An elevator maintenance device

Abstract

The utility model discloses an elevator maintenance and repair equipment relates to elevator repair equipment technical field, including main support frame, the both sides symmetry of main support frame top end are equipped with side protection plate, the middle part symmetry of main support frame top surface is equipped with two guide rails, two guide rails are opposite and slide and are equipped with two movable plates, and the opposite surface middle part of two guide rails is equipped with the limit seat fixed in the top surface of main support frame, and the opposite surface of two limit seats all rotates and is equipped with the screw rod, the utility model discloses the cooperation of screw rod on side protection plate and second knob, protection block, need not complicated dismounting and can rotate second knob and push protection block and extend or retract, convenient accurate adjustment protection block and the contact distance of shaft lining, has improved the accuracy and efficiency of equipment and the adaptation of shaft lateral wall, finally solved the problem that the maintenance and repair equipment of current elevator is mostly fixed size design and is difficult to quickly adapt to different width shaft, improved the convenience and high efficiency of equipment adaptation different shaft specification.

Description

Technical Field

[0001] This utility model relates to the field of elevator maintenance equipment technology, and in particular to an elevator maintenance and repair equipment. Background Technology

[0002] With the acceleration of urbanization, elevators, as the core equipment of vertical transportation in high-rise buildings, are experiencing an increasing frequency of daily maintenance and troubleshooting. As a closed and narrow working environment, elevator shafts place stringent requirements on the stability, safety, adaptability, and durability of maintenance and repair equipment. The width of elevator shafts varies significantly due to differences in building design. However, most existing maintenance equipment is designed with fixed dimensions and lacks flexible adjustment structures. Although some adjustable equipment has moving parts, the adjustment process requires the use of tools such as wrenches to remove multiple bolts, which is cumbersome and time-consuming, making it difficult to quickly adapt to shafts of different widths. Therefore, improvements are needed to address these issues. Utility Model Content

[0003] The purpose of this utility model is to address the shortcomings of existing technologies by proposing an elevator maintenance and repair device.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: an elevator maintenance and repair device, comprising a main support frame, side protection plates symmetrically arranged on both sides of the top of the main support frame, two guide rails symmetrically arranged in the middle of the top surface of the main support frame, two movable plates sliding opposite each other on the two guide rails, a limiting seat fixed to the top surface of the main support frame at the middle of the opposite surfaces of the two guide rails offset from each other, a screw rod rotatably arranged on the opposite back surfaces of the two limiting seats, a first knob coaxially fixed to the opposite ends of the two screw rods, threaded holes corresponding to the two screw rods respectively opened at the lower ends of the two movable plates offset from each other, a protective block arranged on the outward side surface of each of the two side protection plates, a plurality of protective pulleys evenly arranged on the outward side surface of the protective block, and a locking assembly arranged on the opposite surfaces of the two movable plates.

[0005] Preferably, the top surface of the main support frame is provided with four rectangularly arranged connecting lugs on the periphery of the two guide rails.

[0006] Preferably, the locking assembly includes two protective housings respectively mounted on opposite surfaces of two movable plates and arranged facing each other. The lower end of the interior of one of the two protective housings is provided with a pawl rotatably mounted on the movable plate, and the ratchet adapted to the pawl is rotatably mounted inside the other protective housing.

[0007] Preferably, a rope release reel is coaxially fixed between the ratchet and the opposite face of the adjacent movable plate, and a rope hole for threading a safety rope is opened on the top surface of the outer wall of one of the two protective shells, and an installation rope is wound inside the rope release reel.

[0008] Preferably, one end of the rope release reel is coaxially fixed to a first motor installed inside the moving plate, one end of the pawl is coaxially fixed to a second motor installed on the outer wall of an adjacent moving plate, the moving plate has an arc-shaped limiting guide groove at one end of the pawl, one side of the pawl is provided with a guide block located in the arc-shaped limiting guide groove, and the moving plate is provided with a limiting block at the other end of the pawl.

