Crawling ladder device for fireman elevator car

Abstract

The utility model belongs to the field of crawling ladders, and provides a fireman elevator car crawling ladder device which comprises a first crawling ladder, a limiting groove formed in the first crawling ladder, a second crawling ladder connected into the limiting groove in a sliding mode and a plurality of triangular clamping grooves formed in the front end face of the second crawling ladder and distributed symmetrically. A fixing assembly for limiting the second ladder stand is arranged on the front end surface of the first ladder stand; when the second crawling ladder is stored, the push rod can be driven by pressing the two push blocks, the position of the push rod corresponds to the lower portion of one side face of the rotating plate, the spring can be extruded after the push blocks are pushed, the rotating plate can be driven to rotate after the push rod moves, and the connecting block can be driven to rotate after the rotating plate rotates. The triangular clamping block can be moved out of the triangular clamping groove by rotating the connecting block, so that the effect that the triangular clamping block limits the second ladder stand can be eliminated, and at the moment, the second ladder stand can slide downwards in the limiting groove in the first ladder stand.

Description

Technical Field

[0001] The utility model belongs to the field of ladders, and particularly relates to a fireman elevator car ladder device. Background Art

[0002] An elevator car is one of the main components of an elevator and is also an enclosed space for passengers or goods to move up and down in the elevator. To ensure the normal operation of the elevator car and the safety of passengers, regular maintenance and servicing are necessary, which includes checking the operating conditions of the elevator, cleaning the interior of the car, replacing worn parts, etc. When the elevator breaks down and needs to be repaired, firemen generally climb above the car through a ladder to troubleshoot faults of parts.

[0003] In a Chinese utility model patent with the publication number CN2033994336U, a telescopic ladder is disclosed, which includes ladder steps. Each ladder step includes two vertical pipes, a cross bar, and two vertical pipe connecting sleeves. The two ends of the cross bar are respectively connected to the upper ends of the two vertical pipes, and the two vertical pipe connecting sleeves are respectively sleeved on the two vertical pipes. In this utility model, the upper and lower adjacent ladder steps are connected by positioning members. The overall structure is simple, easy to implement, and has a low cost. When not in use, the positioning members can be removed, and then the vertical pipes of the upper ladder step can be inserted into the vertical pipes of the lower ladder step, and the overall volume becomes smaller, saving floor space.

[0004] Regarding the above related technologies, the inventor believes that there are the following defects: when using this telescopic ladder, the positioning members need to be operated multiple times to achieve the effect of storing or unfolding the device, which is not convenient for quickly unfolding or storing the telescopic ladder and is not convenient to use.

[0005] Therefore, those skilled in the art have proposed a fireman elevator car ladder device to solve the problems raised in the background art. Content of the Utility Model

[0006] In order to solve the above technical problems, the utility model provides a fireman elevator car ladder device to solve the problem that when using the existing telescopic ladder, the positioning members need to be operated multiple times to achieve the effect of storing or unfolding the device, which is not convenient for quickly unfolding or storing the telescopic ladder and is not convenient to use.

[0007] A fireman elevator car ladder device includes a first ladder, a limiting groove opened in the first ladder, a second ladder slidably connected in the limiting groove, and a plurality of symmetrically distributed triangular card slots opened on the front end face of the second ladder. A fixing component for limiting the second ladder is arranged on the front end face of the first ladder, a limiting component for limiting the second ladder on the top of the elevator car is arranged above the rear end face of the second ladder, and a lifting component for lifting the height of a tool bag is arranged on one side of the second ladder;

[0008] The fixing component includes two symmetrically arranged mounting grooves formed in the limiting groove, a rotating rod rotatably connected in the limiting groove, a rotating plate fixedly sleeved on the surface of the rotating rod, a connecting block fixedly connected to one side of the rotating plate, a triangular clamping block fixedly connected to one end of the connecting block, and a push rod slidably connected in the side wall of the first ladder.

[0009] Preferably, one end of the push rod contacts the other side of the rotating plate, and the triangular clamping block is located in one of the triangular clamping grooves.

[0010] Preferably, a push block is fixedly connected to one end of the push rod, a spring is sleeved on the surface of the push rod, one end of the spring is fixedly connected to the front end face of the first ladder, and the other end of the spring is fixedly connected to one side of the push block.

[0011] Preferably, a torsion spring is sleeved on the surface of the rotating rod, and torsion springs are sleeved on the surfaces of both rotating rods. One end of the torsion spring is fixedly connected to one side of the mounting groove, and the other end of the torsion spring is fixedly connected to one end of the rotating plate.

