembly process trolley of the utility model is shown in FIG. Figure 1 ;

[0031] Figure 8 The structure diagram of the limiting mechanism of the chassis assembly process trolley of the utility model is shown in FIG. Figure 2 ;

[0032] Fig. 9 It is a structural schematic diagram of the chassis assembly line of the utility model in which a hook and a limit rod cooperate to connect two chassis assembly process trolleys.

[0033] In the accompanying drawings, reference numerals: 1 is a support arm, 2 is a first placement seat;

[0034] 21 is a first support frame, 22 is a second support frame, 23 is a sliding seat, 24 is a sliding plate, and 25 is a threaded hole;

[0035] 31 is a mounting seat, 32 is a screw rod, 33 is a positioning member, 34 is a supporting seat, 35 is a first supporting plate, and 36 is a placement slot;

[0036] 61 is a fixing seat, 62 is a fixing plate, 63 is a cylinder, 64 is a connecting rod, 65 is a limiting groove, and 66 is an inserting rod;

[0037] 71 is a hook, 72 is a connecting plate, 73 is a mounting plate, 74 is a rotating shaft, 75 is a second supporting plate, 76 is a limiting plate, 77 is a limiting rod, and 78 is a limiting member;

[0038] 101 is a chassis, 102 is a pulley, 103 is a forklift frame, 104 is a handle, and 105 is a grip bar. DETAILED DESCRIPTION

[0039] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments:

[0040] Example 1

[0041] like Figure 1 , Figure 2 and Figure 5 As shown, this embodiment provides a chassis assembly process trolley, including a frame and a moving mechanism arranged at the bottom of the frame, the moving mechanism is used to move on a slide rail (not shown in the figure) of a workshop, and the process trolley also includes a fixing mechanism, which is arranged at the bottom of the frame and connected to a chain plate (not shown in the figure) of the workshop;

[0042] Specifically, two support arms 1 are symmetrically provided on the frame, and a first placement seat 2 is fixed on each support arm 1. The first placement seat 2 is used to place the chassis 101 of the car. In this embodiment, the first placement seats 2 on the two support arms 1 are relatively arranged, and the cross-section can be an inverted "T" shape or an "L" shape, which can provide better supporting effect on the chassis 101.

[0043] The lower end of the support arm 1 is connected with a sliding mechanism, and the sliding mechanism is used to drive the support arm 1 to move laterally on the frame.

[0044] Specifically, the frame includes two first support frames 21 arranged opposite to each other and a second support frame 22 located on the two first support frames 21, and the second support frame 22 is connected and fixed to the first support frame 21. The sliding mechanism is located on the second support frame 22, and the sliding mechanism includes a sliding seat 23 fixed on the second support frame 22 and a sliding plate 24 fixed on the lower end of the support arm 1, and the sliding seat 23 is provided with a sliding groove matched with the sliding plate 24, and the sliding seat 23 is provided with a threaded hole 25, and the threaded connection bolt in the threaded hole 25 realizes the limiting of the sliding plate 24 on the sliding seat 23.

[0045] In this embodiment, the sliding groove of the sliding seat 23 is in an inverted "T" shape, which matches the shape of the sliding plate 24 and the support arm 1. A plurality of threaded holes 25 are evenly arranged on the upper side of the sliding seat 23 to facilitate the use of bolts to tighten the sliding plate 24 after horizontal movement.

[0046] Specifically, the moving mechanism includes four pulleys 102, and the four pulleys 102 are evenly rotated and arranged at the bottom of the frame. In this embodiment, the four pulleys 102 are evenly rotated and arranged on the side away from the two first support frames 21, so as to realize the movement of the pulleys 102 on the slide rails, thereby driving the movement of the chassis assembly process trolley.

[0047] Specifically, the fixing mechanism includes a fixing seat 61 fixed under the frame, a fixing plate 62 is fixed on one side of the fixing seat 61, a cylinder 63 is fixed on the fixing plate 62, a connecting rod 64 is slidably connected in the cylinder 63, the connecting rod 64 is used to be inserted into the hole of the chain plate, a limiting groove 65 is provided on the cylinder 63, a through groove is provided on the connecting rod 64, an insert rod 66 is inserted in the through groove, and the insert rod 66 cooperates with the limiting groove 65 to realize the limitation of the connecting rod 64 on the cylinder 63.