[0009] Preferably, one end of the screw threaded through the side protection plate is rotatably mounted on the opposite surface of the protective block and the side protection plate, and the other end of the screw threaded through the side protection plate is coaxially fixed to a second knob. The lower end of the screw threaded through the side protection plate is provided with a guide rod fixed to the protective block, and one end of the guide rod passes through one side of the side protection plate inward.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model, through the cooperation of the screw-in screw on the side protection plate with the second knob and the protective block, allows the second knob to be rotated to push the protective block to extend or retract without complicated disassembly, which facilitates precise adjustment of the contact distance between the protective block and the inner wall of the shaft, improves the accuracy and efficiency of the equipment's adaptation to the shaft side wall, and thus enables the equipment to stably fit with the inner walls of shafts of different widths; ultimately, it solves the problem that existing elevator maintenance and repair equipment is mostly designed with fixed dimensions and cannot be quickly adapted to shafts of different widths, improving the convenience and efficiency of the equipment's adaptation to different shaft specifications. Attached Figure Description

[0011] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a first-view schematic diagram of the overall structure proposed in this utility model; Figure 2 This is a schematic diagram of the overall structure for removing the movable plate proposed in this utility model; Figure 3 This is a first-view schematic diagram of the overall structure of the locking component proposed in this utility model; Figure 4 This is a second-view schematic diagram of the overall structure of the locking component proposed in this utility model.

[0012] The numbers in the diagram are: 1. Main support frame; 2. Side protection plate; 3. Moving plate; 4. Protective block; 5. Protective pulley; 6. Connecting side lug; 7. Rope hole; 8. Guide rail; 9. Threaded hole; 10. Protective shell; 11. Pawl; 12. Ratchet; 13. Rope release reel. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0014] Example: See Figures 1 to 4This utility model discloses an elevator maintenance and repair device, comprising a main support frame 1, with side protection plates 2 symmetrically arranged on both sides of the top of the main support frame 1, two guide rails 8 symmetrically arranged in the middle of the top surface of the main support frame 1, and two movable plates 3 sliding opposite each other on the two guide rails 8, with limiting seats fixed to the top surface of the main support frame 1 at the middle of the opposite faces of the two guide rails 8, and screws rotatably arranged on the opposite faces of the two limiting seats, with a first knob coaxially fixed to the opposite ends of the two screws, and threaded holes 9 corresponding to the two screws respectively opening at the lower ends of the two movable plates 3, with protective blocks 4 arranged on the outward-facing side of each of the two side protection plates 2, and multiple protective pulleys 5 evenly arranged on the outward-facing side of the protective blocks 4, and the two movable plates 3... Locking components are provided on the opposite surfaces; the main support frame 1 is made of Q235 steel plate, which can improve the overall structural strength and load-bearing capacity, stably support the weight of various equipment components and maintenance personnel, and prevent deformation and damage during operation; the movable plate 3 is made of aluminum alloy, which is lightweight and high-strength, which can reduce the overall weight of the equipment and reduce the load on the external cable laying device; the protective block 4 is made of rubber, which has good elasticity and cushioning performance, reducing the impact of collision between the equipment and the inner wall of the shaft and preventing scratches; the protective pulley 5 is made of nylon, which has a low coefficient of friction and is wear-resistant, reducing the frictional resistance during equipment lifting and lowering, making lifting and lowering more stable and extending service life; through the combination of the above structures and materials, the initial support and position adjustment of the equipment in the elevator shaft can be achieved. The foundation section provides structural support for subsequent equipment movement and safety protection, while further enhancing the equipment's durability and adaptability. These elements constitute the basic framework of the device, laying the structural foundation for the realization of various subsequent functions. The top surface of the main support frame 1 has four rectangularly arranged connecting lugs 6 located around the two guide rails 8. The main support frame 1 is made of Q235 steel plate, and its top connecting lugs 6 are integrally formed with the main support frame 1, possessing high structural strength. The four rectangularly arranged connecting lugs 6 can be firmly connected to the external load-bearing rope, providing a stable connection point for the equipment to cooperate with the external cable-laying device, ensuring balanced force during lifting and lowering, and preventing tilting or damage due to excessive force at a single point. To further improve the stability and safety of the equipment during lifting, the locking assembly includes two protective housings 10 mounted on opposite surfaces of two movable plates 3. One of the protective housings 10 has a pawl 11 rotatably mounted on the movable plate 3 at its lower interior. The other protective housing 10 has a ratchet 12 rotatably mounted on the pawl 11. Both the pawl 11 and ratchet 12 are made of 45# steel, which is hard and strong, able to withstand the impact during locking, preventing deformation and damage due to excessive force, and ensuring reliable locking function. The movable plate 3 is made of aluminum alloy, which is lightweight and strong, and can stably support the protective housing 10, pawl 11, and ratchet 12.The protective housing 10 protects the pawl 11 and ratchet 12, preventing external impurities from affecting their engagement. The matching design of the pawl 11 and ratchet 12, combined with high-strength materials, enables a stable one-way locking function. This provides core structural support for emergency protection in case of rope breakage, ensuring the equipment can quickly and reliably lock in emergencies, preventing further falls.