[0012] Through the above technical solution, during use, by sliding the second ladder upward in the first ladder, when the second ladder slides upward, the triangular clamping grooves on its surface will sequentially pass over the surface of the triangular clamping block. After the second ladder passes over the surface of the triangular clamping block and continues to move upward, the triangular clamping groove can squeeze the connecting block, thereby driving the rotating plate to rotate by using the connecting block. At this time, the torsion spring is rotated, and the triangular clamping block disengages from the triangular clamping groove. After adjusting the second ladder to a suitable position in the first ladder, slightly sliding the second ladder up and down can engage the triangular clamping groove near the triangular clamping block on the second ladder with the triangular clamping block. The triangular clamping block can limit the triangular clamping groove, thereby achieving the effect of extending the use height of the device. When the second ladder needs to be stored, by pressing the two push blocks, the push rod can be driven. The position of the push rod corresponds to the lower part of one side surface of the rotating plate. After pushing the push block, the spring can be squeezed. After the push rod moves, it can drive the rotating plate to rotate. After the rotating plate rotates, it can drive the connecting block to rotate. The rotation of the connecting block can move the triangular clamping block out of the triangular clamping groove, thereby achieving the effect of canceling the limit of the triangular clamping block on the second ladder. At this time, the second ladder will slide downward in the limiting groove in the first ladder. When the lower end of the second ladder contacts the inner bottom surface of the limiting groove, the effect of storing the second ladder can be achieved. Compared with the existing multi-stage stepped telescopic ladder, the device can achieve the effect of convenient storage, reduce the time required for storage, and is more convenient to use.

[0013] Preferably, the limiting component includes two symmetrically arranged mounting blocks fixedly connected to the upper part of the rear end face of the second ladder, a rotating shaft rotatably connected between the two mounting blocks, a clamping plate fixedly sleeved on the surface of the rotating shaft, threaded holes formed in both side walls of the clamping plate, and bolts threadedly connected in the mounting blocks.

[0014] Preferably, the lifting component includes a roller rotatably connected to one side of the second ladder, a storage rope tied to the surface of the roller, and a hook tied to the lower end of the storage rope.

[0015] Preferably, one end of the roller is fixedly connected with a handle, and a hook is fixedly connected to one side of the second ladder.

[0016] Through the above technical solution, during use, by rotating the clamping plate, the threaded hole on the clamping plate can be aligned with the bolt on the mounting block, and the bolt can be screwed into the threaded hole, thereby completing the limitation of the clamping plate. The clamping plate is placed on the top of the car, thereby achieving the effect of supporting the second ladder and improving the stability of the device during use. By rotating the handle, the storage rope on the roller can be lowered. Then, the tool bag to be used is placed on the hook on the storage rope, and by rotating the handle again, the storage rope can be wound around the roller, thereby achieving the effect of increasing the height of the tool bag. Hanging the tool bag on the hook can facilitate the use of the tools in the tool bag.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] 1. In the utility model, the second ladder slides upward in the first ladder. When the second ladder slides upward, the triangular card slots on its surface will sequentially pass over the surface of the triangular card blocks. After adjusting the second ladder to a suitable position in the first ladder, slightly sliding the second ladder up and down can make the triangular card slots near the triangular card blocks on the second ladder be stuck on the triangular card blocks. The limitation of the triangular card slots can be completed through the triangular card blocks. When storing the second ladder, by pressing two push blocks, the push rod can be driven. The position of the push rod corresponds to the lower part of one side surface of the rotating plate. After the push rod moves, the rotating plate can be driven to rotate. After the rotating plate rotates, the connecting block can be driven to rotate. The rotation of the connecting block can move the triangular card block out of the triangular card slot, thereby achieving the effect of canceling the limitation of the triangular card block on the second ladder. At this time, the second ladder will slide downward in the limiting groove in the first ladder. When the lower end of the second ladder contacts the inner bottom surface of the limiting groove, the effect of storing the second ladder can be achieved. Compared with the existing multi-stage stepped telescopic ladder, the device of the utility model can achieve the effect of convenient storage, reduce the time required for storage, and is more convenient to use.

[0019] 2. In the utility model, by rotating the clamping plate, the threaded hole on the clamping plate can be aligned with the bolt on the mounting block, and the bolt can be screwed into the threaded hole, thereby completing the limitation of the clamping plate. The clamping plate is placed on the top of the car, thereby achieving the effect of supporting the second ladder and improving the stability of the device during use. By rotating the handle, the storage rope on the roller can be lowered. Then, the tool bag to be used is placed on the hook on the storage rope, and by rotating the handle again, the storage rope can be wound around the roller, thereby achieving the effect of increasing the height of the tool bag. Hanging the tool bag on the hook can facilitate the use of the tools in the tool bag. Brief Description of the Drawings

[0020] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0021] Figure 2 It is a schematic side view structure diagram of the present utility model;

[0022] Figure 3 is Figure 2 An enlarged structure diagram of part A in

[0023] Figure 4 It is a schematic diagram of the bottom-up three-dimensional structure of the present utility model;

[0024] Figure 5 It is a schematic diagram of the structure of the rotating plate and the connecting block.

