Elevator safety tongs with damping function

Abstract

The invention discloses elevator safety tongs with a damping function, and relates to the field of elevator safety tongs. A built-in driving tong assembly is mounted on the inner side of a reserved body through a hydraulic component in a butt joint manner; an abutting supporting piece is installed on the inner side of the upper end of the built-in driving clamp assembly in a nested mode, a reserved built-in cavity is formed in the inner side of the upper end of the reserved body, and the lower end of the built-in supporting piece corresponds to the upper end of the abutting supporting piece in position. According to the elevator safety tongs with the damping function, self-adaptive positioning treatment is carried out on a contacted elevator rope through an auxiliary pressure relief limiting structure, and pressure relief type damping positioning work is carried out on a built-in driving tongs assembly in cooperation with an inclined supporting structure between an obliquely arranged abutting movable reserved plate and a third spring; direct rigid positioning and locking treatment during locking work in emergency is avoided, pressure relief type damping and positioning work is effectively carried out in the forced locking process, and the phenomenon of high-strength abrasion to the surface of the elevator transmission piece at the contact position is avoided.

Description

Technical Field

[0001] This invention relates to the field of elevator safety clamp technology, specifically to an elevator safety clamp with shock absorption function. Background Technology

[0002] The elevator safety clamp device is a safety device that, under the control of the speed governor, will bring the elevator car to an emergency stop and clamp it on the guide rail when the elevator speed exceeds the speed limit set by the speed governor, or when the suspension rope breaks or slackens. For example, patent CN208531963U discloses a buffer device based on an elevator safety clamp. Its features include: a buffer block, a spring steel plate, and a U-shaped support plate. The buffer block is positioned adjacent to the inclined block of the elevator safety clamp, while the U-shaped support plate is positioned away from the inclined block. The spring steel plate is positioned between the buffer block and the U-shaped support plate, and a buffer zone is provided between the U-shaped support plate and the spring steel plate. This invention replaces the existing buffer springs with the buffer block, spring steel plate, and U-shaped support plate, avoiding the problems of complex structure and cumbersome installation that require installing buffer springs piece by piece. The buffer device of this invention has a simple structure and is easy to replace and disassemble. For example, patent CN214298788U describes an elevator safety clamp, which includes a clamp body and a movable wedge installed within the clamp body. The movable wedge is equipped with a lifting plate, which is used to trigger the elevator's safety switch. This elevator safety clamp, with the lifting plate corresponding to the movable wedge, can trigger the safety switch by linking the lifting plate with a corresponding lifting mechanism when the movable wedge malfunctions, thus ensuring elevator safety. For example, patent CN203682809U discloses a novel elevator safety clamp used for elevator safety braking. The novel elevator safety clamp includes: a safety switch, a control lever, a control lever limiter, and a lifting plate movably connected through a connection hole in the safety clamp. The upper end of the lifting plate has a lifting through hole for connecting a speed governor wire rope. By connecting a lifting plate, the lifting hole can be moved upwards, thereby reducing the required pit depth and solving the problem of elevator installation being impossible due to insufficient pit depth in engineering projects. For example, an elevator safety clamp and elevator assembly are disclosed in CN118850905A. The elevator safety clamp includes a clamp body, a positioning wedge, a sliding wedge, and a magnetic component. The clamp body is used to pass through the guide rail; the positioning wedge is located in the clamp body; the positioning wedge has a first inclined surface; the sliding wedge is slidably connected to the positioning wedge; the magnetic component includes an electromagnet and a magnetic element, the electromagnet is installed in the clamp body; there is a magnetic force between the magnetic element and the electromagnet; the magnetic element is connected to the sliding wedge and drives the sliding wedge to slide under the magnetic force, and electromagnetic triggering is achieved between the electromagnet and the magnetic element; the sliding wedge has a second inclined surface and a clamping surface, the second inclined surface matches the first inclined surface; the clamping surface clamps the guide rail as the sliding wedge slides, so that the sliding wedge brakes the guide rail, thereby the elevator safety clamp clamps the guide rail, realizing the electromagnetic clamping of the elevator safety clamp; Most of the existing technologies mentioned above improve the overall structure. However, when existing elevator safety clamps lock in an emergency, they mostly use direct, rigid positioning and locking. During the forced locking process, they cannot effectively perform pressure relief and shock absorption positioning, which makes the surface of the elevator transmission components at the contact point prone to high-intensity wear, thus limiting their use. Summary of the Invention

