Safety clamp interlocking structure of elevator

Abstract

The utility model relates to the technical field of elevators, in particular to a safety clamp interlocking structure of an elevator, comprising a clamp seat and a guide rail, wherein both sides of the inner wall of the clamp seat are fixedly connected with a guide wedge, and the inner side of the guide wedge is provided with a rail groove, the inner side of the rail groove is slidably connected with a rail bar, and the outer side of the rail bar is fixedly connected with a wedge block, and a transmission part is installed on the inner side of the clamp seat, and a cleaning part is installed on the transmission part. The transmission part comprises a back plate arranged on the rear side of the wedge block, and guide channels are symmetrically opened on the upper and lower sides of the back plate. The left and right sides of the guide channel are slidably connected with guide blocks, and the front ends of a group of guide blocks are fixedly connected to the rear end surface of the wedge block on the same side thereof. In the utility model, by arranging structures such as a cleaning part and a stopper, the safety clamp interlocking structure can clean the rail groove of the displacement of the wedge block during emergency braking, so that a group of wedge blocks can smoothly move upward toward each other to clamp and lock the guide rail.

Description

Technical Field

[0001] The utility model relates to the technical field of elevators, in particular to a safety clamp interlocking structure of an elevator. Background Art

[0002] The safety clamp interlocking structure is a safety protection device for elevators. During normal operation, the safety clamp moves with the elevator car. When the elevator car accelerates unexpectedly, the pull rod obtains a speed difference relative to the clamp seat and is lifted upward, pulling the two wedge blocks upward. Under the guidance of the guide wedge blocks, the two wedge blocks move upward in conjunction with each other and clamp on the guide rails, locking the guide rails and achieving emergency braking.

[0003] The existing safety clamp interlocking structure is usually installed on the outside of the elevator car, so that its guide wedge is also exposed to the external environment. The rail groove of the guide wedge is affected by the environment for a long time and dust and impurities are attached. Since the guide wedge guides the wedge block through the track and the inclined surface, the dust and impurities in the rail groove of the guide wedge will hinder the displacement of the wedge block, and then affect the emergency braking of the safety clamp. Therefore, according to the above problem, a safety clamp interlocking structure of an elevator is proposed. Utility Model Content

[0004] The utility model aims to provide a safety clamp interlocking structure for an elevator, so as to solve the problem that dust and impurities will adhere to the inner wall of the rail groove of the guide wedge block of the existing safety clamp interlocking structure in the external environment for a long time, which will hinder the displacement of the wedge block and further affect the emergency braking of the safety clamp.

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

[0006] A safety clamp interlocking structure for an elevator comprises a clamp seat and a guide rail, wherein both sides of the inner wall of the clamp seat are fixedly connected with guide wedges, a rail groove is provided on the inner side of the guide wedge, a rail bar is slidably connected to the inner side of the rail groove, a wedge block is fixedly connected to the outer side of the rail, a transmission part is installed on the inner side of the clamp seat, a cleaning part is installed on the transmission part, the transmission part comprises a back plate arranged on the rear side of the wedge block, guide channels are symmetrically provided on the upper and lower sides of the back plate, guide blocks are slidably connected to the left and right sides of the guide channels, and the front ends of a group of guide blocks are fixedly connected to the rear end surface of the wedge block on the same side thereof. Fixed connection, the upper side of the back plate is fixedly connected with a folding plate, the upper end of the folding plate is fixedly connected with a pull rod passing through the clamp seat, the cleaning part includes a folding airbag, the upper side of the folding plate is fixedly connected with a folding airbag, the upper side of the folding airbag is connected with an intake valve pipe, the left and right sides of the lower part of the folding airbag are connected with exhaust valve pipes, the other ends of the exhaust valve pipes are connected with nozzles, the nozzles are fixedly connected to the upper side of the wedge block, the inner wall of the clamp seat is fixedly connected with a stopper, the lower end face of the stopper is fixedly connected to the upper end face of the folding airbag, and the guide rail is arranged between the outer end faces of a group of wedge blocks.

