Limiting protection structure of lifting frame

Abstract

The utility model discloses a limiting protection structure of a lifting frame, which is characterized by comprising a locking plate movably connected with the lifting frame. The bottom plate is arranged at the bottom of the lifting frame, and a plurality of protrusions playing a role in guiding and limiting the locking plate are arranged on the bottom plate. Through the arrangement of the limiting protection structure, the position of the lifting frame is limited and protected after the lifting frame is lifted, and the situation that the lifting frame suddenly falls down due to failure of an oil cylinder or other reasons, so that a lifted heavy object falls off and is damaged, and even safety accidents occur is avoided.

Description

Technical Field

[0001] This utility model relates to a lifting frame, specifically a limiting and protective structure for a lifting frame. Background Technology

[0002] Currently, there are many types of car lift equipment on the market with varying structures. They are mainly used in automobile manufacturing plants and repair shops. During lifting, the lifter uses a hydraulic cylinder to extend a piston rod, causing the entire lifter to rise. During lowering, the hydraulic cylinder retracts the piston rod, causing the entire lifter to descend and return to its original position. In use, after the lifter has lifted the car, operators can inspect and repair it. However, if the lifter malfunctions during lifting due to a hydraulic cylinder failure or other reasons, causing a sudden drop, the lifted car may fall, resulting in damage or even a safety accident. Therefore, a limiting and protective structure for the lifter is proposed. Utility Model Content

[0003] The purpose of this invention is to provide a limiting and protective structure for a lifting frame in order to solve the above problems.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a limiting and protective structure for a lifting frame, characterized by comprising:

[0005] Locking plate, a locking plate that is movably connected to the lifting frame;

[0006] The base plate is located at the bottom of the lifting frame and has several protrusions that guide and limit the locking plate.

[0007] More preferably, the protrusion has a guide slope on one side and a limiting surface on the other side.

[0008] A further preferred embodiment includes a guide plate disposed on the base plate and a lock plate movably mounted on the lock plate that cooperates with the guide plate to raise the lock plate when the lifting frame is reset, so that the lock plate is higher than the protruding stop block.

[0009] A further preferred embodiment includes a torsion spring mounted on the stop and the locking plate for driving the stop's movement.

[0010] In a further preferred embodiment, the locking plate is also provided with a groove.

[0011] The beneficial effects of this utility model are: by setting up a limiting and protective structure, the position of the lifting frame is limited and protected after it is lifted, so as to avoid the lifting frame from falling and causing damage or even safety accidents due to sudden descent caused by cylinder failure or other reasons. Attached Figure Description

[0012] Appendix Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Appendix Figure 2 This is a schematic diagram of the present invention in use.

[0014] Legend: 1. Locking plate; 2. Base plate; 3. Protrusion; 4. Guide slope; 5. Limiting surface; 6. Guide plate; 7. Stop block; 8. Torsion spring; 9. Groove. Detailed Implementation

[0015] The following description, in conjunction with the accompanying drawings, further illustrates the limiting and protective structure of a lifting frame according to this utility model.

[0016] It should be noted that all directional indicators such as up, down, left, right, front, back, etc. in the embodiments of this utility model are only used to explain the relative positional relationship and movement of the components in a specific posture as shown in the attached figure. If the specific posture changes, the directional indicator will also change accordingly.

[0017] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly; for example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0018] See Figure 1-2 As shown, a limiting and protective structure for a lifting frame is characterized by comprising:

[0019] Locking plate 1, which is movably connected to the lifting frame;

[0020] The base plate 2 is located at the bottom of the lifting frame, and the base plate 2 is provided with a number of protrusions 3 that guide and limit the locking plate 1.

[0021] When in use, a pin can be installed on one end of the locking plate 1, and then the pin can be movably installed on the movable support arm, so that the locking plate and the movable support arm are movably connected.

[0022] By setting up a limit protection structure, the position of the lifting frame is limited after it is lifted, so as to prevent the lifted heavy objects from falling and being damaged or even causing safety accidents due to sudden descent of the lifting frame caused by cylinder failure or other reasons.

