A self-unlocking locking device for a scissor lift

Abstract

The present invention discloses a self-unlocking locking device for a scissor lift, comprising: a second longitudinal limit connecting plate, a rigid horizontal support bottom plate fixedly connected to the left and right side walls of the second longitudinal limit connecting plate, a support plate fixedly connected to the upper surface of the second longitudinal limit connecting plate, a first electric telescopic rod fixedly connected to the left and right side walls of the support plate, a support sheet fixedly connected to the output end of the first electric telescopic rod, and a rotating rod rotatably connected to the support sheet through a rotating shaft; the first longitudinal limit connecting plate fixedly connected to the side of the rigid horizontal support bottom plate away from the second longitudinal limit connecting plate. Through the above structure, when the lift is limited, it can be released automatically, and under the action of gravity and elasticity, the device remains locked in a normal state, and can be limited by bolts to avoid misoperation by personnel.

Description

Technical Field

[0001] The invention relates to the technical field of locking devices for lifts, and in particular to a self-unlocking locking device for a scissor lift. Background Art

[0002] At present, scissor lifts are automobile repair machines used in the automobile maintenance industry. They are driven by a hydraulic system to lift and lower, also known as hydraulic lifts. They play a vital role in automobile repair and maintenance, as well as other positions that require vertical changes in height. When there are heavy objects on the lift, if the locking device is not used, it may be dangerous and cause harm to people on the upper and lower sides of the lift. Summary of the invention

[0003] The object of the present invention is to solve at least one of the technical problems existing in the prior art and to provide a self-unlocking locking device for a scissor lift, which can release itself when the lift is limited. Under the action of gravity and elasticity, the device remains locked in a normal state and can be limited by bolts to avoid misoperation by personnel.

[0004] The present invention also provides a locking device for a scissor lift that can be unlocked by itself, a locking device for a scissor lift that can be unlocked by itself, comprising:

[0005] A second longitudinal limit connecting plate, the left and right side walls of the second longitudinal limit connecting plate are fixedly connected with a rigid horizontal support bottom plate, the upper surface of the second longitudinal limit connecting plate is fixedly connected with a support plate, the left and right side walls of the support plate are fixedly connected with a first electric telescopic rod, the output end of the first electric telescopic rod is fixedly connected with a support sheet, and the support sheet is rotatably connected with a rotating rod through a rotating shaft;

[0006] The rigid horizontal support base plate is fixedly connected to the first longitudinal limit connecting plate on one side away from the second longitudinal limit connecting plate, the upper surface of the first longitudinal limit connecting plate is fixedly connected to the second electric telescopic rod, the upper surface of the first longitudinal limit connecting plate is fixedly connected to a spring, the end of the spring away from the first longitudinal limit connecting plate is fixedly connected to a fixing rod, the right surface of the fixing rod is fixedly connected to a high-hardness horizontal limit plate, the lower surface of the high-hardness horizontal limit plate is provided with a groove, and the upper surface of the fixing rod is threadedly connected to a bolt.

[0007] To achieve the above-mentioned purpose, a self-unlocking locking device for a scissor lift is provided, wherein the number of the first electric telescopic rods is two and they are distributed on the left and right, the rotating rods are distributed on the left and right, and the two rotating rods are rotatably connected by a hinge for adjusting the height.

[0008] In order to achieve the above-mentioned purpose, a self-unlocking locking device for a scissor lift is provided, wherein the cross-section of the rigid horizontal support base plate is L-shaped, which is used to increase the bending resistance of the rigid horizontal support base plate, and the rear inner wall of the rigid horizontal support base plate is provided with a slide groove, and the rear surface of the support plate is provided with a limit rod, which is slidably connected to the slide groove to prevent the first electric telescopic rod from causing large bending.

[0009] To achieve the above-mentioned purpose, a self-unlocking locking device for a scissor lift is provided, wherein rollers are arranged at the bottom of the rigid horizontal support base plate for moving the device, and the number of the first longitudinal limiting connecting plates is two and distributed on the left and right.

[0010] To achieve the above-mentioned purpose, a self-unlocking locking device for a scissor lift is provided, wherein the high-hardness horizontal limit plate is slidably connected to the rigid horizontal support base plate, the support plate is fixedly connected to a limit plate on one side close to the high-hardness horizontal limit plate, and the limit plate is used in conjunction with the groove.