[0015] In this invention, a rope release reel 13 is coaxially fixed between the ratchet 12 and the opposite face of the adjacent movable plate 3. One of the two protective shells 10 has a rope hole 7 on its top outer wall for threading a safety rope. An installation rope is wound inside the rope release reel 13. The rope release reel 13 is made of 45# steel, which is high-strength and wear-resistant, and can stably wind the installation rope and withstand rope tension, preventing deformation over long-term use. The movable plate 3 is made of aluminum alloy, which can stably support the rope release reel 13. The rope release reel 13 is coaxially fixed to the ratchet 12, allowing the installation rope to be released and retracted with the rotation of the ratchet 12. The rope hole 7 provides a channel for threading the safety rope. The combination of the installation rope and the safety rope with the high-strength rope release reel 13 forms a stable safety protection link, providing protection for maintenance personnel. The system provides dual safety guarantees for personnel and equipment, preventing accidents caused by a single rope failure or damage to the rope reel 13. A first motor is coaxially fixed to one end of the rope reel 13, installed inside the moving plate 3. A second motor is coaxially fixed to one end of the pawl 11, installed on the outer wall of the adjacent moving plate 3. The moving plate 3 has an arc-shaped limiting guide groove at one end of the pawl 11, and a guide block located within the arc-shaped limiting guide groove is provided on one side of the pawl 11. A limiting block is provided at the other end of the moving plate 3. Both the first and second motors are HG series motors. The first motor provides stable power output to meet the power requirements of the rope reel 13 when retracting the rope, and is wear-resistant, has a long service life, and is suitable for the working environment inside the elevator shaft. The second motor is small in size and quiet. The device features a high-speed, rapid-drive pawl 11 to lock, ensuring timely prevention of equipment fall in case of rope breakage. The moving plate 3, made of aluminum alloy, allows for stable mounting of the first and second motors. The arc-shaped limit guide groove and guide block restrict the rotation range of the pawl 11, preventing it from jamming or disengaging from the ratchet 12. The limit block further restricts the pawl 11. Combining the advantages of the motor model and structural design, the first motor ensures orderly rope recovery during equipment return, while the second motor ensures rapid locking response, ensuring stable and reliable operation of the locking assembly. One end of the side protection plate 2, equipped with a screw, is rotatably mounted on the opposite surface of the protective block 4 and the side protection plate 2. The other end of the screw is coaxially fixed to a second knob. The lower end of the screw is equipped with a guide rod fixed to the protective block 4, one end of which passes through the inward side of the side protection plate 2. The protective block 4 is made of rubber, which has good elasticity and cushioning performance. The screw is made of 45# steel, which is high in strength and wear-resistant, and can stably transmit the rotational force of the second knob. Rotating the second knob can drive the screw to move, thereby pushing the protective block 4 to extend or retract. When the rubber protective block 4 comes into contact with the inner wall of the shaft, it can reduce the impact of collision. The 45# steel screw ensures that the adjustment process is stable and reliable, realizing the adaptation adjustment between the protective block 4 and the inner wall of the elevator shaft. This ensures that equipment in shafts of different widths can be effectively laterally supported, improves the stability of the equipment in the shaft, and avoids horizontal deviation during the lifting and lowering of the equipment.