[0025] In the figure:

[0026] 1. First ladder; 101. Limit groove; 102. Installation groove; 103. Rotating rod; 1031. Torsion spring; 104. Rotating plate; 105. Connecting block; 106. Triangular clamping block; 107. Push rod; 108. Push block; 109. Spring; 2. Second ladder; 201. Triangular clamping groove; 3. Installation block; 301. Rotating shaft; 302. Clamping plate; 303. Threaded hole; 304. Bolt; 4. Rotating roller; 401. Receiving rope; 402. Handle; 403. Hook. Specific Embodiments

[0027] The following further describes in detail the embodiments of the present utility model in conjunction with the drawings and examples. The following examples are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0028] Embodiment 1: As shown in Figure 1 to Figure 5 shown: The present utility model provides a firefighter elevator car ladder device, including a first ladder 1, a limit groove 101 opened in the first ladder 1, a second ladder 2 slidably connected in the limit groove 101, and a plurality of symmetrically distributed triangular clamping grooves 201 opened on the front end face of the second ladder 2. A fixing component for limiting the second ladder 2 is provided on the front end face of the first ladder 1. A limiting component for limiting the second ladder 2 on the top of the elevator car is provided above the rear end face of the second ladder 2. A lifting component for lifting the height of the tool bag is provided on one side of the second ladder 2;

[0029] The fixing component includes two symmetrically arranged mounting grooves 102 formed in the limiting groove 101, a rotating rod 103 rotatably connected in the limiting groove 101, a rotating plate 104 fixedly sleeved on the surface of the rotating rod 103, a connecting block 105 fixedly connected to one side of the rotating plate 104, a triangular clamping block 106 fixedly connected to one end of the connecting block 105, and a push rod 107 slidably connected in the side wall of the first ladder 1.

[0030] One end of the push rod 107 contacts the other side of the rotating plate 104, and the triangular clamping block 106 is located in one of the triangular clamping grooves 201.

[0031] One end of the push rod 107 is fixedly connected with a push block 108. A spring 109 is sleeved on the surface of the push rod 107. One end of the spring 109 is fixedly connected with the front end face of the first ladder 1, and the other end of the spring 109 is fixedly connected with one side of the push block 108.

[0032] A torsion spring 1031 is sleeved on the surface of the rotating rod 103, and torsion springs 1031 are sleeved on the surfaces of both rotating rods 103. One end of the torsion spring 1031 is fixedly connected with one side of the mounting groove 102, and the other end of the torsion spring 1031 is fixedly connected with one end of the rotating plate 104.

[0033] As can be seen from the above, during use, the application scenario of this device is that firefighters climb to the top of the elevator car using this device after unfolding it to maintain the parts on the elevator car. The specific operation is as follows: During use, by sliding the second ladder 2 upward in the first ladder 1, when the second ladder 2 slides upward, the triangular clamping grooves 201 on its surface will sequentially pass over the surface of the triangular clamping block 106. After the second ladder 2 passes over the surface of the triangular clamping block 106 and continues to move upward, the triangular clamping groove 201 can squeeze the connecting block 105, thereby driving the rotating plate 104 to rotate by using the connecting block 105. At this time, the torsion spring 1031 is rotated, and the triangular clamping block 106 disengages from the triangular clamping groove 201. After adjusting the second ladder 2 to a suitable position in the first ladder 1, gently sliding the second ladder 2 up and down can engage the triangular clamping groove 201 near the triangular clamping block 106 on the second ladder 2 with the triangular clamping block 106. The limit of the triangular clamping groove 201 can be completed through the triangular clamping block 106, thereby achieving the effect of extending the use height of this device;

[0034] When it is necessary to store the second ladder 2, by pressing two push blocks 108, the push rod 107 can be driven. The position of the push rod 107 corresponds to the lower part of one side surface of the rotating plate 104. After pushing the push blocks 108, the spring 109 can be squeezed. After the push rod 107 moves, the rotating plate 104 can be driven to rotate. After the rotating plate 104 rotates, the connecting block 105 can be driven to rotate. When the connecting block 105 rotates, the triangular clamping block 106 can be moved out of the triangular clamping groove 201, so as to cancel the limit effect of the triangular clamping block 106 on the second ladder 2. At this time, the second ladder 2 will slide downward in the limiting groove 101 in the first ladder 1. When the lower end of the second ladder 2 contacts the inner bottom surface of the limiting groove 101, the effect of storing the second ladder 2 can be achieved. Compared with the existing multi-stage stepped telescopic ladder, the device can achieve the effect of convenient storage, reduce the time required for storage, and is more convenient to use.

