Sliding supporting block for ground drag chain trolley

Abstract

The utility model discloses a sliding supporting block for a ground drag chain trolley, which comprises a base, the base is connected with the bottom ends of a third spring and a fourth spring, the top ends of the third spring and the fourth spring are connected with the bottom surface of a supporting seat, the top surface of the supporting seat is connected with the bottom surface of the bottom surface, and a fixing block is arranged on the surface of a bottom plate. The supporting plate covers the outer surface of the fixing block; when the ground drag chain trolley is in an inclined state, the supporting plate slides along the fixing block, the third spring and the fourth spring deform, and the bottom plate rotates; the ground drag chain trolley returns to the horizontal state, and the supporting plate and the bottom plate return to the initial positions; the supporting block comprises the rotatable bottom plate, when the trolley is in the inclined state, the bottom plate rotates to enable the bottom plate to be matched with the posture change of the truck axle, and the situation that when the posture of the axle changes, the bottom plate is fixedly connected with the trolley, so that the rear trolley is driven by the axle, and wheels of the rear trolley tilt is avoided; therefore, the accident that the trolley topples due to the fact that the wheel upwarp angle is too large can be avoided.

Description

Technical Field

[0001] The utility model relates to the field of commercial vehicle assembly, in particular to a sliding support block used on a floor drag chain trolley. Background Art

[0002] When the ground drag chain trolley is used to support the truck axle, two left and right support blocks are installed on each ground drag chain trolley, and the truck axle is placed on the support blocks of the ground drag chain trolley during the transportation process. When transporting a truck axle, two ground drag chain trolleys are generally used. The front axle of the truck axle is installed on the support block of the front ground drag chain trolley, and the rear axle of the truck axle is installed on the support block of the rear ground drag chain trolley. However, there is no need for a separate chain or other connecting parts to connect the front and rear ground drag chain trolleys. It is only necessary to install the front axle of the axle on the support block of the front ground drag chain trolley and the rear axle of the axle on the support block of the rear ground drag chain trolley. The ground drag chain trolley needs to be compatible with different truck axles.

[0003] In horizontal areas, when a ground drag chain trolley is used to transport a truck axle, the posture of the axle remains unchanged, and the contact point between the axle and the trolley support block remains fixed. The support block on the trolley only needs to be made into a rigid fixed mechanism. In climbing and downhill sections, for example, when the front trolley is in a horizontal section and the rear trolley is in a climbing section, the posture of the axle changes to a posture with the front axle high and the rear axle low, and the support block on the trolley supporting the axle is a rigid fixed mechanism, and the support block cannot move synchronously to adapt to the change in the posture of the axle. Therefore, when the axle presents a posture with the front axle high and the rear axle low, the axle will drive the wheels of the rear trolley to tilt up. When the tilt angle of the wheels of the rear trolley is too large, the trolley will tip over, causing an accident.

[0004] In order to solve the problems existing in the prior art, it is necessary to design the support block on the trolley into a movable mechanism. When the axle posture changes, the support block can move synchronously to adapt to the change of the axle posture. After the axle posture is restored, the support block can be reset. Summary of the invention

[0005] The utility model aims to provide a sliding support block for a ground drag chain trolley to solve the problem that in the process of conveying a truck axle through the ground drag chain trolley, the posture of the truck axle changes, which causes the posture of the ground drag chain trolley to change, resulting in the trolley tipping over.

[0006] In order to achieve the above objectives, the technical solution of the utility model is:

[0007] A sliding support block for a floor drag chain trolley, the sliding support block comprising a base, the bottom surface of the base is connected to the bottom ends of a third spring and a fourth spring, the top ends of the third spring and the fourth spring are connected to the bottom surface of the support seat, the top surface of the support seat is connected to the bottom surface of the bottom surface, a fixed block is arranged on the surface of the bottom plate, and the support plate is covered on the outside of the fixed block; when the floor drag chain trolley is in an inclined state, the support plate slides along the fixed block, the third spring and the fourth spring are deformed and the bottom plate rotates; when the floor drag chain trolley returns to a horizontal state, the support plate and the bottom plate return to their initial positions.

[0008] Furthermore, the fixed block is a long U-shaped groove, the bottom of the fixed block is fixed on the bottom plate, the U-shaped groove of the fixed block opens upward, the spring guide shaft is installed in the U-shaped groove of the fixed block, and the first spring and the second spring are arranged on the spring guide shaft.