[0007] Preferably, the guide block is composed of a slider and a limit block, the limit block of the guide block is arranged on the rear side of the back plate, the diameter of the slider of the guide block is the same as the track width of the guide track, and there are four guide blocks in total and they are divided into two left and right groups.

[0008] Preferably, a notch is provided on the inner side of the block, the intake valve pipe is provided on the inner side of the notch of the block, the intake valve pipe is composed of a pipe body and a one-way valve for circulation from top to bottom, and the exhaust valve pipe is composed of a pipeline and a one-way valve for circulation toward the nozzle direction.

[0009] Preferably, the guide rail is arranged on the inner side of the front notch of the clamp seat, a group of convex strips are arranged on the side of the wedge block close to the guide rail, the inclined surface of the wedge block is fitted with the inclined surface of the guide wedge block, and the cleaning part is arranged on the outer side of the guide rail, and a distance is left between the cleaning part and the guide rail.

[0010] Preferably, the upper end surface of the rail and the upper end surface of the wedge block are arranged in the same plane, the jet ends of the nozzles are arranged toward the guide wedge block, the jet ends of the nozzles are aligned with the rail groove, and a distance is left between the nozzles and the rail groove.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] In the utility model, the transmission part, the cleaning part and the stopper are provided so that the stopper can fix the upper end of the folding airbag of the cleaning part. It should be noted that the external speed limiter is connected to the pull rod. When the elevator car accelerates unexpectedly, the pull rod of the transmission part obtains a speed difference relative to the clamp seat and is lifted upward, so that the transmission part drives the wedge blocks on both sides to move upward toward each other. At the same time, the upward displacement of the transmission part will squeeze the folding airbag of the cleaning part, so that the air inside the folding airbag is discharged through the exhaust valve pipe and the nozzle, and the airflow discharged through the nozzle can clean the dust in the rail groove, so that the rail bar can be smoothly displaced in the rail groove, and the safety clamp interlocking structure can clean the rail groove where the wedge block is displaced during emergency braking, so that a group of wedge blocks can be smoothly displaced upward toward each other to clamp and lock the guide rail, solving the problem that the guide wedge block of the existing safety clamp interlocking structure will be attached to the inner wall of the rail groove for a long time in the external environment, which will hinder the displacement of the wedge block and further affect the emergency braking of the safety clamp. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 For this utility model Figure 1 A schematic diagram of the structure of the guide rail;

[0015] Figure 3 It is a structural schematic diagram of the transmission part of the utility model;

[0016] Figure 4 It is a structural schematic diagram of the cleaning part of the utility model;

[0017] Figure 5 It is a structural schematic diagram of the stopper of the utility model.

[0018] In the figure: 1. clamp seat; 2. guide wedge block; 3. rail groove; 4. rail; 5. wedge block; 6. transmission part; 61. back plate; 62. guide; 63. guide block; 64. folding plate; 65. pull rod; 7. cleaning part; 71. folding airbag; 72. intake valve pipe; 73. exhaust valve pipe; 74. nozzle; 8. block; 9. guide rail. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0021] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps described in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0022] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0023] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0024] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0025] See also Figure 1-5 , the utility model provides a technical solution:

[0026] A safety clamp interlocking structure for an elevator comprises a clamp seat 1 and a guide rail 9, wherein both sides of the inner wall of the clamp seat 1 are fixedly connected with guide wedge blocks 2, a rail groove 3 is provided on the inner side of the guide wedge block 2, a rail bar 4 is slidably connected to the inner side of the rail groove 3, a wedge block 5 is fixedly connected to the outer side of the rail bar 4, a transmission part 6 is installed on the inner side of the clamp seat 1, a cleaning part 7 is installed at the transmission part 6, the transmission part 6 comprises a back plate 61 arranged on the rear side of the wedge block 5, guide channels 62 are symmetrically provided on the upper and lower sides of the back plate 61, guide blocks 63 are slidably connected to the left and right sides of the guide channel 62, and the front ends of a group of guide blocks 63 are fixedly connected to the rear end surface of the wedge block 5 on the same side thereof A folding plate 64 is fixedly connected to the upper side of the back plate 61, and a pull rod 65 passing through the clamp seat 1 is fixedly connected to the upper end of the folding plate 64. The cleaning part 7 includes a folding airbag 71, and a folding airbag 71 is fixedly connected to the upper side of the folding plate 64. The upper side of the folding airbag 71 is connected to an intake valve pipe 72, and the left and right sides of the lower part of the folding airbag 71 are connected to exhaust valve pipes 73, and the other ends of the exhaust valve pipes 73 are connected to nozzles 74, and the nozzles 74 are fixedly connected to the upper side of the wedge block 5. A stopper 8 is fixedly connected to the inner wall of the clamp seat 1, and the lower end face of the stopper 8 is fixedly connected to the upper end face of the folding airbag 71. A guide rail 9 is arranged between the outer end faces of a group of wedge blocks 5.