[0035] Embodiment 2: On the basis of Embodiment 1, the limiting component includes two symmetrically arranged mounting blocks 3 fixedly connected to the upper part of the rear end surface of the second ladder 2, a rotating shaft 301 rotatably connected between the two mounting blocks 3, a clamping plate 302 fixedly sleeved on the surface of the rotating shaft 301, threaded holes 303 opened on both side walls of the clamping plate 302, and bolts 304 threadedly connected to the mounting blocks 3.

[0036] The lifting component includes a rotating roller 4 rotatably connected to one side of the second ladder 2, a storage rope 401 tied to the surface of the rotating roller 4, and a hook tied to the lower end of the storage rope 401.

[0037] One end of the rotating roller 4 is fixedly connected with a handle 402, and one side of the second ladder 2 is fixedly connected with a hook 403.

[0038] As can be seen from the above, when in use, by rotating the clamping plate 302, the threaded hole 303 on the clamping plate 302 can be aligned with the bolt 304 on the mounting block 3, and the bolt 304 can be screwed into the threaded hole 303 to complete the limit of the clamping plate 302. The clamping plate 302 is placed on the top of the car to support the second ladder 2, so as to improve the stability of the device during use. By rotating the handle 402, the storage rope 401 on the rotating roller 4 can be lowered. Then, the tool bag to be used is placed on the hook on the storage rope 401. By rotating the handle 402 again, the storage rope 401 can be wound around the rotating roller 4 to raise the height of the tool bag. Hanging the tool bag on the hook 403 can facilitate the use of the tools in the tool bag.

[0039] The embodiments of the present invention are given for the purpose of illustration and description. Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A climbing ladder device for a firefighter elevator car, characterized in that: It includes a first ladder (1), a limiting groove (101) opened in the first ladder (1), a second ladder (2) slidably connected in the limiting groove (101), and a number of symmetrically distributed triangular card slots (201) opened on the front end face of the second ladder (2). A fixing component for limiting the second ladder (2) is arranged on the front end face of the first ladder (1). A limiting component for limiting the second ladder (2) on the top of the elevator car is arranged above the rear end face of the second ladder (2). A lifting component for lifting the height of the tool bag is arranged on one side of the second ladder (2). The fixing component includes two symmetrically arranged mounting grooves (102) opened in the limiting groove (101), a rotating rod (103) rotatably connected in the limiting groove (101), a rotating plate (104) fixedly sleeved on the surface of the rotating rod (103), a connecting block (105) fixedly connected to one side of the rotating plate (104), a triangular clamping block (106) fixedly connected to one end of the connecting block (105), and a push rod (107) slidably connected in the side wall of the first ladder (1).

2. The firefighter elevator car ladder climbing device according to claim 1, wherein: One end of the push rod (107) contacts the other side of the rotating plate (104), and the triangular clamping block (106) is located in one of the triangular card slots (201).

3. The climbing ladder device for a firefighter elevator car according to claim 2, characterized in that: One end of the push rod (107) is fixedly connected with a push block (108). A spring (109) is sleeved on the surface of the push rod (107). One end of the spring (109) is fixedly connected with the front end face of the first ladder (1), and the other end of the spring (109) is fixedly connected with one side of the push block (108).

4. The climbing ladder device for a fireman's elevator car according to claim 3, characterized in that: A torsion spring (1031) is sleeved on the surface of the rotating rod (103), and torsion springs (1031) are sleeved on the surfaces of both rotating rods (103). One end of the torsion spring (1031) is fixedly connected with one side of the mounting groove (102), and the other end of the torsion spring (1031) is fixedly connected with one end of the rotating plate (104).

5. The climbing ladder device for a firefighter elevator car according to claim 4, characterized in that: The limiting component includes two symmetrically arranged mounting blocks (3) fixedly connected above the rear end face of the second ladder (2), a rotating shaft (301) rotatably connected between the two mounting blocks (3), a clamping plate (302) fixedly sleeved on the surface of the rotating shaft (301), threaded holes (303) opened on both side walls of the clamping plate (302), and bolts (304) threadedly connected in the mounting blocks (3).

6. The climbing ladder device for a firefighter elevator car according to claim 5, wherein: The lifting component includes a rotating roller (4) rotatably connected to one side of the second ladder (2), a receiving rope (401) tied to the surface of the rotating roller (4), and a hook tied to the lower end of the receiving rope (401).

7. The climbing ladder device for a firefighter elevator car according to claim 6, characterized in that: One end of the rotating roller (4) is fixedly connected with a handle (402), and a hook (403) is fixedly connected to one side of the second ladder (2).

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