[0011] To achieve the above purpose, a self-unlocking locking device for a scissor lift is provided, wherein the output end of the second electric telescopic rod contacts the lower surface of the fixed rod, and the number of the grooves is multiple and distributed left and right.

[0012] In order to achieve the above-mentioned purpose, a self-unlocking locking device for a scissor lift is provided, wherein the upper surface of the first longitudinal limiting connecting plate is provided with a threaded hole, and the position of the threaded hole corresponds to the position of the bolt.

[0013] In order to achieve the above-mentioned object, a self-unlocking locking device for a scissor lift is provided, wherein the first electric telescopic rod and the second electric telescopic rod are connected to an external power supply.

[0014] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention is further described below in conjunction with the accompanying drawings and embodiments;

[0016] Figure 1 It is a diagram of the internal structure of a self-unlocking locking device of a scissor lift of the present invention;

[0017] Figure 2 for Figure 1 A schematic diagram of the structure enlargement in the middle;

[0018] Figure 3 A top view of a self-unlocking locking device for a scissor lift according to the present invention;

[0019] Figure 4 for Figure 3A magnified schematic diagram of the structure at B in the middle;

[0020] Figure 5 The present invention is a partial structural schematic diagram of a self-unlocking locking device for a scissor lift.

[0021] Legend:

[0022] 1. Rigid horizontal support base plate; 2. First longitudinal limit connecting plate; 3. Second longitudinal limit connecting plate; 4. Support plate; 5. First electric telescopic rod; 6. Support plate; 7. Slide groove; 8. Rotating rod; 9. Hinge; 10. Limiting plate; 11. Roller; 12. Rotating shaft; 13. High-hardness horizontal limit plate; 14. Groove; 15. Second electric telescopic rod; 16. Spring; 17. Fixing rod; 18. Bolt; 19. Threaded hole. DETAILED DESCRIPTION

[0023] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0024] Reference Figure 1-5 , an embodiment of the present invention provides a self-unlocking locking device for a scissor lift, comprising:

[0025] A second longitudinal limit connecting plate 3, the left and right side walls of the second longitudinal limit connecting plate 3 are fixedly connected with a rigid horizontal support bottom plate 1, the upper surface of the second longitudinal limit connecting plate 3 is fixedly connected with a support plate 4, the left and right side walls of the support plate 4 are fixedly connected with a first electric telescopic rod 5, the output end of the first electric telescopic rod 5 is fixedly connected with a support sheet 6, and the support sheet 6 is rotatably connected with a rotating rod 8 through a rotating shaft 12;

[0026] The rigid horizontal support base plate 1 is fixedly connected to the first longitudinal limit connecting plate 2 on one side away from the second longitudinal limit connecting plate 3. The upper surface of the first longitudinal limit connecting plate 2 is fixedly connected to the second electric telescopic rod 15 for automatically releasing the restriction. The upper surface of the first longitudinal limit connecting plate 2 is fixedly connected to a spring 16 for pulling the high-hardness horizontal limit plate 13 downward. The end of the spring 16 away from the first longitudinal limit connecting plate 2 is fixedly connected to a fixing rod 17. The right surface of the fixing rod 17 is fixedly connected to the high-hardness horizontal limit plate 13. The lower surface of the high-hardness horizontal limit plate 13 is provided with a groove 14, and the upper surface of the fixing rod 17 is threadedly connected with a bolt 18.

[0027] The number of the first electric telescopic rods 5 is two and they are distributed on the left and right, the rotating rods 8 are distributed on the left and right, and the two rotating rods 8 are rotatably connected by a hinge 9 for adjusting the height. The cross-section of the rigid horizontal support base plate 1 is L-shaped, which is used to increase the bending resistance of the rigid horizontal support base plate 1. A slide groove 7 is provided on the rear inner wall of the rigid horizontal support base plate 1, and a limit rod is provided on the rear surface of the support sheet 6. The limit rod is slidably connected with the slide groove 7 to prevent the first electric telescopic rod 5 from being bent too much. A roller 11 is provided at the bottom of the rigid horizontal support base plate 1 for moving the device. The number of the first longitudinal limit connecting plates 2 is two and Distributed left and right, the high-hardness horizontal limit plate 13 is slidably connected to the rigid horizontal support base plate 1, the support plate 6 is fixedly connected to the limit plate 10 on one side close to the high-hardness horizontal limit plate 13, and the limit plate 10 is used in conjunction with the groove 14, the output end of the second electric telescopic rod 15 is in contact with the lower surface of the fixed rod 17, the number of the grooves 14 is multiple and distributed left and right, the upper surface of the first longitudinal limit connecting plate 2 is provided with a threaded hole 19, the position of the threaded hole 19 corresponds to the position of the bolt 18, the first electric telescopic rod 5 and the second electric telescopic rod 15 are connected to an external power supply for adjusting the angle of the rotating rod 8.