[0009] Furthermore, the support plate includes a top plate and side surfaces on both sides of the top plate, the two side surfaces are covered on the outside of the fixed block, the top plate is located above the U-shaped groove opening of the fixed block, the support plate and the fixed block are gap-matched, and the support plate can slide along the fixed block.

[0010] Furthermore, the support plate is connected to the return block, which is a vertical plate. The top of the return block is connected to the middle of the bottom surface of the top plate, and the bottom end of the return block is located between the two adjacent ends of the first spring and the second spring. The bottom end of the return block is connected to both adjacent ends of the first spring and the second spring, and the bottom end of the return block can move back and forth along the spring guide shaft.

[0011] Furthermore, the support seat is a rectangular parallelepiped, the support seat is under the base plate, the bottom surface of the base plate is connected to the top surface of the support seat, the base can be a rectangular parallelepiped with an internal cavity and an open top, the length of the support seat is smaller than the length of the base, the width of the support seat is smaller than the width of the base, and the length of the base plate is greater than the length of the support seat.

[0012] Furthermore, the support seat is partially located in the internal cavity of the base, and the top surface of the support seat extends out from the opening at the top end of the base and is connected to the bottom surface of the bottom plate.

[0013] Furthermore, the third spring and the fourth spring are located inside the base, and the third spring and the fourth spring are located between the bottom surface of the support seat and the outer surface of the base, the lower surface of the bottom surface of the support seat is connected to the top ends of the third spring and the fourth spring, and the bottom ends of the third spring and the fourth spring are fixed on the upper surface of the bottom surface of the base.

[0014] Furthermore, a pin is arranged on the support seat, the pin passes through the center of the base and the support seat, the pin is perpendicular to the third spring and the fourth spring in space, the support seat is hingedly connected to the pin, and the support seat can rotate around the pin.

[0015] Furthermore, the lower surface of the base bottom plate is installed on the ground drag chain trolley.

[0016] Furthermore, the sliding support block is used to support the vehicle axle, the front axle of the vehicle axle is arranged on the sliding support block of the front vehicle axle, and the rear axle of the vehicle axle is arranged on the sliding support block of the rear vehicle axle.

[0017] The beneficial effects of the utility model are:

[0018] When transporting a truck axle, the front axle of the truck axle is installed on the supporting block of a front drag chain trolley, and the rear axle is installed on the supporting block of a rear drag chain trolley. When the front and rear trolleys are in a horizontal section and the other is in a sloped section, the axle presents a posture with one end high and the other end low. If the supporting block and the trolley are fixedly connected at this time, the rear trolley will be driven by the axle, causing the wheels of the rear trolley to lift up and then overturn. In the utility model, the supporting block includes a bottom plate that can rotate clockwise and counterclockwise. When the trolley is in an inclined state, the bottom plate rotates. The clockwise or counterclockwise rotation of the bottom plate enables the bottom plate to cooperate with the posture change of the truck axle, thereby avoiding the situation where the rear trolley is driven by the axle and the wheels of the rear trolley are lifted up due to the fixed connection between the bottom plate and the trolley when the posture of the axle changes, thereby avoiding the accident of the trolley tipping over due to excessive wheel lifting angle. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the utility model.

[0020] Figure 2 It is a cross-sectional view of the utility model.

[0021] Figure 3 It is a schematic diagram of the utility model.

[0022] Figure 4 It is a schematic diagram of the utility model.

[0023] Figure 5 It is a schematic diagram of the utility model.

[0024] Figure 6 It is a schematic diagram of one of the drag chain trolleys of the utility model in a climbing state.

[0025] Figure 7 It is a schematic diagram of one of the drag chain trolleys of the utility model in a downhill state.

[0026] Among them: sliding support block 1; bottom plate 2; fixed block 3; spring guide shaft 4; first spring 5; second spring 6; support plate 7; top plate 71; side 72; return block 8; support seat 9; base 10; third spring 11; fourth spring 12; pin 13. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described below with reference to the accompanying drawings.

[0028] like Figures 1 to 4 As shown, a sliding support block 1 for a floor drag chain trolley includes a base plate 2, on which a fixed block 3 is arranged, the fixed block 3 is a long U-shaped groove, the bottom of the fixed block 3 is fixed on the base plate 2, the U-shaped groove of the fixed block 3 opens upward, and a spring guide shaft 4 is installed in the U-shaped groove of the fixed block 3 along the length direction of the fixed block.

