Elevator door limiting device for elevator maintenance

Abstract

The utility model discloses an elevator door limiting device for elevator maintenance, which belongs to the technical field of elevator maintenance equipment and comprises four supporting rods, a guide shell, a fastener and a limiting block, the four supporting rods are mutually hinged through hinge pieces and form hinge joints in upper, lower, left and right directions, the guide shell is provided with a sliding groove, and the fastener is in threaded connection with the guide shell. The top end of the supporting rod is rotationally connected with the lower side hinge piece, and the door clamp is rotationally arranged at the outer end of the supporting rod. According to the technical scheme, when the fastener rotates, due to the threaded connection effect, the top end of the fastener can move up and down, then the hinge joint on the lower side can be driven to move up and down, the distance between the upper hinge joint and the lower hinge joint is changed, the supporting rod is controlled to be integrally retracted or opened, and the limiting requirement for different opening and closing amplitudes of a landing door can be met; and meanwhile, the door clamp can be effectively connected with the landing door, reverse sliding of the landing door is prevented, the whole device can be fixedly arranged on the landing door through friction force between the door clamp and the landing door, and the ground operation space cannot be occupied.

Description

Technical Field

[0001] The utility model relates to the technical field of elevator maintenance equipment, in particular to an elevator door limiting device for elevator maintenance. Background Art

[0002] As an indispensable and important facility in modern buildings, elevators require regular maintenance and servicing to ensure their safe and reliable operation. Before starting maintenance work, maintenance personnel need to cut off the power supply to the elevator to avoid dangers caused by accidental startup or power supply. Then, maintenance and inspection work are carried out according to the maintenance process, including lubricating parts, cleaning the elevator machine room, checking electrical circuits, etc. This includes the inspection and maintenance of elevator floor doors. During the inspection, it is necessary to frequently push and pull the floor doors to test their smoothness. The floor doors also need to be fixed at a specified opening and closing degree to facilitate observation of the movement state of the upper opening and closing structure of the floor door, and to facilitate the disassembly, replacement or cleaning of specified parts.

[0003] During the existing floor door inspection and maintenance operations, workers usually cooperate with each other to use manpower to limit the elevator door to prevent it from sliding during the maintenance process and affecting the smooth progress of the maintenance work. However, this will lead to a waste of manpower, and the manual limiting method will also occupy the working space at the floor door position, bringing inconvenience to the maintenance operation. Therefore, in order to solve the above problems, an elevator door limit device for elevator maintenance is proposed. Utility Model Content

[0004] The technical problem to be solved by the present invention is to provide an elevator door limit device for elevator maintenance. The elevator door limit device drives the hinged node on the lower side to move up and down through a fastener, thereby controlling the overall inward retraction or expansion of the support rod, thereby being able to meet the limiting requirements of different opening and closing ranges of the floor door. At the same time, the door clamp can be effectively connected to the floor door to prevent the floor door from sliding in the opposite direction, and the friction between the door clamp and the floor door can also fix the entire device on the floor door without occupying ground space. This solves the technical problem in the prior art that manpower is used to limit the elevator door during maintenance, which leads to waste of manpower and occupies more working space.

[0005] The technical solution adopted by the embodiment of the present application to solve the technical problem is:

[0006] An elevator door limit device for elevator maintenance includes four support rods, which are hinged to each other by hinges and form hinge nodes in four directions: up, down, left and right; a guide housing with a slide groove, a fastener, which is threadedly connected to the guide housing and has a top end rotatably connected to the lower hinge; and a door clamp, which is rotatably set at the outer end of the support rod, wherein the two ends of the upper hinge are fixed to the top of the guide housing by fixed connecting parts, and the two ends of the lower hinge are fixed with a snap-on sliding member, and the snap-on sliding member is slidably set in the slide groove.