[0028] Working principle: when it is necessary to raise the rotating rod 8, shorten the second electric telescopic rod 15. After the second electric telescopic rod 15 is shortened, under the tension of the spring 16 and the gravity of the high-hardness horizontal limit plate 13, the groove 14 is connected with the limit plate 10. As the first electric telescopic rod 5 is extended, the high-hardness horizontal limit plate 13 reciprocates up and down, and is in a locked position when it is on the lower side. When the restriction needs to be released, the second electric telescopic rod 15 can be extended. When complete limitation is required, connect the bolts 18 on both sides with the threaded holes 19 to prevent the device from changing in height under any circumstances.

[0029] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A self-unlocking locking device for a scissor lift, characterized in that: include: A second longitudinal limit connecting plate (3), the left and right side walls of the second longitudinal limit connecting plate (3) are fixedly connected to a rigid horizontal support bottom plate (1), the upper surface of the second longitudinal limit connecting plate (3) is fixedly connected to a support plate (4), the left and right side walls of the support plate (4) are fixedly connected to a first electric telescopic rod (5), the output end of the first electric telescopic rod (5) is fixedly connected to a support sheet (6), and the support sheet (6) is rotatably connected to a rotating rod (8) via a rotating shaft (12); The side of the rigid horizontal support base plate (1) away from the second longitudinal limit connecting plate (3) is fixedly connected to the first longitudinal limit connecting plate (2); the upper surface of the first longitudinal limit connecting plate (2) is fixedly connected to the second electric telescopic rod (15); the upper surface of the first longitudinal limit connecting plate (2) is fixedly connected to a spring (16); the end of the spring (16) away from the first longitudinal limit connecting plate (2) is fixedly connected to a fixing rod (17); the right surface of the fixing rod (17) is fixedly connected to a high-hardness horizontal limit plate (13); the lower surface of the high-hardness horizontal limit plate (13) is provided with a groove (14); the upper surface of the fixing rod (17) is threadedly connected to a bolt (18).

2. A self-unlocking locking device for a scissor lift according to claim 1, characterized in that: The number of the first electric telescopic rods (5) is two and they are distributed on the left and right. The rotating rods (8) are distributed on the left and right. The two rotating rods (8) are rotatably connected via a hinge (9).

3. A self-unlocking locking device for a scissor lift according to claim 1, characterized in that: The cross section of the rigid horizontal support base plate (1) is L-shaped, a slide groove (7) is provided on the rear inner wall of the rigid horizontal support base plate (1), a limit rod is provided on the rear surface of the support plate (6), and the limit rod is slidably connected to the slide groove (7).

4. A self-unlocking locking device for a scissor lift according to claim 1, characterized in that: A roller (11) is provided at the bottom of the rigid horizontal support base plate (1), and the number of the first longitudinal limiting connecting plates (2) is two and they are distributed on the left and right.

5. A self-unlocking locking device for a scissor lift according to claim 1, characterized in that: The high-hardness horizontal limit plate (13) is slidably connected to the rigid horizontal support base plate (1), and the support plate (6) is fixedly connected to a limit plate (10) on one side close to the high-hardness horizontal limit plate (13), and the limit plate (10) is used in conjunction with the groove (14).

6. A self-unlocking locking device for a scissor lift according to claim 1, characterized in that: The output end of the second electric telescopic rod (15) contacts the lower surface of the fixed rod (17), and the grooves (14) are multiple and distributed left and right.

7. A self-unlocking locking device for a scissor lift according to claim 1, characterized in that: A threaded hole (19) is provided on the upper surface of the first longitudinal limiting connecting plate (2), and the position of the threaded hole (19) corresponds to the position of the bolt (18).

8. A self-unlocking locking device for a scissor lift according to claim 1, characterized in that: The first electric telescopic rod (5) and the second electric telescopic rod (15) are connected to an external power source.

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