Double-insurance falling protector

Abstract

The utility model relates to the field of falling protectors, in particular to a double-safety falling protector which comprises a shell, a shell cavity and calipers, a T-shaped guide rail can be inserted into the shell cavity, the calipers are symmetrically arranged on the two sides of the shell, the inner ends of the calipers penetrate into the side shell wall of the shell, are arranged opposite to the side end face of the guide rail and can abut against the side end face, and the shell cavity is provided with the calipers. And the calipers are hinged in the shell cavity. The calipers are symmetrically arranged on the two sides of the shell, so that double brakes on the two sides of the guide rail are achieved for double insurance, the two brakes are located on different guide rail faces, the double calipers are used for double braking, braking is conducted on the different guide rail faces, safe double braking at different positions in the true sense is achieved, and safety and guarantee are achieved in the using process; even if the calipers on one side fail or the guide rails on the side are greasy dirt or uneven, the calipers on the other side can play a certain role in braking and buffering, and when the calipers on the two sides brake at the same time, braking is more efficient and stable.

Description

Technical Field

[0001] The invention relates to the field of fall arresters, in particular to a double-safety fall arrester. Background Art

[0002] A fall arrester is a protective device used to keep workers safely suspended in the air after falling while climbing, moving, or working on towers. Currently, many power transmission and transformation towers and communication towers are equipped with fall arresters. When workers climb ladders or equipment structures to perform work, they install the fall arrester on the guide rail and connect it to the safety rope before climbing. Once the construction workers lose balance, their weight can quickly lock the fall arrester on the guide rail to achieve a braking effect to avoid accidents.

[0003] However, existing fall arresters have many inconveniences. For example, they may get stuck even when they are connected to the guide rail. For example, the strength of a single pull arm is limited, and the pull arm may break or become locked and lose its locking effect. For example, the high-altitude fall arrester disclosed in application number "201721003641.8" includes a shell, a T-shaped cavity is formed inside the shell, a locking pin is provided in the middle of the front of the shell, both ends of the locking pin are fixed to the shell, and a card is hingedly connected to the middle of the locking pin. The part of the card that extends out of the shell forms a first card part, and the part of the card that extends into the interior of the shell forms a second card part. The second card part and the locking pin form an eccentric wheel mechanism, and pulleys are also provided on the front and side of the shell. The structure of this fall arrester is the same as the single pull arm or card structure commonly found on the market. Although the description solves the problem of material oxidation, the overall structure does not solve the problems of the prior art discovered by the applicant. Summary of the Invention

[0004] The purpose of the present invention is to solve the above problems and to propose a double insurance fall arrester.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A double-safety fall arrester comprises a shell, a shell cavity and a caliper. The shell cavity can be used for inserting a T-shaped guide rail. At least one caliper is symmetrically provided on both sides of the shell. The inner end of the caliper penetrates the side shell wall of the shell and is arranged opposite to the side end face of the guide rail and can be tightened against the side end face. The caliper is hinged in the shell cavity.

[0007] Preferably, the shell cavity includes a front shell wall, a side shell wall and a rear shell wall symmetrically arranged on both sides of the guide rail, the side shell wall is connected between the front shell wall and the rear shell wall, the guide rail includes a support rail and a guide rail, the support rail extends into the shell cavity through the gap between the two rear shell walls, a through groove is opened on the side shell wall, and the caliper is inserted into the through groove.

[0008] Preferably, guide wheels are provided on both sides of the guide rail in the shell cavity.

[0009] Preferably, at least two guide wheels are provided on each side of the guide bar, and the guide wheels located on the same side of the guide bar are respectively arranged on both sides of the caliper.

[0010] Preferably, the inner sides of the front shell wall and the rear shell wall are respectively provided with straight-line axle holes, and the length direction of the straight-line axle holes is perpendicular to the length direction of the guide rail. The two ends of the axle of the guide wheel are respectively provided in the straight-line axle holes of the front shell wall and the rear shell wall. The straight-line axle holes are through holes or blind holes, and the side shell wall is detachably connected to the front shell wall and / or the rear shell wall.