[0007] Through the above-mentioned structural form, when the fastener rotates, due to the effect of the threaded connection, its top end will move up and down, thereby driving the hinge node on the lower side to move up and down, changing the distance between the upper and lower hinge nodes, so as to control the overall retraction or expansion of the support rod, and can meet the limiting requirements of different opening and closing ranges of the floor door; at the same time, the door clamp can generate an effective connection with the floor door to prevent the floor door from sliding in the opposite direction, and the friction between the door clamp and the floor door can also fix the entire device on the floor door without occupying the ground working space.

[0008] In one possible implementation, the hinge includes a connecting shaft rotatably connected to the support rods on both sides, anti-slip end plates are fixedly connected to both ends of the connecting shaft, and a middle sleeve is movably sleeved in the middle of the connecting shaft and is in close contact with the support rods on both sides.

[0009] Through the above structural form, the hinge between the two side support rods can be achieved by the connecting shaft, and the anti-slip end piece and the middle sleeve can be combined to play a limiting role, preventing the support rods from sliding on the connecting shaft and affecting normal use.

[0010] In a possible implementation, the inner end surface of the fixed connector is fixedly connected to the anti-slip end piece of the upper hinge, and the outer end surface thereof is fixedly connected to the inner wall of the guide housing.

[0011] By means of the above-mentioned structural form, the upper hinged member can be fixed to the top of the guide housing, thereby constraining the top of the support rod so that it can only rotate but cannot change position.

[0012] In a possible implementation, a slot is provided in the middle of the snap-fit sliding member, which is slidably snap-fitted into the slide groove through the slot, and the inner end surface of the snap-fit sliding member is fixedly connected to the anti-slip end piece of the lower hinged member.

[0013] Through the above-mentioned structural form, the movement of the lower hinged part can be constrained by the way that the sliding part is clamped in the sliding groove and slidably connected, so that it can only move up and down, and thus can match the movement trajectory of the fastener.

[0014] In a possible implementation, a threaded hole plate is fixedly provided at the bottom of the guide housing, a cylindrical protrusion is welded to the lower end surface of the threaded hole plate, and a threaded hole communicating with the middle of the threaded hole plate and the cylindrical protrusion is opened.

[0015] The above-mentioned structural form provides the necessary structural foundation for the threaded connection between the fastener and the bottom of the guide shell.

[0016] In one possible implementation, the fastener includes a threaded shaft threadedly connected to a threaded hole plate, the top end of the threaded shaft is rotatably connected to a rotating joint, the top of the rotating joint is fixedly connected to the middle sleeve of the lower hinge, and the bottom end of the threaded shaft is fixedly connected to an operating handwheel.

[0017] Through the above-mentioned structural form, the user can rotate the threaded shaft by operating the handwheel. Due to the action of the thread engagement, the top end of the threaded shaft will move up and down synchronously during the rotation process, thereby driving the lower hinge to move up and down, and controlling the overall opening range of the support rod.

[0018] In one possible implementation, the door clamp includes a rotating block rotatably arranged at the end of the support rod, with clamps fixed on both sides of the rotating block, a sliding shaft slidingly arranged on the clamp, and a suction cup rotatably connected to the inner end of the sliding shaft, and the suction cup is arranged on the inner side of the clamp.

[0019] Through the above-mentioned structural form, since the rotating block is rotatably connected to the end of the support rod, it can always ensure close fit with the end face of the floor door and play a reliable supporting role. When the position adjustment is completed, the suction cup is pressed by the sliding shaft to make it firmly adsorbed on the surface of the floor door, thereby achieving a fixed connection between the floor door and the plywood.

[0020] In a possible implementation, a serial guide rod is fixedly connected to the rotating block of the upper door fixture, and a through hole is opened on the rotating block of the lower door fixture, and the serial guide rod is slidably arranged in the through hole.

[0021] Through the above-mentioned structural form, since the rotating block is rotatably connected to the end of the support rod, the door clamp will sag under the action of gravity. When in use, the door clamp needs to be rotated to a horizontal state to establish a stable connection with the floor door. The setting of the series guide rod can keep the upper and lower door clamps in a horizontal state at all times, which is convenient for workers to use. The series guide rod is slidably set in the through hole and will not interfere with the overall support rod when it is retracted or expanded.