[0029] Two springs are arranged on the spring guide shaft 4, namely a first spring 5 and a second spring 6. The first spring 5 and the first spring 6 are wound on the spring guide shaft 4, the first spring 5 is located on the left side of the spring guide shaft 4, and the second spring 6 is located on the right side of the spring guide shaft 4.

[0030] The support plate 7 includes a top plate 71 and side surfaces 72 located on both sides of the top plate 71 . The two side surfaces 72 are covered on the outside of the fixed block 3 . The top plate 71 is located above the U-shaped groove opening of the fixed block 3 . The support plate 7 is clearance-matched with the fixed block 3 , and the support plate 7 can slide along the fixed block 3 .

[0031] The return stop block 8 can be a vertical plate, the top end of the return stop block 8 is connected to the middle of the bottom surface of the top plate 71, the bottom end of the return stop block 8 is in contact with the spring guide shaft 4, the bottom end of the return stop block 8 can move back and forth along the spring guide shaft 4, the bottom end of the return stop block 8 is located between the two adjacent ends of the first spring 5 and the second spring 6, the bottom end of the return stop block 8 is connected to both adjacent ends of the first spring 5 and the second spring 6, and in the initial state, the bottom end of the return stop block 8 pre-tightens the first spring 5 and the second spring 6.

[0032] like Figure 5 As shown, the support seat 9 is a rectangular parallelepiped, and the support seat 9 is under the bottom plate 2. The bottom surface of the bottom plate 2 is connected to the top surface of the support seat 9. The base 10 can be a rectangular parallelepiped with an internal cavity and an open top. The length of the support seat 9 is smaller than the length of the base 10, the width of the support seat 9 is smaller than the width of the base 10, and the length of the bottom plate 2 is larger than the length of the support seat 9.

[0033] The support seat 9 is partially located in the internal cavity of the base 10, the top surface of the support seat 9 extends from the opening at the top of the base 10 and is connected to the bottom surface of the bottom plate 2, the third spring 11 and the fourth spring 12 are located in the base 10, and the third spring 11 and the fourth spring 12 are located between the bottom surface of the support seat 9 and the outer surface of the base 10. The lower surface of the bottom surface of the support seat 9 is connected to the top ends of the third spring 11 and the fourth spring 12, and the bottom ends of the third spring 11 and the fourth spring 12 are fixed to the upper surface of the bottom surface of the base 10.

[0034] The base plate 2 is connected to the support seat 9. In order to cooperate with the rotation of the base plate 2, a pin shaft 13 can be set. The pin shaft 13 passes through the center of the base 10 and the support seat 9. The pin shaft is perpendicular to the third spring 11 and the fourth spring 12 in space. The support seat 9 is hingedly connected to the pin shaft 13, and the support seat 9 can rotate around the pin shaft 13.

[0035] The method of using the utility model device is described as follows:

[0036] The sliding support block 1 is installed on the ground drag chain trolley, specifically, the lower surface of the bottom surface of the base 10 is installed on the ground drag chain trolley. When the truck axle is transported, the axle is installed on the top plate 71 of the support plate 7.

[0037] When the trolley is in a horizontal state, the return block 8 is in an initial state, that is, the bottom end of the return block 8 is located in the middle of the spring guide shaft 4, and the top ends of the third spring 11 and the fourth spring 12 are at the same height.

[0038] The front axle of the truck axle 1 is installed on the front truck, and the rear axle is installed on the rear truck. Figure 6 As shown, the front trolley is in a horizontal state, while the rear trolley is in a climbing state, the front axle of the truck axle is high and the rear axle is low, and the bottom plate 2 on the rear trolley is in an inclined state, specifically, the left side of the bottom plate 2 is low and the right side is high. Due to the clearance fit between the support plate 7 and the fixed block 3, under the action of gravity, the support plate 7 moves along the fixed block 3 to the left side, that is, the direction of the first spring 5, driving the return block 8 to move in the direction of the first spring 5. The first spring 5 is compressed by the return block 8. Due to the movement of the support plate 7 to the left, the third spring 11 is compressed and the fourth spring 12 is pulled up, thereby realizing the counterclockwise rotation of the bottom plate 2. The counterclockwise rotation of the bottom plate 2 further lowers the left side of the top plate 71 and raises the right side of the top plate 71. When the front trolley is in a horizontal state, the rear trolley is in a climbing state, and the truck axle presents a posture with the front axle high and the rear axle low, the counterclockwise rotation of the bottom plate 2 enables the bottom plate 2 to match the posture change of the truck axle, avoiding the situation where the rear trolley is driven by the axle when the axle posture changes, and the rear trolley wheels are lifted due to the fixed connection between the bottom plate 2 and the trolley, thereby avoiding the accident of the trolley tipping over due to excessive wheel lifting angle. When the rear trolley completes the climbing section and returns to a horizontal state, the bottom plate 2 is no longer tilted, the first spring 5 is no longer subjected to downward pressure, and the first spring 5 returns to its original state. Under the thrust of the first spring 5, the support plate 7 and the return block 8 move in the direction of the second spring 6, and the support plate 7 and the return block 8 return to the initial state, that is, the bottom end of the return block 8 is located in the middle of the spring guide shaft 4, and the third spring 11 and the fourth spring 12 return to their original state and are at the same height again.