[0023] In one embodiment, the protrusion 3 has a guide slope 4 on one side and a limiting surface 5 on the other side. The guide slope 4 guides the movement of the locking plate 1 during the lifting process, allowing it to move along the guide slope 4. The limiting surface 5 prevents the locking plate 1 from falling and fitting against the bottom plate 2 on the lifting frame after it moves to the rear side of the limiting locking plate 1. The limiting surface 5 blocks the forward movement of the locking plate 1, thus preventing the lifting frame from suddenly falling if the lifting frame malfunctions or falls suddenly.

[0024] In one embodiment, it also includes a guide plate 6 disposed on the base plate 2 and a stop block 7 movably mounted on the lock plate 1 and cooperating with the guide plate 6 to raise the lock plate 1 when the lifting frame is reset, so that the lock plate 1 is higher than the protrusion 3.

[0025] It also includes a torsion spring 8 installed on the stop 7 and the locking plate 1 for driving the stop 7 to move;

[0026] The guide plate 6 guides the movement and action of the stop block 7. The torsion spring 8 applies a downward rotational force to the stop block 7. When the stop block 7 is in contact with the guide plate 6 and is blocked by the guide plate 6, the torsion spring 8 applies force to the locking plate 1, causing the locking plate 1 to be pushed downward, so that it can be tightly attached to the bottom plate 2 or the limiting locking plate 1. When the lifting frame descends, the locking plate 1 is pushed upward so that the bottom of the locking plate 1 is higher than the protrusion 3. At this time, the force of the torsion spring 8 and the weight of the stop block 7 drive the stop block 7 to rotate. After the locking plate 1 is lowered, the protrusion of the stop block 7 rests on the guide plate 6, so that the locking plate 1 will not contact the protrusion 3 and obstruct the descent of the lifting frame during the descent.

[0027] In one embodiment, the locking plate 1 is further provided with a groove 9, which prevents the guide plate 6 from interfering with the locking plate 1.

[0028] In use, this invention works as follows: During the lifting process by the hydraulic cylinder, the lifting arm drives the locking plate 1, which is movably connected to the lifting arm, to move on the base plate 2. The locking plate 1 is then pressed against the base plate 2 by the force of the torsion spring 8. As the lifting frame continues to lift, the locking plate 1 continues to move, moving along the guide slope 4 to above the protrusion 3. After moving out of the protrusion 3, the torsion spring 8 pushes the locking plate 1 back into contact with the base plate 2. If the lifting frame suddenly drops due to hydraulic cylinder failure or other reasons, the locking plate 1 abuts against the limiting surface 5 of the protrusion 3, preventing a sudden drop in the lifting frame.

[0029] When the lifting frame needs to be lowered, the operator moves the locking plate 1 upwards, causing one end of the locking plate 1 to lift and disengage from the base plate 2. At the same time, the bottom of the locking plate 1 is higher than the protrusion 3. At this time, the force of the torsion spring 8 and the weight of the stop block 7 drive the stop block 7 to rotate. After the locking plate 1 is lowered, the protrusion of the stop block 7 rests on the guide plate 6. Then, the hydraulic cylinder drives the lifting frame to continue to descend until the lifting frame has been lowered and reset.

[0030] The scope of protection of this utility model is not limited to the above embodiments and their variations. Conventional modifications and substitutions made by those skilled in the art based on the content of these embodiments are all within the scope of protection of this utility model.

Claims

1. A limiting and protective structure for a lifting frame, characterized in that, include: Locking plate (1), which is movably connected to the lifting frame; The base plate (2) is located at the bottom of the lifting frame, and the base plate (2) has several protrusions (3) that guide and limit the locking plate (1).

2. The limiting and protective structure for a lifting frame according to claim 1, characterized in that: The protrusion (3) has a guide slope (4) on one side and a limiting surface (5) on the other side.

3. The limiting and protective structure for a lifting frame according to claim 1, characterized in that: It also includes a guide plate (6) set on the base plate (2) and a stop block (7) that is movably installed on the lock plate (1) and cooperates with the guide plate (6) to raise the lock plate (1) when the lifting frame is reset, so that the lock plate (1) is higher than the protrusion (3).

4. The limiting and protective structure for a lifting frame according to claim 3, characterized in that: It also includes a torsion spring (8) installed on the stop (7) and the lock plate (1) for driving the stop (7) to move.

5. The limiting and protective structure for a lifting frame according to claim 3, characterized in that: The lock plate (1) is also provided with a groove (9).

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