[0003] The purpose of this invention is to provide an elevator safety clamp with shock absorption function, in order to solve the problem mentioned in the background art that when locking in an emergency, most of them are directly and rigidly positioned and locked. During the forced locking process, they cannot effectively perform pressure relief and shock absorption positioning, which leads to high-intensity wear on the surface of the elevator transmission components at the contact position, and thus has certain limitations in use.

[0004] To achieve the above objectives, the present invention provides the following technical solution: an elevator safety clamp with shock absorption function, comprising a reserved body, wherein a built-in drive clamp assembly is installed on the inner side of the reserved body via a hydraulic component; an abutment support is nested on the inner side of the upper end of the built-in drive clamp assembly, and a reserved built-in cavity is opened on the inner side of the upper end of the reserved body, and a built-in support is nested on the inner side of the reserved built-in cavity, wherein the lower end of the built-in support corresponds to the upper end of the abutment support; a second spring is fixedly connected to the outer side of the built-in support, and the second spring is connected to the inner side of the reserved body; an auxiliary pressure relief limiting structure is provided between the reserved body and the built-in drive clamp assembly, and the elevator rope in contact is adaptively positioned by the auxiliary pressure relief limiting structure.

[0005] Furthermore, the auxiliary pressure relief limiting structure is provided with an anti-moving movable reserved plate, which is nested and installed inside the reserved internal cavity. The anti-moving movable reserved plate is located inside the reserved internal cavity, and a third spring is fixedly connected to the upper end of the anti-moving movable reserved plate, and the third spring is connected to the inner side of the reserved internal cavity.

[0006] Furthermore, the outer side of the anti-collision movable reserved plate is rotatably connected with a transverse secondary positioning component, and the transverse secondary positioning component is set inside the reserved built-in cavity. A reserved through hole is opened on the upper inner side of the reserved body, and the reserved through hole and the transverse secondary positioning component are connected through to each other.

[0007] Furthermore, the built-in drive clamp assembly forms a vertical sliding structure along the inner side of the reserved body, and the built-in drive clamp assembly, together with the upper abutment support, applies pressure to the contacting built-in support synchronously, and the built-in support forms an elastic sliding structure along the inner side of the reserved body through the second spring.

[0008] Furthermore, during the upward movement of the built-in support, pressure is applied to the contacting movable reserved plate, and the contacting movable reserved plate compresses the inner third spring lateral movable support. The contacting movable reserved plate also pushes the outer lateral secondary positioning component to move laterally along the inner side of the reserved body. The built-in drive clamp assembly will move rapidly upward along the inner side of the reserved body through the preset drive component. The built-in drive clamp assembly will pre-support the contacting movable reserved plate through the upper contact support component, thereby cooperating with the inclined support structure between the inclined contacting movable reserved plate and the third spring to perform pressure relief and shock absorption positioning work for the built-in drive clamp assembly.

[0009] Furthermore, the inner side of the built-in drive clamp assembly is provided with an adaptive auxiliary lateral locking structure, which performs secondary positioning processing on the contacting rope. The adaptive auxiliary lateral locking structure is provided with lateral limiting members, which are nested and connected to the inner side of the built-in drive clamp assembly. The lateral limiting members are symmetrically distributed about the center point of the reserved body, avoiding direct hard positioning and locking processing when locking in an emergency. During the forced locking process, pressure relief and shock absorption positioning work is effectively performed.

[0010] Furthermore, the inner side of the lateral limiting member is connected to a first spring, and the first spring is connected to the inner side of the built-in drive clamp assembly, and the outer side of the lateral limiting member corresponds to the lower end position of the abutment support member.

[0011] Furthermore, during the compression process, the abutting support moves downward along the inner side of the built-in drive clamp assembly, and the lower end of the abutting support pushes the contacting lateral limiting member outward. The ends of the lateral limiting member and the abutting support are inclined, protruding from the original inner position of the reserved body and moving laterally to assist in positioning with the elevator's transmission assembly, thereby increasing the positioning points of the overall built-in drive clamp assembly and improving its limiting strength and support range.