[0048] like Figure 5 As shown, in this embodiment, the connecting plate 64 is welded or bolted to the middle part of the second support frame 22, and the limiting groove 65 includes a vertical portion, a first limiting portion connected to the upper side of the vertical portion and perpendicular to the vertical portion and having an "L"-shaped cross section, and a second limiting portion connected to the lower side of the vertical portion and perpendicular to the vertical portion and having an "L"-shaped cross section, and the first limiting portion corresponds to the second limiting portion in upper and lower positions;

[0049] Figure 5 This is the state when the connecting rod 64 is not inserted into the chain plate hole. When the fixing mechanism and the chain plate need to be clamped together, the gripping rod 105 is welded to the upper end of the connecting rod 64, and the connecting rod 64 is manually moved upward through the gripping rod 105, so that the insertion rod 66 is disengaged from the limiting position in the first limiting portion, and then the connecting rod 64 is rotated clockwise to move the insertion rod 66 to the vertical portion in the limiting groove 65, and then the connecting rod 64 is moved downward and then rotated counterclockwise to move the insertion rod 66 to the limiting position in the second limiting portion. At this time, the lower end of the connecting rod 64 is also inserted into the chain plate hole, thereby connecting the fixing mechanism and the chain plate.

[0050] Before using the chassis assembly process trolley to assemble the automobile chassis 101, the forklift moves the trolley through the forklift frame 103 so that the pulleys 102 on both sides of the frame can move on the slide rails of the workshop, and then the trolley is connected to the chain plate through a fixing mechanism to achieve a more convenient subsequent movement of the trolley;

[0051] In this embodiment, the chassis 101 is placed by two first placement seats 2. At this time, the position of the support arm 1 on the second support frame 22 is manually adjusted so that the first placement seat 2 on the support arm 1 can adapt to the size of the chassis 101. During this process, the sliding plate 24 at the lower end of the support arm 1 moves in the slide groove. When the two first placement seats 2 are in a suitable position, the sliding plate 24 is connected and tightened through the bolts and threaded holes 25 to prevent the first placement seats 2 from continuing to move. At this time, the chassis 101 can be placed on the two first placement seats 2.

[0052] Example 2

[0053] like Figure 3-4As shown, this embodiment provides another chassis assembly process trolley, which is different from Embodiment 1 in the frame and sliding mechanism of this chassis assembly process trolley. The frame in this embodiment includes two parallel first support frames 21, and the two first support frames 21 are provided with relative mounting seats 31. The sliding mechanism includes a screw rod 32 rotatably connected to the mounting seats 31, and a through hole for the screw rod 32 to pass through is opened on the support arm 1. The support arm 1 is rotatably connected to the screw rod 32, and a positioning member 33 is threadedly connected to the screw rod 32. Positioning members 33 are provided on both sides of the support arm 1, and the positioning member 33 contacts the support arm 1 and limits the support arm 1 on the screw rod 32.

[0054] In this embodiment, there are two support arms 1, and the positioning member 33 is a nut. Nuts are provided on both sides of the support arm 1, and the nuts are in contact with the support arm 1, so that the support arm 1 is limited on the screw rod 32. When the support arm 1 needs to be moved to make the first support seat 2 adapt to the size of the chassis 101, the positioning member 33 is manually rotated to move the positioning member 33 on the screw rod 32. At this time, the positioning member 33 is away from the support arm 1, and the position of the support arm 1 on the screw rod 32 is moved. When the positions of the two first placement seats 2 are suitable, the support arm 1 can be limited by the two positioning members 33.

[0055] Specifically, two support seats 34 are provided on the first support frame 21, and the two support seats 34 are located on both sides of the screw rod 32. A first support plate 35 is rotatably connected to the screw rod 32, and the first support plate 35 is fixedly connected to the support seat 34. A first placement seat 2 is fixed to the upper end surface of the support arm 1, and a placement groove 36 is opened on the side of the support arm 1. The placement groove 36 is used to support the chassis 101 of the car, and the lower end surface of the support arm 1 on the side where the placement groove 36 is opened is placed on the upper end surface of the support seat 34.

[0056] Specifically, when the first support base 2 is used to support the chassis 101 , the lower end surface of the support arm 1 on the side where the placement groove 36 is provided contacts the upper side surface of the support base 34 , thereby ensuring the support stability of the support arm 1 .

[0057] In this embodiment, the support arm 1 can rotate counterclockwise on the screw rod 32 so that the support surface of the placement groove 36 faces upward to support the chassis 101. At this time, the side of the support arm 1 relative to the placement groove 36 falls on the support seat 34 on the other side of the screw rod 32, ensuring the support stability of the support arm 1. The first support seat 1 is at a different height from the placement groove 36, providing two suitable options for the high and low positions of the chassis assembly, thereby improving the use range of this process trolley. The operation is: rotate the positioning member 33 to make the positioning member 33 away from the support arm 1, manually grasp the handle 104 and rotate the support arm 1 90° counterclockwise. At this time, the side of the support arm 1 contacts the upper side of the support seat 34, ensuring the support stability of the placement groove 36.

[0058] In this embodiment, the connecting plate 64 in the fixing mechanism is welded or bolted to the middle of the supporting seat 34 .