[0022] In summary, the present invention has the following beneficial technical effects:

[0023] When the fastener rotates, due to the threaded connection, its top will move up and down, which in turn can drive the hinge node on the lower side to move up and down, changing the distance between the upper and lower hinge nodes to control the overall retraction or expansion of the support rod, which can meet the limit requirements of different opening and closing ranges of the landing door;

[0024] At the same time, the door clamp can be effectively connected to the landing door through the suction cup to prevent the landing door from sliding in the opposite direction. The friction between the suction cup and the landing door can also fix the entire device on the landing door without occupying the ground working space.

[0025] In addition, since the rotating block is rotatably connected to the end of the support rod, the door clamp will sag under the action of gravity. When in use, the door clamp needs to be rotated to a horizontal state to establish a stable connection with the floor door. The setting of the series guide rod can keep the upper and lower door clamps in a horizontal state at all times, which is convenient for workers to use. The series guide rod is slidably set in the through hole and will not interfere with the overall support rod when it is retracted or expanded. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0027] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0028] Figure 2 It is a schematic diagram of the local structure of the utility model;

[0029] Figure 3 This is a schematic diagram of the hinge structure of the present invention;

[0030] Figure 4 This is a schematic diagram of the door clamp structure of the present utility model.

[0031] In the figure: 1. support rod; 2. hinged part; 21. fixed connecting part; 22. snap-on sliding part; 201. connecting shaft; 202. anti-slip end piece; 203. middle sleeve; 3. guide shell; 31. slide groove; 32. threaded hole plate; 4. fastener; 41. threaded shaft; 42. rotating joint; 43. operating hand wheel; 5. door clamp; 51. rotating block; 52. splint; 53. sliding shaft; 54. suction cup; 6. series guide rod. DETAILED DESCRIPTION

[0032] The technical solution in the embodiments of the present application is to solve the problems of the above-mentioned background technology, and the overall idea is as follows:

[0033] like Figure 1 - Figure 2As shown, the present embodiment provides an elevator door limit device for elevator maintenance, comprising four struts 1, which are hinged to each other by hinges 2 and form hinge nodes in four directions: up, down, left and right; a guide housing 3, on which a slide groove 31 is provided; a fastener 4, which is threadedly connected to the guide housing 3, and whose top end is rotatably connected to the lower hinge 2; a door clamp 5, which is rotatably arranged at the outer end of the strut 1, wherein the two ends of the upper hinge 2 are fixedly arranged at the top of the guide housing 3 by fixed connecting members 21, and the two ends of the lower hinge 2 are fixedly provided with a snap-on sliding member 22, which is a snap-on sliding member. 22 is slidingly arranged in the slide groove 31. Through the above-mentioned structural form, when the fastener 4 rotates, due to the effect of the threaded connection, its top end will move up and down, thereby driving the hinge node on the lower side to move up and down, changing the distance between the upper and lower hinge nodes, so as to control the overall retraction or expansion of the support rod 1, and can meet the limiting requirements of different opening and closing ranges of the floor door; at the same time, the door clamp 5 can generate an effective connection with the floor door to prevent the floor door from sliding in the opposite direction, and the friction between the door clamp 5 and the floor door can also fix the device as a whole on the floor door without occupying the ground working space.

[0034] like Figure 3 As shown, the hinge 2 includes a connecting shaft 201 rotatably connected to the two side support rods 1, and anti-slip end pieces 202 are fixedly connected to both ends of the connecting shaft 201, and a middle sleeve 203 is movably sleeved in the middle of the connecting shaft 201 and is in close contact with the two side support rods 1. Through the above-mentioned structural form, the connecting shaft 201 can be used to realize the hinge between the two side support rods 1, and the anti-slip end piece 202 and the middle sleeve 203 can be combined to play a limiting role to prevent the support rod 1 from sliding on the connecting shaft 201 and affecting normal use.

[0035] like Figure 2 As shown, the inner end face of the fixed connecting part 21 is fixedly connected to the anti-slip end piece 202 of the upper hinge part 2, and at the same time, its outer end face is fixedly connected to the inner wall of the guide shell 3. Through the above-mentioned structural form, the upper hinge part 2 can be fixed to the top of the guide shell 3, which plays a restraining role on the top of the support rod 1, so that it can only rotate but cannot change its position.