[0012] Furthermore, the lateral limiting member forms an elastic movable structure along the inner side of the built-in drive clamp assembly via a first spring, and the outer side of the lateral limiting member is made of rubber. The inclined lateral limiting member at the contact end is pushed outward, so that it performs secondary positioning on the outer side of the contacting elevator transmission assembly, thereby increasing its force-bearing positioning area and improving its positioning range.

[0013] Compared with the prior art, the beneficial effects of the present invention are: This elevator safety clamp with shock absorption function is equipped with an auxiliary pressure relief and limiting structure. Through the auxiliary pressure relief and limiting structure, the elevator rope in contact is adaptively positioned. During the elevator emergency escape process, the built-in drive clamp assembly will move rapidly upward along the inner side of the reserved body through the preset drive component. The built-in drive clamp assembly will be supported by the upper anti-contact support component in advance against the anti-contact movable reserved plate. In this way, the inclined support structure between the inclined anti-contact movable reserved plate and the third spring will perform pressure relief and shock absorption positioning work for the built-in drive clamp assembly. This avoids direct hard positioning and locking when locking in an emergency. During the forced locking process, pressure relief and shock absorption positioning work is effectively performed, avoiding high-intensity wear on the surface of the elevator transmission components at the contact position, thus improving the practicality of the device. Furthermore, during the synchronous pressure application of the opposing support member to the contacting built-in support member, the synchronously stressed and moving opposing reserved plate will subsequently push the outer lateral secondary positioning member to move laterally along the inner side of the reserved body. This will cause the reserved body to protrude from its original inner position and move laterally to assist in positioning with the elevator's transmission components. This will increase the positioning points of the overall built-in drive clamp assembly, improve its limiting strength and support range, and ensure its support strength. Furthermore, an adaptive auxiliary lateral locking structure is provided. This structure performs secondary positioning of the contacting rope. When the contact support is compressed, it will move downward along the inner side of the built-in drive clamp assembly, thereby pushing the inclined lateral limiting member at the contacting end outward. This allows the rope to perform secondary positioning on the outer side of the contacting elevator transmission component, thereby increasing its force-bearing positioning area and improving its positioning range, ensuring its limiting stability and safety. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the three-dimensional structure of the main body of the present invention; Figure 3 This is a half-section three-dimensional structural diagram of the built-in drive clamp assembly of the present invention; Figure 4 For the present invention Figure 3 A magnified schematic diagram of the central part of the structure; Figure 5 This is a schematic diagram of the three-dimensional structure of the second spring of the present invention; Figure 6 This is a half-section three-dimensional structural diagram of the lateral limiting component of the present invention; Figure 7 This is a schematic diagram of the three-dimensional structure of the contact support member of the present invention in half section. Figure 8 This is a three-dimensional structural diagram of the built-in drive clamp assembly of the present invention.

[0015] In the diagram: 1. Reserved main body; 2. Built-in drive clamp assembly; 3. Abutting support; 4. First spring; 5. Lateral limiting component; 6. Built-in support; 7. Second spring; 8. Reserved built-in cavity; 9. Abutting movable reserved plate; 10. Third spring; 11. Lateral secondary positioning component; 12. Reserved through hole. Detailed Implementation

[0016] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0017] Example 1: Please refer to Figures 1-8 The present invention provides the following technical solution: an elevator safety clamp with shock absorption function, wherein a built-in drive clamp assembly 2 is installed on the inner side of a pre-reserved body 1 via a hydraulic component; an abutment support 3 is nested on the inner side of the upper end of the built-in drive clamp assembly 2, and a pre-reserved built-in cavity 8 is opened on the inner side of the upper end of the pre-reserved body 1, and a built-in support 6 is nested on the inner side of the pre-reserved built-in cavity 8, wherein the lower end of the built-in support 6 corresponds to the upper end of the abutment support 3, and a second spring 7 is fixedly connected to the outer side of the built-in support 6, and the second spring 7 is connected to the inner side of the pre-reserved body 1; an auxiliary pressure relief limiting structure is provided between the pre-reserved body 1 and the built-in drive clamp assembly 2, and the elevator rope in contact is adaptively positioned by the auxiliary pressure relief limiting structure.