[0039] like Figure 7As shown, the front trolley is in a horizontal state, while the rear trolley is in a downhill state, the front axle of the truck axle is low and the rear axle is high, and the bottom plate 2 on the rear trolley is in an inclined state, specifically, the left side of the bottom plate 2 is high and the right side is low. Due to the clearance fit between the support plate 7 and the fixed block 3, under the action of gravity, the support plate 7 moves along the fixed block 3 to the right side, that is, the direction of the second spring 6, driving the return block 8 to move in the direction of the second spring 6, and the second spring 6 is compressed by the return block 8. Due to the movement of the support plate 7 to the right, the third spring 11 is pulled up and the fourth spring 12 is compressed, thereby realizing the clockwise rotation of the bottom plate 2. The clockwise rotation of the bottom plate 2 further causes the left side of the top plate 71 to rise and the right side of the top plate 71 to fall. When the front trolley is in a horizontal state, the rear trolley is in a downhill state, and the truck axle presents a posture with the front axle low and the rear axle high, the clockwise rotation of the bottom plate 2 enables the bottom plate 2 to match the posture change of the truck axle, avoiding the situation where the rear trolley is driven by the axle when the axle posture changes, and the rear trolley wheels are lifted due to the fixed connection between the bottom plate 2 and the trolley, thereby avoiding the accident of the trolley tipping over due to excessive wheel lifting angle. When the rear trolley completes the downhill section and returns to a horizontal state, the bottom plate 2 is no longer tilted, and the second spring 6 is no longer subjected to downward pressure. The second spring 6 gradually returns to its original state. Under the thrust of the second spring 6, the support plate 7 and the return block 8 move in the direction of the first spring 5, and the support plate 7 and the return block 8 return to the initial state, that is, the bottom end of the return block 8 is located in the middle of the spring guide shaft 4, and the third spring 11 and the fourth spring 12 return to their original state and are at the same height again.

[0040] In the present invention, the support plate 7 and the fixed block 3 are in clearance fit, and the support plate 7 can move back and forth along the fixed block 3. When the front trolley and the rear trolley are both in a horizontal state, a strong friction force is generated on the contact surface between the support plate 7 and the fixed block 3 under the heavy pressure of the workpiece, and the support plate 7 will not slide under normal working conditions, that is, in a horizontal state, and relative sliding will occur only when a pulling force is generated. Figure 6 and Figure 7 In the process, each spring is in a pre-compression state, so that the support plate 7 can stay firmly in the middle position. When the support plate 7 slides, one of the third spring 11 and the fourth spring 12 is compressed and the other spring is pulled up. When the trolley is in a horizontal state, the compressed spring rebounds and the bottom plate 2 automatically returns to the normal position. Figure 1 The S in the figure is the design stroke, which indicates the slidable displacement of the support plate 7. The design stroke S needs to be greater than the maximum stroke in actual working conditions.

[0041] Figure 5 When the trolley moves horizontally, the third spring 11 and the fourth spring 12 are in a compressed state in the initial state, and the spring forces of the two springs are the same, which can stabilize the posture of the base plate 2 in a horizontal state, and the horizontal state is consistent with the beam posture of the axle of the horizontal conveying section.

[0042] Figure 6 and Figure 7 In the embodiment, the maximum rotation angle of the bottom plate 2 is 50°, which is greater than the maximum angle required in actual working conditions. When one of the front and rear carriages is in a horizontal section and the other is in a slope section, Figure 6 , Figure 7 The situation shown in the figure will occur. The trolley adopts the sliding support block of the utility model. The bottom plate 2 can realize angle deflection according to the posture change of the axle, so that the bottom plate 2 automatically adapts to the posture change of the axle, thereby avoiding the situation where the rear trolley is driven by the axle and the wheels of the rear trolley are lifted up due to the fixed connection between the bottom plate 2 and the trolley when the posture of the axle changes, thereby avoiding the accident of the trolley tipping over due to the wheel lifting angle being too large.

