Safety tongs for elevator maintenance

Abstract

The utility model discloses a pair of safety tongs for elevator repair and maintenance, which comprises a shell and a steel cable, the inner walls of both sides of the shell are fixedly connected with guide blocks, one side of each guide block is movably connected with a wedge-shaped block, the wedge-shaped block is contacted with the steel cable, one side of the wedge-shaped block is fixedly connected with a sliding column, the top of the shell is provided with a clamping groove, and the clamping groove is fixedly connected with the sliding column. And a sliding rod is movably connected into the clamping groove, a sliding block is fixedly connected to the bottom end of the sliding rod, two first sliding grooves are formed in the sliding block, the sliding columns are slidably connected with the first sliding grooves, a second sliding groove is formed in the inner wall of one side of the shell, and the second sliding groove is slidably connected with the sliding block. According to the steel cable clamping device, steel cables of different sizes can be stably clamped, operation is more convenient and faster, meanwhile, the wedge-shaped block can be supported in an auxiliary mode through matched use of the clamping sleeve and the fixing rod, and the wedge-shaped block can more smoothly move upwards along the inclined face of the guide block through the rolling column.

Description

Technical Field

[0001] The utility model relates to the technical field of elevator maintenance and repair, in particular to a safety clamp used for elevator maintenance and repair. Background Art

[0002] The elevator safety clamp device is a safety device that stops the car urgently and clamps it on the guide rail when the elevator speed exceeds the limit speed set by the elevator speed limiter or when the suspension rope breaks or loosens.

[0003] With the development of the times, there are more and more high-rise buildings. Elevators, as necessary supporting equipment for high-rise buildings, are frequently used in daily life, so regular maintenance of elevators is particularly important. Traditional safety clamps generally use a combination of washers and nuts with screws to move the wedges inward to tighten the steel cables. Due to the differences in the sizes of steel cables, they can only be controlled by increasing or decreasing the number of washers and nuts, which is more troublesome to use. Summary of the invention

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a safety clamp for elevator maintenance.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A safety clamp for elevator maintenance comprises a shell and a steel cable, wherein the inner walls on both sides of the shell are fixedly connected with guide blocks, one side of the guide block is movably connected with a wedge block, and the wedge block contacts the steel cable, one side of the wedge block is fixedly connected with a sliding column, a slot is provided at the top of the shell, a sliding rod is movably connected in the slot, a slider is fixedly connected at the bottom end of the sliding rod, two first sliding grooves are provided inside the slider, and the sliding column is slidably connected to the first sliding groove, a second sliding groove is provided on the inner wall of one side of the shell, and the second sliding groove is slidably connected to the slider, and a fixing component is provided on the top of the shell.

[0007] As a further solution of the utility model, a fixing rod is fixedly connected to the bottom of the wedge-shaped block, a clamping sleeve is sleeved on the outer side of the steel cable, and the fixing rod is fixed to the clamping sleeve.

[0008] As a further solution of the utility model, a plurality of rolling grooves are provided on both sides of the guide block, a rolling column is movably connected between two corresponding rolling grooves, and the rolling column is in contact with the wedge block.

[0009] As a further solution of the utility model, a plurality of tooth grooves are formed on one side of the wedge block, and the tooth grooves are evenly distributed.

[0010] As a further solution of the utility model, the fixing component includes a rubber ring, the rubber ring is bonded in the slot, and the rubber ring is in contact with the sliding rod.

[0011] As a further solution of the utility model, a rubber pad is fixedly connected to the top of the wedge-shaped block.

[0012] As a further solution of the utility model, the top end of the sliding rod passes through the housing and is fixedly connected with a knob.

[0013] The beneficial effects of the utility model are:

[0014] 1. The utility model can stably clamp steel cables of different sizes through the coordinated use of wedge blocks and guide blocks, making the operation more convenient and improving the flexibility of the device.

[0015] 2. Through the use of the clamping sleeve and the fixing rod, the wedge block is provided with auxiliary support, and the position of the wedge block is further stabilized.

[0016] 3. Through the setting of the rolling column, the rolling column can make the wedge block move upward along the inclined surface of the guide block more smoothly, thereby improving the use effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] FIG1 is a schematic diagram of the front three-dimensional structure of a safety clamp for elevator maintenance proposed by the present invention;

[0018] FIG2 is a partial cross-sectional structural diagram of a safety clamp for elevator maintenance proposed by the present invention;

[0019] FIG3 is a schematic cross-sectional view of a ferrule structure of a safety clamp for elevator maintenance proposed by the present invention;

[0020] Figure 4 The utility model is a schematic diagram of the enlarged structure of part A of a safety clamp for elevator maintenance.

[0021] In the figure: 1. steel cable; 2. shell; 3. rolling groove; 4. guide block; 5. rubber pad; 6. wedge block; 7. tooth groove; 8. first slide groove; 9. slider; 10. sliding column; 11. sliding rod; 12. second slide groove; 13. clamping groove; 14. rubber ring; 15. rolling column; 16. fixing rod; 17. clamping sleeve. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments of the utility model, other embodiments obtained by ordinary technicians in this field without making creative work are all within the scope of protection of the utility model.