[0011] Preferably, a wheel seat and an elastic component are further provided in the shell cavity, the wheel seat is located on the outside of the guide wheel, the elastic component is located on the outside of the wheel seat, an open shaft groove is provided on the wheel seat corresponding to the wheel axle, both ends of the wheel axle are provided in the shaft groove, and the elastic component is pressed against the wheel seat to indirectly push the guide wheel toward the guide rail.

[0012] Preferably, the wheel seat includes a load-bearing plate located on the outside of the guide wheel and an axle seat plate located at both ends of the guide wheel. The load-bearing plate and the axle seat plate are connected. The guide wheel extends out of the wheel seat at least toward one side of the guide rail, and the elastic component rests on the outer surface of the load-bearing plate.

[0013] Preferably, the elastic component is an arc-shaped spring piece, the arc opening of the spring piece faces the wheel seat, a guide groove is provided on the circumferential surface of the guide wheel, and the side end of the guide rail extends into the guide groove to cooperate with the guide wheel.

[0014] Preferably, a top screw penetrating the side shell wall is connected between the spring piece and the side shell wall and is used to adjust the pressure of the spring piece against the wheel seat.

[0015] Preferably, the caliper includes a caliper arm and a caliper head, the caliper head includes a first brake position and one or more safety brake positions arranged in sequence, the distance from the first brake position to the axis center of the caliper's hinge axis is smaller than the distance from the safety brake position closest to the first brake position to the axis center of the caliper's hinge axis, and when there are multiple safety brake positions, the distance from the safety brake positions arranged in sequence along the outer surface of the caliper head starting from the first brake position to the axis center of the caliper's hinge axis gradually increases.

[0016] Preferably, brake plates are vertically provided at both side ends of the guide rail, and the brake plates can be embedded in the wheel groove of the guide wheel and cooperate with the guide wheel, and the width of the brake plates is greater than the thickness of the guide rail.

[0017] Beneficial effects:

[0018] 1. The present application adopts the method of symmetrically arranging calipers on both sides of the shell, thereby realizing double brakes on both sides of the guide rail for double insurance, so that the two double brakes are on different guide rail surfaces, and the double calipers perform double braking and brake on different guide rail surfaces, thereby realizing truly safe double brakes in different positions, which is safer and more secure when used. Even if the caliper on one side fails or there is a problem on the guide rail on that side, such as oil stains or unevenness, the caliper on the other side can also play a certain braking buffering role, and when the calipers on both sides brake at the same time, the braking is more efficient and smooth.

[0019] 2. The calipers of the present application are arranged on both sides of the fall arrester. This also has the advantage that workers are less likely to press against the calipers when working at height. The calipers of the present application are located on both sides of the fall arrester, thus avoiding the problem of traditional brake parts being arranged toward the worker's body. This provides convenience for the worker when using the fall arrester. Even if the worker presses on the fall arrester, the rope tied to the body can still be used to drive the outer end of the fall arrester to rotate upward during the upward movement, thereby releasing the calipers from the guide rail. As long as the pressure on the fall arrester is not too great during the upward movement, the fall arrester can be driven to move directly upward without the need to deliberately loosen the fall arrester. The outer surface of the fall arrester is also flat, making it less likely to get caught on the worker's clothing or other workpieces, nor to hit the worker. Using the fall arrester of the present application is safer, smoother, and more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the internal structure of this application;

[0021] Figure 2 This is a schematic diagram of the overall structure of this application in conjunction with the guide rail;

[0022] Figure 3 This is a schematic diagram of the local structure of this application Figure 1 ;

[0023] Figure 4 This is a schematic diagram of the local structure of this application Figure 2 ;

[0024] Figure 5 It is a schematic diagram of the structure of the present application with a guide rod;

[0025] Figure 6 It is a schematic diagram of the structure of this application with a brake plate. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be described in further detail below. The present invention will be further described below with reference to the accompanying drawings.