[0018] The auxiliary pressure relief limiting structure is equipped with a retaining plate 9, which is nested inside the reserved internal cavity 8. A third spring 10 is fixedly connected to the upper end of the retaining plate 9, and the third spring 10 is mated with the inner side of the reserved internal cavity 8. A transverse secondary positioning member 11 is rotatably connected to the outer side of the retaining plate 9, and the transverse secondary positioning member 11 is located inside the reserved internal cavity 8. A reserved through hole 12 is opened on the inner side of the upper end of the reserved body 1, and the reserved through hole 12 is mated with the transverse secondary positioning member 11. The built-in drive clamp assembly 2 forms a vertical sliding structure along the inner side of the reserved body 1, and the built-in drive clamp assembly 2, in conjunction with the upper retaining support member 3, synchronously applies pressure to the contacting built-in support member 6. The built-in support member 6 forms an elastic sliding structure along the inner side of the reserved body 1 via a second spring 7. During the upward movement of the built-in support 6, pressure is applied to the contacting movable reserved plate 9, and the contacting movable reserved plate 9 compresses the inner third spring 10 for lateral movement support. Furthermore, the contacting movable reserved plate 9 pushes the outer lateral secondary positioning member 11 to move laterally along the inner side of the reserved body 1. During the elevator emergency escape process, the built-in drive clamp assembly 2 will move rapidly upward along the inner side of the reserved body 1 via a preset drive component. The built-in drive clamp assembly 2 will pre-support the contacting movable reserved plate 9 with the upper contact support 3, thereby cooperating with the inclined support structure between the inclined contacting movable reserved plate 9 and the third spring 10 to release pressure on the built-in drive clamp assembly 2. The shock absorption and positioning work avoids direct and rigid positioning and locking during emergency locking operations. It effectively performs pressure relief and shock absorption positioning during the forced locking process, avoiding high-intensity wear on the surface of the elevator transmission components at the contact point. During the synchronous pressure application of the contact support 3 to the contact built-in support 6, the synchronously stressed and moving contact reserved plate 9 will push the outer lateral secondary positioning component 11 to move laterally along the inner side of the reserved body 1, thereby protruding from the original inner position of the reserved body 1 and moving laterally to assist in the positioning work with the elevator transmission components. This increases the positioning points of the overall built-in drive clamp assembly 2, improving its limiting strength and support range.

[0019] Example 2: Based on Example 1, an adaptive assisted lateral locking structure is also disclosed, the specific structure of which is as follows: An adaptive auxiliary lateral locking structure is provided on the inner side of the built-in drive clamp assembly 2, which performs secondary positioning processing on the contacting rope through the adaptive auxiliary lateral locking structure. The adaptive assisted lateral locking structure is provided with a lateral limiting member 5, which is nested and connected to the inner side of the built-in drive clamp assembly 2, and the lateral limiting member 5 is symmetrically distributed about the center point of the reserved body 1. The inner side of the lateral limiting member 5 is connected to a first spring 4, and the first spring 4 is connected to the inner side of the built-in drive clamp assembly 2. The outer side of the lateral limiting member 5 corresponds to the lower end position of the contact support member 3. During the compression process, the contact support member 3 moves downward along the inner side of the built-in drive clamp assembly 2, and the lower end of the contact support member 3 pushes the contacting lateral limiting member 5 outward. The ends of the lateral limiting member 5 and the contact support member 3 are inclined. The lateral limiting member 5 forms an elastic movable structure along the inner side of the built-in drive clamp assembly 2 via the first spring 4, and the outer side of the lateral limiting member 5 is made of rubber. During the process of being pressed against the support member 3, it will move downward along the inner side of the built-in drive clamp assembly 2, thereby pushing the inclined lateral limiting member 5 at the contact end outward, so that it performs secondary positioning on the outer side of the contacting elevator transmission assembly, thereby increasing its force-bearing positioning area and improving its positioning range, ensuring its limiting stability and safety. In conjunction with the lateral positioning structure between the lateral secondary positioning members 11, the built-in drive clamp assembly 2 and the lateral limiting member 5 perform auxiliary positioning processing simultaneously, thereby ensuring the stability and strength support during the emergency limiting process and preventing slippage.