[0043] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "left", "right", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

Claims

1. A sliding support block for a floor drag chain trolley, the sliding support block comprising a base (10), characterized in that: The bottom surface of the base (10) is connected to the bottom ends of the third spring (11) and the fourth spring (12); the top ends of the third spring (11) and the fourth spring (12) are connected to the bottom surface of the support seat (9); the top surface of the support seat (9) is connected to the bottom surface of the bottom plate (2); a fixed block (3) is arranged on the surface of the bottom plate (2); the support plate (7) is covered on the outside of the fixed block (3); when the local drag chain trolley is in an inclined state, the support plate (7) slides along the fixed block (3), the third spring (11) and the fourth spring (12) are deformed and the bottom plate (2) rotates; when the local drag chain trolley returns to a horizontal state, the support plate (7) and the bottom plate (2) return to their initial positions.

2. A sliding support block for a floor drag chain trolley according to claim 1, characterized in that: The fixing block (3) is a long U-shaped groove. The bottom of the fixing block (3) is fixed on the bottom plate (2). The U-shaped groove of the fixing block (3) opens upward. The spring guide shaft (4) is installed in the U-shaped groove of the fixing block (3). The spring guide shaft (4) is provided with a first spring (5) and a second spring (6).

3. A sliding support block for a floor drag chain trolley according to claim 1, characterized in that: The support plate (7) comprises a top plate (71) and side surfaces (72) located on both sides of the top plate (71), the two side surfaces (72) are covered on the outside of the fixing block (3), the top plate (71) is located above the U-shaped groove opening of the fixing block (3), the support plate (7) and the fixing block (3) are clearance-matched, and the support plate (7) can slide along the fixing block (3).

4. The sliding support block for a floor drag chain trolley according to claim 1, characterized in that: The support plate (7) is connected to a return stopper (8), which is a vertical plate. The top end of the return stopper (8) is connected to the middle of the bottom surface of the top plate (71), and the bottom end of the return stopper (8) is located between the two adjacent ends of the first spring (5) and the second spring (6). The bottom end of the return stopper (8) is connected to both adjacent ends of the first spring (5) and the second spring (6), and the bottom end of the return stopper (8) can move back and forth along the spring guide shaft (4).

5. The sliding support block for a floor drag chain trolley according to claim 1, characterized in that: The support seat (9) is a rectangular parallelepiped, the support seat (9) is below the bottom plate (2), the bottom surface of the bottom plate (2) is connected to the top surface of the support seat (9), the base (10) is a rectangular parallelepiped with an internal cavity and an open top, the length of the support seat (9) is smaller than the length of the base (10), the width of the support seat (9) is smaller than the width of the base (10), and the length of the bottom plate (2) is larger than the length of the support seat (9).

6. The sliding support block for a floor drag chain trolley according to claim 1, characterized in that: The support seat (9) is partially located in the internal cavity of the base (10), and the top surface of the support seat (9) extends out from the opening at the top end of the base (10) and is connected to the bottom surface of the bottom plate (2).

7. The sliding support block for a floor drag chain trolley according to claim 1, characterized in that: The third spring (11) and the fourth spring (12) are located in the base (10), and the third spring (11) and the fourth spring (12) are located between the bottom surface of the support seat (9) and the outer surface of the base (10), the lower surface of the bottom surface of the support seat (9) is connected to the top ends of the third spring (11) and the fourth spring (12), and the bottom ends of the third spring (11) and the fourth spring (12) are fixed on the upper surface of the bottom surface of the base (10).

8. The sliding support block for a floor drag chain trolley according to claim 1, characterized in that: A pin shaft (13) is arranged on the support seat (9), and the pin shaft (13) passes through the center of the base (10) and the support seat (9). The pin shaft is vertical to the third spring (11) and the fourth spring (12) in space. The support seat (9) is hingedly connected to the pin shaft (13), and the support seat (9) can rotate around the pin shaft (13).

9. The sliding support block for a floor drag chain trolley according to claim 1, characterized in that: The lower surface of the bottom plate of the base (10) is installed on the ground drag chain trolley.

10. The sliding support block for a floor drag chain trolley according to claim 1, characterized in that: The sliding support block is used to support the vehicle axle (1); the front axle of the vehicle axle (1) is arranged on the sliding support block of the front vehicle, and the rear axle of the vehicle axle (1) is arranged on the sliding support block of the rear vehicle.

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