[0027] Example 1:

[0028] A double-safety fall arrester comprises a shell 1, a shell cavity 2, and a caliper 3. The shell cavity is adapted to accommodate a T-shaped guide rail 4. At least one caliper is symmetrically provided on either side of the shell. The inner end of the caliper penetrates the side wall 12 of the shell and is positioned opposite the side end face of the guide rail and can be pressed against the side end face. The caliper is hingedly connected to the shell cavity. The shell cavity comprises a front shell wall 11, side shell walls 12, and a rear shell wall 13 symmetrically arranged on either side of the guide rail. The side shell walls are connected between the front shell wall and the rear shell wall. The guide rail comprises a support rail 41 and a guide rail 42. The support rail extends into the shell cavity through the gap between the two rear shell walls. The side shell walls are provided with a through slot 121, into which the caliper is inserted. The caliper is hingedly connected to the shell cavity, and the outer caliper arm 31 is positioned downward when in use. The caliper head 32 located in the shell cavity can abut against the guide rail when the caliper rotates, creating a braking effect. A ring 33 is provided on the outside of the clamp arm, which can be used to connect a rope or other connecting piece attached to the worker. When the worker climbs up, the clamp automatically rotates upward to release the guide rail, so that the worker can automatically move the fall arrester upward along the guide rail when climbing up. When the worker climbs down, the clamp rotates downward to achieve a braking effect, and the worker can manually release the clamp to move the fall arrester downward.

[0029] Most of the existing fall arresters are single-brake structures. Even those with dual-brake structures are all upper and lower brakes on the same side, braking on the same track surface, and the dual brakes are linked by a connecting rod. Once a position on that side occurs, it is very likely that such dual brakes will fail.

[0030] The present application adopts the method of symmetrically arranging calipers on both sides of the shell, so as to realize double insurance of double brakes on both sides of the guide rail, so that the two double brakes are on different guide rail surfaces, and the double calipers perform double braking and brake on different guide rail surfaces, thereby realizing truly safe double brakes in different positions, which is safer and more secure when used. Even if the caliper on one side fails or there is a problem on the guide rail on that side, such as oil stains or unevenness, the caliper on the other side can also play a certain braking buffering role, and when the calipers on both sides brake at the same time, the braking is more efficient and smooth.

[0031] Moreover, the calipers of the present application are arranged on both sides of the fall arrester, that is, it is not easy for workers to press the calipers when working at height. The brake parts of the traditional fall arrester are arranged towards the body of the worker. In order to ensure safety during work and movement, the body is kept as close to the guide rail as possible to obtain some support from the guide rail. The brake parts of the fall arrester, such as calipers, clamping plates or pulling arms, can easily be pressed by the body and thus be in a braking state. The worker needs to keep a certain distance away from the guide rail to ensure that the brake parts can be rotated upward and be in a loose state, which makes the operation relatively troublesome. When moving up and down, you need to pay attention to whether you press the fall arrester hard. In addition, the brake parts extended towards the worker's body can easily hook the worker's clothes or other workpieces or hit the worker's body, causing discomfort and also bringing trouble to the construction. The calipers of the present application are located on both sides of the fall arrester, thus avoiding the problem of the above-mentioned traditional brake parts being arranged in the direction of the worker's body, thereby providing convenience for the worker when using it. Even if the worker presses on the fall arrester, the rope tied to the body can still drive the outer end of the fall arrester to rotate upward during the upward movement, thereby releasing the guide rail. As long as the pressure on the fall arrester is not too great during the upward movement, the fall arrester can be driven to move directly upward without deliberately loosening the fall arrester. Moreover, the worker's body cannot completely rest on the guide rail during the upward movement, and may only be loose and tight at times, and the pressure that may be generated will not be too great. When the body moves, it will naturally move away from the guide rail, but there is no need to move away from the guide rail as mentioned above to release the brake parts. This small distance allows the fall arrester to move upward smoothly and directly by the rope. The outer surface of the fall arrester is also flat, which is not easy to get caught on the worker's clothes or other objects, nor is it easy to hit the worker. Using the fall arrester of the present application is safer, smoother and more convenient.