[0016] Working Principle: When using this utility model, the first step is to connect the mobile power. The operator securely connects one end of the external load-bearing rope to the four connecting lugs 6 on the top surface of the main support frame 1. The four connecting lugs 6 are arranged in a rectangle to evenly distribute the load-bearing pressure and prevent breakage due to excessive force on a single point. Then, the other end of the external load-bearing rope is connected and fixed to an external cable-laying device such as a winch outside the elevator shaft. This step, through the cooperation of the connecting lugs 6, the external load-bearing rope, and the cable-laying device, provides the power foundation for the subsequent descent of the equipment along the elevator shaft. At the same time, the rectangular arrangement of the connecting lugs 6 ensures that the force is balanced during the descent of the equipment and prevents the equipment from tilting due to a shift in the center of gravity. After the rope connection is completed, the safety rope and installation rope are fixed. First, one end of the installation rope wound on the rope reel 13 inside the protective shell 10 is securely connected to one end of the safety rope to ensure that the two are synchronized. Then, the operator passes the other end of the safety rope through the rope hole 7 on the top surface of the outer wall of the protective shell 10 and stretches the safety rope to the external fixed column or the stable structure on the top of the car inside the elevator shaft. The end of the safety rope is then wrapped around... The installation rope is fixed to the external fixed column. In this way, the connection between the installation rope and the safety rope, and the fixation between the safety rope and the external fixed column, form a safety protection. This connection provides initial safety assurance during subsequent equipment descent and maintenance operations, avoiding safety accidents caused by the failure of a single load-bearing rope. After the installation rope is fixed, the adaptation adjustment between the equipment and the side wall of the elevator shaft begins. Rotate the second knob on the side protection plate 2, which drives the screw to move axially along the hole in the side protection plate 2, thereby pushing the protective block 4 to extend away from the side protection plate 2. Continue to adjust the second knob until the protective pulley 5 on the outside of the protective block 4 is in close contact with the inner wall of the elevator shaft. It is advisable that the protective pulley 5 can roll flexibly without obvious looseness. This fit not only provides guidance for the subsequent descent of the equipment through the rolling characteristics of the protective pulley 5, avoiding direct friction and scratches between the equipment and the inner wall of the shaft during the descent, but also limits the horizontal deviation of the equipment through the supporting role of the protective block 4. At the same time, the extension length of the protective block 4 can be flexibly adjusted according to different shaft widths to ensure that the equipment is adapted to different specifications of elevator shafts.Next, the position of the moving plate 3 is adjusted. The initial adjustment is the pre-descent merging state. Based on the width of the maintenance area in the elevator shaft and the requirements of the locking components, before the equipment descends, the operator will turn the first knob at the opposite ends of the two screws, driving the screws to rotate around the limit seat. Since the threaded hole 9 at the lower end of the moving plate 3 is compatible with the screws, and the moving plate 3 is slidably mounted on the guide rail 8, turning the first knob clockwise will cause the two moving plates 3 to slide towards the center along the guide rail 8 until the two moving plates 3 are in a merged state. At this point, the locking components on the opposite surfaces of the two moving plates 3, including the protective housing 10, pawl 11, and ratchet 12, are precisely aligned. No further adjustment is needed to ensure normal locking function, facilitating equipment descent and subsequent safety. With full protective measures in place, if adjustments to the tightness of the merging are needed, the first knob can be fine-tuned to ensure that the moving plate 3 is secure after merging without affecting the overall force balance of the equipment. Activate the external cable release device to release the load-bearing rope and lower the equipment along the shaft. Once the equipment reaches the designated maintenance height, if the operator notices a tilt in the main support frame 1, the position of the moving plate 3 can be adjusted by turning the first knob on the corresponding side. The moving plate 3 on the higher side of the main support frame 1 will slide outward to increase the support width, while the moving plate 3 on the lower side will slide inward to decrease the support width. By adjusting the relative positions of the two moving plates 3, the force on the main support frame 1 is balanced, resolving the equipment tilting problem caused by uneven shaft floor. During the leveling process, the moving plates 3 will only undergo minor position adjustments, always maintaining a tight fit. The system is in a state of readiness to ensure the locking components remain in normal working order and do not affect safety protection functions. Finally, during the locking component protection phase, as the equipment descends, the rope release reel 13 passively releases the installation rope synchronously with the descent. This process does not require the first motor to rotate; it relies on the gravity of the descending equipment and the traction of the external rope release device to naturally extend the installation rope. The safety rope unfolds synchronously with the installation rope, requiring no additional power. When returning after maintenance, the first motor is started and reversed, driving the rope release reel 13 to rotate coaxially in the opposite direction, retracting the unfolded installation rope and winding it onto the rope release reel 13. The safety rope retracts synchronously with the installation rope, achieving rope retrieval during the equipment's ascent and preventing the installation rope and safety rope from becoming tangled and affecting subsequent use. Simultaneously... The guide block on one side of the pawl 11 slides within the arc-shaped limiting guide groove of the moving plate 3, cooperating with the limiting block on the moving plate 3 to restrict the rotation range of the pawl 11, preventing the pawl 11 from jamming or disengaging from the ratchet 12. Since the moving plate 3 is always in a closed state, the pawl 11 and ratchet 12 remain properly aligned, ensuring the stability of the locking assembly during rope deployment and retraction. If the load-bearing rope breaks during descent or operation, the second motor will immediately start, driving the pawl 11 to rotate around the rotation point, causing the pawl 11 to quickly engage in the tooth groove of the ratchet 12. Utilizing the one-way locking characteristic of the ratchet 12 and pawl 11, the ratchet 12 is prevented from rotating in the opposite direction, thereby limiting the release of the installation rope by the rope reel 13, achieving emergency locking of the safety rope. At this point, the device is in use.