[0027] The guide block 63 is composed of a slider and a limit block. The limit block of the guide block 63 is arranged on the rear side of the back plate 61. Through this arrangement, the guide block 63 can be limited to the inner side of the guide channel 62 in cooperation with the wedge block 5 on the front side. The slider diameter of the guide block 63 is the same as the track width of the guide channel 62. Through this arrangement, the stability of the displacement of the guide block 63 inside the guide channel 62 is improved. There are four guide blocks 63 in total and they are divided into two groups on the left and right. A notch is arranged on the inner side of the stopper 8. The intake valve pipe 72 is arranged on the inner side of the notch of the stopper 8. Through this arrangement, the stopper 8 can fix the upper end of the folded airbag 71 without affecting the intake valve pipe 72. The intake valve pipe 72 is composed of a pipe body and a one-way valve that circulates from top to bottom. The exhaust valve pipe 73 is composed of a pipe and a one-way valve that circulates toward the nozzle 74. Through this arrangement, the folded airbag 71 can be evacuated at the upper end and exhausted at the lower end. The guide rail 9 is arranged on the inner side of the front notch of the clamp seat 1, and a group of convex strips are arranged on the side of the wedge block 5 close to the guide rail 9. Through this arrangement, the locking ability of the wedge block 5 to the guide rail 9 is improved, and the inclined surface of the wedge block 5 is in contact with the inclined surface of the guide wedge block 2. The cleaning part 7 is arranged on the outer side of the guide rail 9, and a spacing is left between the cleaning part 7 and the guide rail 9. Through this arrangement, the guide rail 9 and the cleaning part 7 do not affect each other; the upper end surface of the rail 4 and the upper end surface of the wedge block 5 are arranged in the same plane. Through this arrangement, the nozzle 74 is arranged on the upper side of the rail 4, and the jet ends of the nozzle 74 are all arranged toward the guide wedge block 2, and the jet ends of the nozzle 74 are all aligned with the rail groove 3. Through this arrangement, the airflow ejected by the nozzle 74 can clean the rail groove 3 area where the rail 4 is about to move, and there is a spacing between the nozzle 74 and the rail groove 3. Through this arrangement, the displacement of the nozzle 74 will not be affected by the rail groove 3.