[0032] Example 2:

[0033] The difference from the previous embodiment is that guide wheels 5 are sandwiched within the housing, located on both sides of the guide rail. At least two guide wheels are provided on each side of the guide rail, and the guide wheels on the same side of the guide rail are arranged on both sides of the caliper. This embodiment symmetrically arranges guide wheels on the left and right sides of the guide rail and on the upper and lower sides of the caliper. This ensures that the fall arrester moves smoothly up and down the guide rail, effectively preventing jamming, while also ensuring the stability and efficient, symmetrical synchronization of the caliper.

[0034] Example 3:

[0035] The difference from the above embodiment is that the inner sides of the front shell wall and the rear shell wall are respectively provided with a straight-line shaft hole 14, and the length direction of the straight-line shaft hole is perpendicular to the length direction of the guide rail, and the two ends of the wheel axle 51 of the guide wheel are respectively provided in the straight-line shaft holes of the front shell wall and the rear shell wall, and the straight-line shaft holes are through holes or blind holes.

[0036] A wheel seat 6 and an elastic component 7 are also provided in the shell cavity. The wheel seat is located on the outside of the guide wheel, and the elastic component is located on the outside of the wheel seat. An open shaft groove 61 is provided on the wheel seat corresponding to the wheel axle, and both ends of the wheel axle are arranged in the shaft groove. The elastic component rests on the wheel seat to indirectly push the guide wheel toward the guide rail.

[0037] The invention also provides a novel structure for preventing the guide wheel from being stuck during movement. The invention also provides a novel structure for preventing the guide wheel from being stuck during movement. The invention also provides a novel structure for preventing the guide wheel from being stuck during movement. The invention also provides a novel structure for preventing the guide wheel from being stuck during movement. The invention also provides a novel structure for preventing the guide wheel from being stuck during movement. The invention also provides a novel structure for preventing the guide wheel from being stuck during movement. The invention also provides a novel structure for preventing the guide wheel from being stuck during movement. The invention also provides a novel structure for preventing the guide wheel from being stuck during movement. The invention also provides a novel structure for preventing the guide wheel from being stuck during movement. The invention also provides a novel structure for preventing the guide wheel from being stuck during movement. Workers are also more likely to accept such fall arresters and truly apply them widely in their work, thereby greatly improving the safety of workers at work.

[0038] Example 4:

[0039] The difference from the above embodiment is that the wheel seat includes a load-bearing plate 62 located outside the guide wheel and axle seat plates 63 located at both ends of the guide wheel. The load-bearing plate and axle seat plates are connected. The guide wheel extends out of the wheel seat toward at least one side of the guide rail, and the elastic component abuts the outer surface of the load-bearing plate. The elastic component is an arc-shaped spring plate with the arc of the spring plate facing the wheel seat. The guide wheel has a guide groove defined on its circumference, and the side ends of the guide rail extend into the guide groove to mate with the guide wheel. The side shell wall is detachably connected to the front shell wall and / or the rear shell wall.

[0040] The arrangement of the structural components ensures that the spring piece acts fully and stably on the wheel seat. In addition, the wheel seat ensures the normal operation of the guide wheel and is easy to install.

[0041] In addition, a straight guide hole 101 parallel to the straight shaft hole is opened in the front shell wall and / or the rear shell wall, and a guide rod 631 inserted into the straight guide hole is provided on the shaft seat plate, thereby further ensuring that the wheel seat moves in a direction perpendicular to the guide rail under the action of the elastic component; or the front end of the top screw connecting the spring piece is directly rotatably connected to the load-bearing plate, thereby ensuring the stable use of the wheel seat; or the shaft seat plate is provided with a circular shaft hole 64 instead of an open shaft groove 61, and the two ends of the spring piece have arc-shaped outward-turned curling edges, and the two ends of the load-bearing plate are provided with arc-shaped flanges turned outward toward the side of the spring piece.

