Equipment maintenance device

Abstract

The invention relates to the technical field of thermal power plant equipment maintenance, in particular to an equipment maintenance device which comprises a carrier, a first lifting mechanism, a position adjusting mechanism, an operation table, a second lifting mechanism and a bearing assembly. The carrier can move on the ground along a set route. The first lifting mechanism is installed on the carrier. The position adjusting mechanism is installed on the top of the first lifting mechanism. The operation table is installed on the top face of the position adjusting mechanism. The first lifting mechanism drives the position adjusting mechanism and the operation table to move up and down so that the position adjusting mechanism and the operation table can be lifted to a certain height. The position adjusting mechanism drives the operation table to move and / or rotate in the plane where the position adjusting mechanism is located. The second lifting mechanism is installed on the carrier. The bearing assembly is used for bearing tools and can be installed on the operation table and the second lifting mechanism in a reciprocating motion mode. And on the whole, the flexibility of the maintenance work is greatly improved, and the maintenance precision and the maintenance efficiency can be guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of thermal power plant equipment maintenance, and in particular to an equipment maintenance device. Background Art

[0002] Existing equipment maintenance devices generally use a lifting platform to lift maintenance personnel to a certain height to perform maintenance on thermal power plant equipment. After the maintenance personnel are lifted to a certain height, it is generally difficult to fine-tune the position of the operating table, resulting in inflexible maintenance work and seriously affecting maintenance efficiency. Summary of the invention

[0003] The invention provides an equipment maintenance device, which is used to solve the problem of how to improve the flexibility of maintenance work.

[0004] The present invention provides an equipment maintenance device, comprising: Vehicle, capable of movement; A first lifting mechanism is installed on the carrier; A position adjustment mechanism is installed on the top of the first lifting mechanism; An operating table is installed on the top surface of the position adjustment mechanism; the position adjustment mechanism drives the operating table to move and / or rotate within the surface where the position adjustment mechanism is located; the first lifting mechanism drives the position adjustment mechanism and the operating table to move up and down; A second lifting mechanism is installed on the carrier; The bearing assembly is used for bearing tools and is reciprocatingly mounted on the operating platform and the second lifting mechanism.

[0005] In some embodiments, the position adjustment mechanism includes: A static platform, mounted on the top surface of the first lifting mechanism; A first movable seat is movably mounted on the top surface of the static platform in a horizontal plane; There are four first hydraulic cylinders, the cylinder barrels of which are respectively hinged at the four corners of the static platform, and the output shafts are respectively hinged at the four corners of the first moving seat; A first rotating seat is rotatably mounted on the top surface of the first moving seat via a rotating shaft; There are two second hydraulic cylinders, with axes arranged at 90 degrees, cylinder barrels hinged to the top surface of the first movable seat respectively, and output shafts hinged to the outer wall of the rotating shaft respectively.

[0006] In some embodiments, the position adjustment mechanism further comprises: The balls are multiple and are installed on the top surface of the static platform in an array and are respectively in contact with the bottom surface of the first movable seat.

[0007] In some of the embodiments, the first lifting mechanism is a scissor-type hydraulic lift.

[0008] In some of the embodiments, guardrails are provided on all sides of the operating table, an embedded processor and a scanner are installed on one side, and a slide rail is provided on the top surface; the operating table can be slidably connected to the bearing assembly through the slide rail.

[0009] In some embodiments, the second lifting mechanism includes: A gantry, the bottom end of which is mounted on the top surface of the carrier; The first lifting seat is installed in the door frame so as to be movable up and down, and a slide rail is arranged on the top surface; the first lifting seat can be slidably connected with the bearing assembly through the slide rail; The lifting screw rod is vertically arranged, with the top end rotatably connected to the top end of the door frame, and the bottom end rotatably connected to the bottom end of the door frame; A nut, screwed onto the lifting screw rod and fixedly connected to the first lifting seat; The driving motor is installed on the top of the door frame, and the output shaft is fixedly connected with the top of the lifting screw rod.

[0010] In some embodiments, the carrier assembly includes: The second movable seat has a bottom surface provided with a slide groove adapted to the slide rail; A second lifting seat is installed on the second moving seat so as to be movable up and down; A second rotating seat is rotatably mounted on the top of the second lifting seat; The tool storage part is detachably mounted on the outer periphery of the second rotating seat.

[0011] In some of the embodiments, a guide rod and a limiting rack are provided at the bottom of the second lifting seat; The second movable seat is formed with a first guide groove for inserting the guide rod and a second guide groove for inserting the limiting rack; a limiting claw is arranged in the second guide groove; the limiting claw can rotate to abut against the limiting rack or disengage from the limiting rack, thereby limiting the up and down movement of the second lifting seat or releasing the restriction on the second lifting seat.

[0012] In some embodiments, two slots are provided on one side of the second rotating seat; Tool Organizer Includes: A connecting belt is wound around the outer circumference of the second rotating seat; There are two plug-in boards, which are inserted into the two slots in a one-to-one correspondence; one of the plug-in boards is fixedly connected to one end of the connecting belt, and the other plug-in board is fixedly connected to the other end of the connecting belt; There are multiple tool bags, which are evenly fixed on the outer side of the connecting belt along the extending direction of the connecting belt.