[0036] In addition, a slot is provided in the middle of the snap-in sliding member 22, which is slidably snap-into the slide groove 31 through the slot, and the inner end face of the snap-in sliding member 22 is fixedly connected to the anti-slip end piece 202 of the lower hinge 2. Through the above-mentioned structural form, the snap-in sliding member 22 can be snapped into the slide groove 31 and slidably connected to constrain the movement of the lower hinge 2, so that it can only move up and down, and thus can cooperate with the movement trajectory of the fastener 4.

[0037] like Figure 2As shown, a threaded hole plate 32 is fixedly provided at the bottom of the guide shell 3, and a cylindrical protrusion is welded on the lower end surface of the threaded hole plate 32. A threaded hole connecting the threaded hole plate 32 and the middle part of the cylindrical protrusion is provided. Through the above-mentioned structural form, the necessary structural foundation is provided for the threaded connection between the fastener 4 and the bottom of the guide shell 3.

[0038] The fastener 4 includes a threaded shaft 41 threadedly connected to the threaded hole plate 32, and the top end of the threaded shaft 41 is rotatably connected to a rotating joint 42. The top of the rotating joint 42 is fixedly connected to the middle sleeve 203 of the lower hinge 2, and the bottom end of the threaded shaft 41 is fixedly connected to an operating handwheel 43. Through the above structure, the user can rotate the threaded shaft 41 by operating the handwheel 43. Due to the action of the threaded engagement, the top end of the threaded shaft 41 will move up and down synchronously during the rotation process, thereby driving the lower hinge 2 to move up and down, and controlling the overall opening range of the support rod 1.

[0039] like Figure 4 As shown, the door clamp 5 includes a rotating block 51 rotatably set at the end of the support rod 1, and clamps 52 are fixed on both sides of the rotating block 51. A sliding shaft 53 is slidably set on the clamping plate 52. The inner end of the sliding shaft 53 is rotatably connected to a suction cup 54, and the suction cup 54 is provided on the inner side of the clamping plate 52. Through the above-mentioned structural form, since the rotating block 51 is rotatably connected to the end of the support rod 1, it can always ensure that it fits closely with the end face of the floor door and plays a reliable supporting role. When the position adjustment is completed, the suction cup 54 is pressed by the sliding shaft 53 to make it firmly adsorbed on the surface of the floor door, so that a fixed connection between the floor door and the clamping plate 52 can be achieved.

[0040] like Figure 4 As shown, a serial guide rod 6 is fixedly connected to the rotating block 51 of the upper door clamp 5, and a through hole is opened on the rotating block 51 of the lower door clamp 5, and the serial guide rod 6 is slidably set in the through hole. Since the rotating block 51 is rotatably connected to the end of the support rod 1, the door clamp 5 will sag under the action of gravity. When in use, the door clamp 5 needs to be rotated to a horizontal state to establish a stable connection with the floor door. The setting of the serial guide rod 6 can keep the upper and lower door clamps 5 in a horizontal state at all times, which is convenient for workers to use. Moreover, the serial guide rod 6 is slidably set in the through hole, and will not interfere with the overall support rod 1 when it is retracted or expanded.

[0041] The use principle and use process of this utility model:

[0042] When the user rotates the threaded shaft 41 by operating the hand wheel 43, due to the effect of the threaded engagement, the top end of the threaded shaft 41 will move up and down synchronously during the rotation process, thereby driving the lower hinge 2 to move up and down, changing the distance between the upper and lower hinge nodes, so as to control the overall retraction or expansion of the support rod 1, which can meet the limiting requirements of different opening and closing ranges of the floor door, and the door clamp 5 can be effectively connected to the floor door through the suction cup 54 to prevent the floor door from sliding in the opposite direction, and the friction between the suction cup 54 and the floor door can also fix the entire device on the floor door without occupying the ground working space.