[0042] Embodiment 5:

[0043] This embodiment differs from the above-described embodiment in that a push screw 8, extending through the side shell wall, is connected between the spring clip and the side shell wall and is used to adjust the pressure of the spring clip against the wheel seat. The spring clip's through hole can be provided with an internal thread, while the push screw can be provided with an external thread. The push screw and the side shell wall are connected by rotation rather than threading, so that the tension of the spring clip can be adjusted by rotating the push screw. The push screw not only ensures that the spring clip is not easily disconnected from the side shell wall, but also allows the distance between the outer edge of the spring clip and the inner edge of the side shell wall to be adjusted, thereby adjusting the pressure applied by the spring clip to the wheel seat. This adjustment method facilitates assembly of the guide wheel with the guide rail and, consequently, allows the single fall arrester to be used with guide rails of varying sizes and widths, achieving a multi-purpose device. After the entire fall arrester is assembled, the elastic component is always in a tensioned state. The elastic force of the adjustable elastic component is adjusted, so the stability of the coordination of the guide wheel, wheel seat, elastic component and side shell wall can be always maintained.

[0044] Example 6:

[0045] The difference from the above embodiment is that the caliper comprises a caliper arm and a caliper head. The caliper head includes a first brake position 321 and one or more sequentially arranged safety brake positions 322. The distance between the first brake position and the axis of the caliper's hinge axis is less than the distance between the safety brake position closest to the first brake position and the axis of the caliper's hinge axis. When there are multiple safety brake positions, the distances between the safety brake positions sequentially arranged along the outer surface of the caliper head, starting from the first brake position, and the axis of the caliper's hinge axis gradually increase. The lower end of the caliper head can be arc-shaped and expanded to form a braking surface 323 that is increasingly farther from the axis of the hinge axis from top to bottom. Alternatively, multiple safety brake positions can be provided on the braking surface. Since the safety brake positions are sequentially farther away from the axis of the caliper's hinge axis as described above, if the first brake position fails during caliper rotation, the braking surface or multiple safety brake positions provide multi-point protection. In particular, in the event of an abnormal depression in the guide rail, the safety brake positions can effectively provide a remedy, ensuring safety in addition to ensuring an unexpected situation.

[0046] Embodiment seven:

[0047] The difference from the above-mentioned embodiment is that brake plates 421 are vertically provided on both sides of the guide rail 42. The brake plates can be embedded in the wheel grooves of the guide wheel and cooperate with the guide wheel. The width of the brake plates is greater than the thickness of the guide rail. The side ends of the guide rail of the present application are provided with brake plates with increased width. Accordingly, the braking position of the caliper head is also adaptively widened, thereby increasing the braking surface, thereby increasing friction and improving the braking effect. The brake plates can be integrally connected to the guide rail, and the connection between the brake plates and the guide rail is shaped to gradually expand from the inside to the outside.

[0048] The present application adopts the method of symmetrically arranging calipers on both sides of the shell, so as to realize double insurance of double brakes on both sides of the guide rail, so that the two double brakes are on different guide rail surfaces, and the double calipers perform double braking and brake on different guide rail surfaces, thereby realizing truly safe double brakes in different positions, which is safer and more secure when used. Even if the caliper on one side fails or there is a problem on the guide rail on that side, such as oil stains or unevenness, the caliper on the other side can also play a certain braking buffering role, and when the calipers on both sides brake at the same time, the braking is more efficient and smooth.

[0049] Furthermore, the calipers of the present application are arranged on both sides of the fall arrester, which has another advantage: it is not easy for workers to press against the calipers when working at height. The calipers of the present application are located on both sides of the fall arrester, thus avoiding the problem of traditional brake parts being arranged in the direction of the worker's body, thereby providing convenience for the worker when using it. Even if the worker presses on the fall arrester, the rope tied to the body can still be used to drive the outer end of the fall arrester to rotate upward during the upward process, so that the calipers release the guide rail. When going up, as long as the pressure on the fall arrester is not too great, the fall arrester can be driven to move directly upward without deliberately loosening the fall arrester. In addition, the outer surface of the fall arrester is flat and not easy to be hooked on the worker's clothes or other workpieces, nor is it easy to hit the worker. Using the fall arrester of the present application is safer, smoother and more convenient.