[0059] In another possible implementation, in order to ensure the support stability of the support arm 1, corresponding threaded holes that match each other can be opened on the placement groove 36 and the support seat 36, and the support arm 1 and the support seat 36 can be fixed together by screwing in bolts. When the support arm 1 needs to be rotated, the bolts can be removed.

[0060] Example 3

[0061] like Figure 6 As shown, this embodiment provides a chassis assembly line, including at least two chassis assembly process trolleys, and the at least two chassis assembly process trolleys are used to cooperate with each other to support the chassis 101, and each chassis assembly process trolley is connected to the chain plate through a fixing mechanism.

[0062] In this embodiment, the chassis 101 is supported by the first chassis assembly process trolley in the two embodiments 1 or the second chassis assembly process trolley in the two embodiments 2 to cope with the larger chassis 101, and the four first placement seats 2 or placement slots 36 are used to support the chassis 101 to ensure the stability of the placement position of the chassis 101.

[0063] Example 4

[0064] like Figure 7 to Figure 9 As shown, the difference from the above embodiment is that a limiting mechanism is provided at one end of the frame on the chassis assembly process trolley in this embodiment, and a hook 71 is provided at the other end to cooperate with the limiting mechanism on the frame of the adjacent chassis assembly process trolley. The hook 71 is fixed to the side of the first support frame 21, and the hooks 71 on two adjacent chassis assembly process trolleys cooperate with the limiting mechanism to realize the connection of the two chassis assembly process trolleys. Each chassis assembly process trolley is provided with a limiting mechanism and a hook 71, which can connect the chassis assembly process trolleys together. The staff only needs to push one chassis assembly process trolley to move multiple chassis assembly process trolleys, which is convenient for the subsequent staff to transport the chassis assembly process trolleys.

[0065] Specifically, the limiting mechanism includes a connecting plate 72 fixed to the lower side of the second support frame 22 or the support seat 34, and two opposite mounting plates 73 are fixed to the lower side of the connecting plate 72, and a rotating shaft 74 is movably mounted on the two mounting plates 73, and two symmetrical second support plates 75 are sleeved on the rotating shaft 74, and a gap is provided between the two second support plates 75, and the two second support plates 75 are located between the two mounting plates 73. A limiting plate 76 and a limiting rod 77 are also provided between the two second support plates 75. The limiting plate 76 is located below the connecting plate 72, and a limiting member 78 is fixedly connected to the limiting plate 76, and a gap is provided between the limiting member 78 and the connecting plate 72, one end of the second support plate 75 extends out of the frame, and the limiting rod 77 is located on the side of the second support plate 75 away from the frame, and the limiting rod 77 cooperates with the hook 71 to realize the connection of the two chassis assembly process trolleys.

[0066] In this embodiment, the connecting plate 72 of the first chassis assembly process trolley is fixed to the lower side of the second support frame 22 (such as Figure 1 ), the connecting plate 72 of the second chassis assembly process trolley is fixed to the lower side of the support seat 34 away from the hook 71 (such as Figure 3 ).

[0067] In this embodiment, the hook 71 and the limiting mechanism are both located on the side where the two first support frames 21 are close to each other.

[0068] In this embodiment, the limit member 78 is cylindrical and there is a gap between it and the connecting plate 72 above it. The second support plate 75 is in a free state and can rotate relative to the mounting plate 73. When the second support plate 75 rotates, no matter whether the second support plate 75 rotates clockwise or counterclockwise, the limit member 78 will abut against the lower side of the connecting plate 72 during the rotation process, thereby controlling the movement of the second support plate 75 within a certain range to prevent the limit mechanism from dragging on the ground.

[0069] In this embodiment, the connection between the two chassis assembly process trolleys is achieved as follows: the second support plate 75 in the limiting mechanism is in a free state and rotatable relative to the mounting plate 73. When the rear chassis assembly process trolley approaches the front chassis assembly process trolley, the hook 71 presses against the limiting rod 77, so that the second support plate 75 on the front chassis assembly process trolley rotates toward the direction close to the connecting plate 72 (the handle 104 can also be manually held to make the limiting rod 77 move upward), and then the hook portion of the hook 71 on the rear chassis assembly process trolley comes under the limiting rod 77, and the limiting rod 77 falls onto the hook portion of the hook 71 under the action of its own gravity, thereby realizing the connection between the two frames.

[0070] The embodiments described above are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made based on the structures, features and principles described in the patent scope of the present invention should be included in the patent application scope of the present invention.

Claims

1. A chassis assembly process trolley, comprising a frame and a moving mechanism arranged at the bottom of the frame, the moving mechanism being used to move on a slide rail in a workshop, characterized in that: The process trolley also includes a fixing mechanism, which is arranged at the bottom of the frame and connected to a chain plate of the workshop; The frame is symmetrically provided with support arms (1), each support arm (1) being fixed with a first placement seat (2), the first placement seat (2) being used to place the chassis (101) of the vehicle; The lower end of the support arm (1) is connected to a sliding mechanism, and the sliding mechanism is used to drive the support arm (1) to move laterally on the vehicle frame.