[0028] Workflow: The actions of the elevator's safety clamp interlocking structure during operation are as follows. First, it should be noted that the external speed limiter is connected to the pull rod 65 of the transmission part 6. When the elevator car accelerates unexpectedly, the pull rod 65 of the transmission part 6 obtains a speed difference relative to the clamp seat 1 and is lifted upward, so that the transmission part 6 drives the wedge blocks 5 on both sides to move upward toward each other with the rail groove 3 and the rail 4 as the guide (the pull rod 65 drives the folding plate 64 and the back plate 61 to move upward, and the upward movement of the back plate 61 drives the wedge blocks 5 on both sides to move upward through the guide block 63). At the same time, the upward displacement of the folding plate 64 of the transmission part 6 will squeeze the folding airbag 71 of the cleaning part 7 (the upper end of the folding airbag 71 is limited by the stopper 8, so that the folding airbag 71 can be squeezed). The air inside the folded airbag 71 is discharged through the exhaust valve pipe 73 and the nozzle 74, and the airflow discharged through the nozzle 74 can clean the dust in the track groove 3, so that the rail 4 can be smoothly displaced in the track groove 3, so that the safety clamp interlocking structure can clean the track groove 3 where the wedge block 5 is displaced during emergency braking, and a group of wedge blocks 5 can be smoothly displaced upward toward each other to clamp and lock the guide rail 9. On the other hand, when the safety clamp needs to be reset, a group of wedge blocks 5 can be driven to move downward and reset by moving the transmission part 6 downward, and the downward movement of the folding plate 64 of the transmission part 6 can drive the folded airbag 71 to unfold, and the unfolded folded airbag 71 is evacuated through the intake valve pipe 72 to complete the resetting of the safety clamp interlocking structure.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A safety clamp interlocking structure for an elevator, comprising a clamp seat (1) and a guide rail (9), characterized in that: Guide wedge blocks (2) are fixedly connected to both sides of the inner wall of the clamp seat (1), a rail groove (3) is provided on the inner side of the guide wedge block (2), a rail bar (4) is slidably connected to the inner side of the rail groove (3), a wedge block (5) is fixedly connected to the outer side of the rail bar (4), a transmission part (6) is installed on the inner side of the clamp seat (1), a cleaning part (7) is installed on the transmission part (6), the transmission part (6) comprises a back plate (61) arranged on the rear side of the wedge block (5), guide channels (62) are symmetrically provided on the upper and lower sides of the back plate (61), guide blocks (63) are slidably connected to the left and right sides of the guide channels (62), the front ends of a group of guide blocks (63) are fixedly connected to the rear end surface of the wedge block (5) on the same side, and the upper side of the back plate (61) is fixedly connected to the rear end surface of the wedge block (5) on the same side. A folding plate (64) is connected, and the upper end of the folding plate (64) is fixedly connected to a pull rod (65) passing through the clamp seat (1); the cleaning part (7) includes a folding airbag (71); the upper side of the folding plate (64) is fixedly connected to a folding airbag (71); the upper side of the folding airbag (71) is connected to an intake valve pipe (72); the left and right sides of the lower part of the folding airbag (71) are connected to exhaust valve pipes (73); the other ends of the exhaust valve pipes (73) are connected to nozzles (74); the nozzles (74) are fixedly connected to the upper side of the wedge block (5); the inner wall of the clamp seat (1) is fixedly connected to a stopper (8); the lower end face of the stopper (8) is fixedly connected to the upper end face of the folding airbag (71); and the guide rail (9) is arranged between the outer end faces of a group of wedge blocks (5).

2. The safety gear interlocking structure of an elevator according to claim 1, characterized in that: The guide block (63) is composed of a slider and a limit block. The limit block of the guide block (63) is arranged on the rear side of the back plate (61). The diameter of the slider of the guide block (63) is the same as the track width of the guide track (62). A total of four guide blocks (63) are arranged and divided into two groups on the left and right.

3. The safety gear interlocking structure of an elevator according to claim 1, characterized in that: The inner side of the block (8) is provided with a notch, the intake valve pipe (72) is arranged inside the notch of the block (8), the intake valve pipe (72) is composed of a pipe body and a one-way valve for circulation from top to bottom, and the exhaust valve pipe (73) is composed of a pipeline and a one-way valve for circulation in the direction of the nozzle (74).

4. The safety gear interlocking structure of an elevator according to claim 1, characterized in that: The guide rail (9) is arranged on the inner side of the front notch of the clamp seat (1); a group of convex strips are arranged on the side of the wedge block (5) close to the guide rail (9); the inclined surface of the wedge block (5) is in contact with the inclined surface of the guide wedge block (2); the cleaning portion (7) is arranged on the outer side of the guide rail (9); and a distance is left between the cleaning portion (7) and the guide rail (9).

5. The safety gear interlocking structure of an elevator according to claim 1, characterized in that: The upper end surface of the rail (4) and the upper end surface of the wedge block (5) are arranged in the same plane, the jet ends of the nozzles (74) are arranged toward the guide wedge block (2), the jet ends of the nozzles (74) are aligned with the rail groove (3), and a distance is left between the nozzles (74) and the rail groove (3).

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