Claims

1. A double insurance fall arrester, characterized by: The invention comprises a shell (1), a shell cavity (2) and a caliper (3); the shell cavity can be used for inserting a T-shaped guide rail (4); at least one caliper is symmetrically provided on both sides of the shell; the inner end of the caliper penetrates the side shell wall (12) of the shell and is arranged opposite to the side end face of the guide rail and can be pressed against the side end face; the caliper is hinged in the shell cavity.

2. A double insurance fall arrester according to claim 1, characterized in that: The shell cavity comprises a front shell wall (11), a side shell wall (12) and a rear shell wall (13) symmetrically arranged on both sides of the guide rail, the side shell wall is connected between the front shell wall and the rear shell wall, the guide rail comprises a support rail (41) and a guide rail (42), the support rail extends into the shell cavity through the gap between the two rear shell walls, a through groove (121) is opened on the side shell wall, and the caliper is inserted into the through groove.

3. A double insurance fall arrester according to claim 2, characterized in that: Guide wheels (5) are clamped on both sides of the guide rail in the shell cavity.

4. A double insurance fall arrester according to claim 3, characterized in that: At least two guide wheels are provided on each side of the guide rail, and the guide wheels located on the same side of the guide rail are respectively arranged on both sides of the caliper.

5. A double insurance fall arrester according to claim 3 or 4, characterized in that: The inner sides of the front shell wall and the rear shell wall are respectively provided with straight-line shaft holes (14), and the length direction of the straight-line shaft holes is perpendicular to the length direction of the guide rail. The two ends of the wheel axle (51) of the guide wheel are respectively provided in the straight-line shaft holes of the front shell wall and the rear shell wall. The straight-line shaft holes are through holes or blind holes. The side shell wall is detachably connected to the front shell wall and / or the rear shell wall.

6. A double insurance fall arrester according to claim 5, characterized in that: A wheel seat (6) and an elastic component (7) are also provided in the shell cavity. The wheel seat is located on the outside of the guide wheel, and the elastic component is located on the outside of the wheel seat. An open shaft groove (61) is provided on the wheel seat corresponding to the wheel axle. Both ends of the wheel axle are provided in the shaft groove. The elastic component abuts against the wheel seat to indirectly push the guide wheel toward the guide rail.

7. A double insurance fall arrester according to claim 6, characterized in that: The wheel seat comprises a load-bearing plate (62) located outside the guide wheel and an axle seat plate (63) located at both ends of the guide wheel, the load-bearing plate and the axle seat plate are connected, the guide wheel extends out of the wheel seat at least toward one side of the guide rail, and the elastic component abuts against the outer surface of the load-bearing plate.

8. The double-safety fall arrester according to claim 6, characterized in that: The elastic component is an arc-shaped spring piece, the arc opening of the spring piece faces the wheel seat, a guide groove is provided on the circumferential surface of the guide wheel, and the side end of the guide rail extends into the guide groove to cooperate with the guide wheel.

9. A double-safety fall arrester according to claim 8, characterized in that: A top screw (8) is connected between the spring piece and the side shell wall and is passed through the side shell wall and is used to adjust the pressure of the spring piece against the wheel seat.

10. The double-safety fall arrester according to claim 2, characterized in that: The caliper includes a caliper arm and a caliper head, and the caliper head includes a first brake position and one or more safety brake positions arranged in sequence. The distance from the first brake position to the axis center of the caliper's hinge axis is smaller than the distance from the safety brake position closest to the first brake position to the axis center of the caliper's hinge axis. When there are multiple safety brake positions, the distance from the safety brake positions arranged in sequence along the outer surface of the caliper head starting from the first brake position to the axis center of the caliper's hinge axis gradually increases.

11. The double-safety fall arrester according to claim 3, characterized in that: Brake plates (421) are vertically provided at both side ends of the guide rail (42). The brake plates can be embedded in the wheel groove of the guide wheel and cooperate with the guide wheel. The width of the brake plates is greater than the thickness of the guide rail.

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