2. A chassis assembly process trolley according to claim 1, characterized in that: The vehicle frame comprises two first support frames (21) arranged opposite to each other and a second support frame (22) located on the two first support frames (21), wherein the second support frame (22) is connected and fixed to the first support frame (21).

3. The chassis assembly process trolley according to claim 2, characterized in that: The sliding mechanism is located on the second support frame (22), and comprises a sliding seat (23) fixed on the second support frame (22) and a sliding plate (24) fixed on the lower end of the support arm (1); the sliding seat (23) is provided with a sliding groove that cooperates with the sliding plate (24); the sliding seat (23) is provided with a threaded hole (25); a threaded connection bolt in the threaded hole (25) realizes the position limiting of the sliding plate (24) on the sliding seat (23).

4. The chassis assembly process trolley according to claim 1, characterized in that: The frame comprises two first support frames (21) arranged opposite to each other, the two first support frames (21) are provided with mounting seats (31) opposite to each other, the sliding mechanism comprises a screw rod (32) rotatably connected to the mounting seats (31), the support arm (1) is provided with a through hole for the screw rod (32) to pass through, the support arm (1) is rotatably connected to the screw rod (32), a positioning member (33) is threadedly connected to the screw rod (32), both sides of the support arm (1) are provided with positioning members (33), the positioning members (33) are in contact with the support arm (1) and limit the support arm (1) on the screw rod (32).

5. The chassis assembly process trolley according to claim 4, characterized in that: A support seat (34) is provided on the first support frame (21), and the support seat (34) is located on both sides of the screw rod (32). A first support plate (35) is rotatably connected to the screw rod (32), and the first support plate (35) is fixedly connected to the support seat (34). A first placement seat (2) is fixed to the upper end surface of the support arm (1). A placement groove (36) is provided on the side surface of the support arm (1), and the placement groove (36) is used to support the chassis (101) of the automobile. The lower end surface of the support arm (1) on the side where the placement groove (36) is provided is placed on the upper end surface of the support seat (34).

6. The chassis assembly process trolley according to claim 1, characterized in that: The fixing mechanism comprises a fixing seat (61) fixed below the vehicle frame, a fixing plate (62) being fixed on one side of the fixing seat (61), a cylinder (63) being fixed on the fixing plate (62), a connecting rod (64) being slidably connected in the cylinder (63), the connecting rod (64) being used to be inserted into a hole of the chain plate, a limiting groove (65) being provided in the cylinder (63), a through groove being provided in the connecting rod (64), an inserting rod (66) being inserted in the through groove, and the inserting rod (66) cooperates with the limiting groove (65) to realize the limiting of the connecting rod (64) on the cylinder (63).

7. The chassis assembly process trolley according to claim 1, characterized in that: The moving mechanism comprises a plurality of pulleys (102), and the plurality of pulleys (102) are evenly rotatably arranged at the bottom of the frame.

8. Chassis assembly line, characterized in that: It comprises at least two chassis assembly process trolleys according to any one of claims 1 to 7, the at least two chassis assembly process trolleys cooperate to support the chassis (101), and each chassis assembly process trolley is connected to the chain plate via a fixing mechanism.

9. The chassis assembly line according to claim 8, characterized in that: A limiting mechanism is provided at one end of the chassis assembly process trolley frame, and a hook (71) is provided at the other end thereof to cooperate with the limiting mechanism on the frame of an adjacent chassis assembly process trolley. The hooks (71) on two adjacent chassis assembly process trolleys cooperate with the limiting mechanism to realize the connection between the front and rear chassis assembly process trolleys.

10. The chassis assembly line according to claim 9, characterized in that: The limiting mechanism comprises a connecting plate (72) fixed to the lower side of the second support frame (22) or the support seat (34), two opposite mounting plates (73) are fixed to the lower side of the connecting plate (72), a rotating shaft (74) is movably mounted on the two mounting plates (73), two symmetrical second supporting plates (75) are sleeved on the rotating shaft (74), a gap is provided between the two second supporting plates (75), and the two second supporting plates (75) are located between the two mounting plates (73); A limit plate (76) and a limit rod (77) are further provided between the two second support plates (75); the limit plate (76) is located below the connecting plate (72); a limit member (78) is fixedly connected to the limit plate (76); a gap is provided between the limit member (78) and the connecting plate (72); one end of the second support plate (75) extends out of the vehicle frame, and the limit rod (77) is located on a side of the second support plate (75) away from the vehicle frame; the limit rod (77) cooperates with the hook (71) to realize the connection of the two chassis assembly process trolleys.

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