[0020] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0021] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An elevator safety clamp with shock absorption function, comprising a reserved body (1), wherein a built-in drive clamp assembly (2) is installed on the inner side of the reserved body (1) by means of a hydraulic component. Its features are: The upper inner side of the built-in drive clamp assembly (2) is nested with a contact support (3), and the upper inner side of the reserved body (1) is provided with a reserved built-in cavity (8), and the inner side of the reserved built-in cavity (8) is nested with a built-in support (6). The lower end of the built-in support (6) corresponds to the upper end of the contact support (3). The outer side of the built-in support (6) is fixedly connected with a second spring (7), and the second spring (7) is connected to the inner side of the reserved body (1). An auxiliary pressure relief limiting structure is provided between the reserved body (1) and the built-in drive clamp assembly (2). The elevator rope in contact is adaptively positioned by the auxiliary pressure relief limiting structure.

2. The elevator safety clamp with shock absorption function according to claim 1, characterized in that: The auxiliary pressure relief limiting structure is provided with a retaining plate (9), and the retaining plate (9) is nested and installed inside the reserved internal cavity (8). The retaining plate (9) is located inside the reserved internal cavity (8), and a third spring (10) is fixedly connected to the upper end of the retaining plate (9). The third spring (10) is connected to the inner side of the reserved internal cavity (8).

3. The elevator safety clamp with shock absorption function according to claim 2, characterized in that: The outer side of the anti-moving reserved plate (9) is rotatably connected to a transverse secondary positioning component (11), and the transverse secondary positioning component (11) is set inside the reserved built-in cavity (8). A reserved through hole (12) is opened on the upper inner side of the reserved body (1), and the reserved through hole (12) and the transverse secondary positioning component (11) are connected through to each other.

4. The elevator safety clamp with shock absorption function according to claim 3, characterized in that: The built-in drive clamp assembly (2) forms a vertical sliding structure along the inner side of the reserved body (1), and the built-in drive clamp assembly (2) works with the upper abutment support (3) to apply pressure to the contacting built-in support (6) synchronously, and the built-in support (6) forms an elastic sliding structure along the inner side of the reserved body (1) through the second spring (7).

5. An elevator safety clamp with shock absorption function according to claim 4, characterized in that: As the built-in support (6) moves upward, it applies pressure to the contacting movable reserved plate (9), and the contacting movable reserved plate (9) compresses the inner third spring (10) for lateral movement support, and the contacting movable reserved plate (9) pushes the outer lateral secondary positioning member (11) to move laterally along the inner side of the reserved body (1).

6. The elevator safety clamp with shock absorption function according to claim 3, characterized in that: The inner side of the built-in drive clamp assembly (2) is provided with an adaptive auxiliary lateral locking structure, which performs secondary positioning processing on the contacting rope through the adaptive auxiliary lateral locking structure. The adaptive auxiliary lateral locking structure is provided with a lateral limiting member (5), and the lateral limiting member (5) is nested and docked inside the built-in drive clamp assembly (2), and the lateral limiting member (5) is symmetrically distributed about the center point of the reserved body (1).

7. An elevator safety clamp with shock absorption function according to claim 6, characterized in that: The inner side of the lateral limiting member (5) is connected to the first spring (4), and the first spring (4) is connected to the inner side of the built-in drive clamp assembly (2), and the outer side of the lateral limiting member (5) corresponds to the lower end position of the abutting support member (3).

8. An elevator safety clamp with shock absorption function according to claim 7, characterized in that: During the process of being pressed, the abutting support (3) moves downward along the inner side of the built-in drive clamp assembly (2), and the lower end of the abutting support (3) pushes the contacting transverse limiting member (5) outward, and the transverse limiting member (5) and the end side of the abutting support (3) are inclined.

9. An elevator safety clamp with shock absorption function according to claim 8, characterized in that: The lateral limiting member (5) forms an elastic movable structure along the inner side of the built-in drive clamp assembly (2) via the first spring (4), and the outer side of the lateral limiting member (5) is made of rubber.

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