[0023] Referring to Figures 1 to 4, a safety clamp for elevator maintenance includes a shell 2 and a steel cable 1. Guide blocks 4 are fixed to the inner walls of both sides of the shell 2 by bolts. A wedge block 6 is slidably connected to one side of the guide block 4. The guide block 4 can guide the wedge block 6 so that it can move stably along a certain trajectory, and the wedge block 6 contacts the steel cable 1. A sliding column 10 is fixed to one side of the wedge block 6 by bolts. A card slot 13 is provided at the top of the shell 2. A sliding rod 11 is slidably connected in the card slot 13. A slider 9 is fixed to the bottom end of the sliding rod 11 by bolts. Two first sliding grooves 8 are provided inside the slider 9, and the sliding column 10 is slidably connected to the first sliding groove 8. A second sliding groove 12 is provided on the inner wall of one side of the shell 2, and the second sliding groove 12 is slidably connected to the slider 9. Pulling the sliding rod 11 upwards drives the slider 9 to move upwards, thereby causing the wedge block 6 to move upwards along the inclined surface of the guide block 4. At the same time, the sliding column 10 moves along the first sliding groove 8 The wedge-shaped block 6 moves upward and moves toward the middle to clamp the steel cable 1. A fixing component is provided on the top of the housing 2.

[0024] In the present invention, it should be noted that a fixing rod 16 is welded to the bottom of the wedge block 6, a clamping sleeve 17 is sleeved on the outer side of the steel cable 1, and the fixing rod 16 is fixed to the clamping sleeve 17. The clamping sleeve 17 and the fixing rod 16 are used in conjunction with each other to provide auxiliary support for the wedge block 6. A plurality of rolling grooves 3 are provided on both sides of the guide block 4, and a rolling column 15 is rotatably connected between two corresponding rolling grooves 3, and the rolling column 15 is in contact with the wedge block 6. The rolling column 15 can enable the wedge block 6 to move upward along the inclined surface of the guide block 4 more smoothly. A plurality of tooth grooves 7 are provided on one side of the wedge block 6, and the tooth grooves 7 are evenly distributed. The tooth grooves 7 can increase the friction between the steel cable 1 and the wedge block 6. The fixing component includes a rubber ring 14, which is bonded to the clamping groove 13, and the rubber ring 14 is in contact with the slide bar 11. The friction between the rubber ring 14 and the slide bar 11 is relatively large, and the wedge block 6 A rubber pad 5 is bonded to the top of the wedge block 6. When the wedge block 6 moves to the top, the rubber pad 5 can protect it to prevent the wedge block 6 from directly contacting the top of the shell 2. The top of the slide rod 11 passes through the shell 2 and is welded with a knob.

[0025] Working principle: When the steel cable 1 needs to be clamped, first place the device on the outside of the steel cable 1 and make the steel cable 1 between the two wedge blocks 6, then pull the slide bar 11 upward to drive the slider 9 to move upward, thereby making the wedge block 6 move upward along the inclined surface of the guide block 4, and at the same time the sliding column 10 moves along the first slide groove 8, thereby making the wedge block 6 move upward and move toward the middle to clamp the steel cable 1, and then clamp the two ferrules 17 on the steel cable 1 accordingly, and fix the two ferrules 17 with bolts.

[0026] In addition, the terms "installation", "setting", "connection" and "socketing" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements or components. Those skilled in the art can understand the specific meanings of the above terms in this application according to specific circumstances.

Claims

1. A safety clamp for elevator maintenance, comprising a housing (2) and a steel cable (1), characterized in that: The inner walls on both sides of the shell (2) are fixedly connected with guide blocks (4), one side of the guide block (4) is movably connected with a wedge block (6), and the wedge block (6) is in contact with the steel cable (1), one side of the wedge block (6) is fixedly connected with a sliding column (10), the top of the shell (2) is provided with a slot (13), a sliding rod (11) is movably connected in the slot (13), the bottom end of the sliding rod (11) is fixedly connected with a sliding block (9), the inside of the sliding block (9) is provided with two first sliding grooves (8), and the sliding column (10) is slidably connected to the first sliding groove (8), the inner wall of one side of the shell (2) is provided with a second sliding groove (12), and the second sliding groove (12) is slidably connected to the sliding block (9), and the top of the shell (2) is provided with a fixing component.

2. A safety clamp for elevator maintenance according to claim 1, characterized in that: A fixing rod (16) is fixedly connected to the bottom of the wedge-shaped block (6), a clamping sleeve (17) is sleeved on the outer side of the steel cable (1), and the fixing rod (16) and the clamping sleeve (17) are fixed to each other.

3. A safety clamp for elevator maintenance according to claim 1, characterized in that: A plurality of rolling grooves (3) are provided on both sides of the guide block (4), and a rolling column (15) is movably connected between two corresponding rolling grooves (3), and the rolling column (15) is in contact with the wedge block (6).

4. A safety clamp for elevator maintenance according to claim 1, characterized in that: A plurality of tooth grooves (7) are formed on one side of the wedge-shaped block (6), and the tooth grooves (7) are evenly distributed.

5. A safety clamp for elevator maintenance according to claim 1, characterized in that: The fixing component comprises a rubber ring (14), the rubber ring (14) is bonded in the clamping groove (13), and the rubber ring (14) is in contact with the sliding rod (11).

6. A safety clamp for elevator maintenance according to claim 1, characterized in that: A rubber pad (5) is fixedly connected to the top of the wedge-shaped block (6).

7. A safety clamp for elevator maintenance according to claim 1, characterized in that: The top end of the sliding rod (11) passes through the housing (2) and is fixedly connected to a knob.

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