[0043] In addition, since the rotating block 51 is rotatably connected to the end of the support rod 1, the door clamp 5 will sag under the action of gravity. When in use, the door clamp 5 needs to be rotated to a horizontal state to establish a stable connection with the floor door. The setting of the series guide rod 6 can keep the upper and lower door clamps 5 in a horizontal state at all times, which is convenient for workers to use. Moreover, the series guide rod 6 is slidably set in the through hole and will not interfere with the overall support rod 1 when it is retracted or expanded.

[0044] Finally, it should be noted that the above embodiments are merely examples for the purpose of illustrating the present invention and are not intended to limit the embodiments. Those skilled in the art will readily appreciate that other variations or modifications based on the above description are possible. It is not necessary and impossible to provide an exhaustive list of all possible embodiments. However, any obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. An elevator door limit device for elevator maintenance, characterized in that: include: Four support rods (1) are hinged to each other via hinges (2) to form hinge nodes in four directions: up, down, left, and right; A guide housing (3) is provided with a slide groove (31); A fastener (4) is threadedly connected to the guide housing (3), and its top end is rotatably connected to the lower hinged member (2); A door clamp (5) is rotatably mounted on the outer end of the support rod (1); The two ends of the upper hinge (2) are fixedly arranged on the top of the guide housing (3) through fixed connecting members (21), and the two ends of the lower hinge (2) are fixedly provided with clamping sliding members (22), and the clamping sliding members (22) are slidably arranged in the sliding groove (31).

2. The elevator door limiter for elevator maintenance according to claim 1, characterized in that: The hinge (2) comprises a connecting shaft (201) rotatably connected to the support rods (1) on both sides, anti-slip end pieces (202) are fixedly connected to both ends of the connecting shaft (201), and a middle sleeve (203) that is in close contact with the support rods (1) on both sides is movably sleeved in the middle of the connecting shaft (201).

3. The elevator door limiter for elevator maintenance according to claim 2, characterized in that: The inner end surface of the fixed connection member (21) is fixedly connected to the anti-slip end piece (202) of the upper hinge member (2), while the outer end surface thereof is fixedly connected to the inner wall of the guide housing (3).

4. The elevator door limiter for elevator maintenance according to claim 2, characterized in that: A clamping slot is provided in the middle of the clamping sliding member (22), which is slidably clamped in the sliding slot (31) through the clamping slot. The inner end surface of the clamping sliding member (22) is fixedly connected to the anti-slip end piece (202) of the lower hinged member (2).

5. The elevator door limiter for elevator maintenance according to claim 2, characterized in that: A threaded hole plate (32) is fixedly provided at the bottom of the guide housing (3), a cylindrical protrusion is welded to the lower end surface of the threaded hole plate (32), and a threaded hole communicating with the middle of the threaded hole plate (32) and the cylindrical protrusion is opened.

6. The elevator door limiter for elevator maintenance according to claim 5, characterized in that: The fastener (4) comprises a threaded shaft (41) threadedly connected to the threaded hole plate (32); the top end of the threaded shaft (41) is rotatably connected to a rotary joint (42); the top end of the rotary joint (42) is fixedly connected to the middle sleeve (203) of the lower hinged member (2); and the bottom end of the threaded shaft (41) is fixedly connected to an operating handwheel (43).

7. The elevator door limiter for elevator maintenance according to claim 1, characterized in that: The door clamp (5) comprises a rotating block (51) rotatably arranged at the end of the support rod (1), clamping plates (52) are fixedly arranged on both sides of the rotating block (51), a sliding shaft (53) is slidably arranged on the clamping plate (52), and a suction cup (54) is rotatably connected to the inner end of the sliding shaft (53), and the suction cup (54) is arranged on the inner side of the clamping plate (52).

8. The elevator door limiter for elevator maintenance according to claim 7, characterized in that: A serial guide rod (6) is fixedly connected to the rotating block (51) of the upper side door clamp (5), and a through hole is opened on the rotating block (51) of the lower side door clamp (5), and the serial guide rod (6) is slidably arranged in the through hole.

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