[0017] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An elevator maintenance and repair device, comprising a main support frame (1), characterized in that: The main support frame (1) has symmetrical side protection plates (2) on both sides of its top end. The main support frame (1) has two guide rails (8) symmetrically arranged in the middle of its top surface. Two movable plates (3) are slidably arranged on the two guide rails (8). The two guide rails (8) have a limiting seat fixed to the top surface of the main support frame (1) at the middle of their opposite sides. The two limiting seats have screws rotatably arranged on their opposite sides. The opposite ends of the two screws are coaxially fixed with a first knob. The lower ends of the two movable plates (3) have threaded holes (9) that are respectively opened to pass through the two screws. The two side protection plates (2) have protective blocks (4) on their outward side surfaces. The protective blocks (4) have multiple protective pulleys (5) evenly arranged on their outward side surfaces. The two movable plates (3) have locking components on their opposite sides.

2. The elevator maintenance and repair equipment according to claim 1, characterized in that: The top surface of the main support frame (1) is provided with four rectangular connecting lugs (6) arranged around the two guide rails (8).

3. The elevator maintenance and repair equipment according to claim 2, characterized in that: The locking assembly includes two protective housings (10) respectively mounted on opposite surfaces of two movable plates (3). One of the protective housings (10) has a pawl (11) rotatably mounted on the movable plate (3) at its lower end. The other protective housing (10) has a ratchet (12) adapted to the pawl (11) rotatably mounted inside it.

4. The elevator maintenance and repair equipment according to claim 3, characterized in that: A rope release reel (13) is coaxially fixed between the ratchet (12) and the opposite face of the adjacent movable plate (3). One of the two protective shells (10) has a rope hole (7) on the top surface of its outer wall for threading a safety rope. An installation rope is wound inside the rope release reel (13).

5. The elevator maintenance and repair equipment according to claim 4, characterized in that: One end of the rope release disc (13) is coaxially fixed to a first motor installed inside the moving plate (3), and one end of the pawl (11) is coaxially fixed to a second motor installed on the outer wall of the adjacent moving plate (3). The moving plate (3) has an arc-shaped limiting guide groove at one end of the pawl (11), and a guide block located in the arc-shaped limiting guide groove is provided on one side of the pawl (11). The moving plate (3) has a limiting block at the other end of the pawl (11).

6. The elevator maintenance and repair equipment according to claim 5, characterized in that: The side protection plate (2) has a screw threaded through one end, which is rotatably set on the opposite surface of the protective block (4) and the side protection plate (2). The other end of the screw thread is coaxially fixed with a second knob. The lower end of the screw thread is provided with a guide rod fixed on the protective block (4). One end of the guide rod passes through the side of the side protection plate (2) inward.

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