[0013] The beneficial effects of the present invention are as follows: The equipment maintenance device of the present invention is provided with a carrier, a first lifting mechanism, a position adjustment mechanism, an operating table, a second lifting mechanism and a bearing assembly. First, the carrier reaches the maintenance position along a predetermined route. Afterwards, the first lifting mechanism drives the position adjustment mechanism and the operating table to move upward so that the maintenance personnel are lifted to a certain height. In the initial state, the bearing assembly is located on the second lifting mechanism, and the auxiliary personnel place the maintenance tools on the bearing assembly on the ground. Afterwards, the second lifting mechanism lifts the bearing assembly to a height matching the operating table, and the maintenance personnel then transfer the bearing assembly to the operating table. During the entire maintenance process, the maintenance personnel do not need to carry a large number of maintenance tools with them, which reduces the load of the maintenance personnel and ensures the flexibility of maintenance. When the maintenance tools need to be replaced, the maintenance personnel can transfer the bearing assembly from the operating table to the second lifting mechanism, and the maintenance tools can be replaced at any time with the help of the bearing assembly and the second lifting mechanism, which ensures the efficiency and flexibility of maintenance. When the position of the operating table and the maintenance personnel needs to be fine-tuned, the position adjustment mechanism can drive the operating table to move and / or rotate within the plane where the position adjustment mechanism is located. On the whole, it greatly improves the flexibility of maintenance work, which is conducive to ensuring maintenance accuracy and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of some specific embodiments of an equipment maintenance device of the present invention; Figure 2 yes Figure 1 A schematic diagram of the structure of the position adjustment mechanism in the equipment maintenance device shown; Figure 3 yes Figure 1 A schematic diagram of the structure of the load-bearing components in the equipment maintenance device shown; Figure 4 yes Figure 3 A partial enlarged view of the middle A area; Figure 5 yes Figure 3 A schematic diagram of the combined structure of the second rotating seat and the tool storage member in the bearing assembly shown; Figure 6 yes Figure 5 A partial enlarged view of area B.

[0015] In the accompanying drawings, 110, carrier; 120, first lifting mechanism; 130, position adjustment mechanism; 131, static platform; 132, first moving seat; 133, first hydraulic cylinder; 134, first rotating seat; 135, rotating shaft; 136, second hydraulic cylinder; 137, ball bearing; 140, operating table; 141, guardrail; 142, slide rail; 150, bearing assembly; 151, second moving seat; 1511, limiting claw; 15 12. torsion bar; 1513. torsion spring; 152. second lifting seat; 1521. guide rod; 1522. limiting rack; 153. second rotating seat; 154. tool storage; 1541. connecting belt; 1542. plug-in plate; 1543. tool bag; 1544. locking piece; 15441. fixing cylinder; 15442. guide shaft; 15443. plug-in block; 15444. compression spring; 15445. pressing block. DETAILED DESCRIPTION

[0016] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] As described in the background art, existing equipment maintenance devices generally use a lifting platform to lift maintenance personnel to a certain height to perform maintenance on thermal power plant equipment. After the maintenance personnel are lifted to a certain height, it is generally difficult to fine-tune the position of the operating table, resulting in inflexible maintenance work and seriously affecting maintenance efficiency.

[0018] To solve the above problems, refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6The present invention provides an equipment maintenance device, including a carrier 110, a first lifting mechanism 120, a position adjustment mechanism 130, an operating table 140, a second lifting mechanism and a bearing assembly 150. The carrier 110 can move along a predetermined route on the ground. The first lifting mechanism 120 is installed on the top surface of the carrier 110 and can move with the carrier 110. The position adjustment mechanism 130 is installed on the top of the first lifting mechanism 120. The operating table 140 is installed on the top surface of the position adjustment mechanism 130 for maintenance personnel to stand and use. The first lifting mechanism 120 drives the position adjustment mechanism 130 and the operating table 140 to move up and down, so that the position adjustment mechanism 130 and the operating table 140 are lifted to a certain height. The position adjustment mechanism 130 drives the operating table 140 to move and / or rotate within the plane where the position adjustment mechanism 130 is located. The second lifting mechanism is also installed on the top surface of the carrier 110, and is located on one side of the first lifting mechanism 120 as a whole, with a certain distance between it and the operating platform 140 to avoid interference with the movement of the operating platform 140. The second lifting mechanism can move with the carrier 110. The carrying assembly 150 is used to carry tools, and is reciprocatingly installed on the operating platform 140 and the second lifting mechanism.

[0019] The working process and principle of the equipment maintenance device are as follows: The maintenance personnel stand on the operating table 140, and the carrier 110 reaches the maintenance position along the predetermined route. Afterwards, the first lifting mechanism 120 drives the position adjustment mechanism 130 and the operating table 140 to move upward so that the maintenance personnel are lifted to a certain height. In the initial state, the bearing assembly 150 is located on the second lifting mechanism, and the assistant places the maintenance tools on the bearing assembly 150 on the ground. Afterwards, the second lifting mechanism lifts the bearing assembly 150 to a height matching the operating table 140, and the maintenance personnel then transfer the bearing assembly 150 to the operating table 140. During the entire maintenance process, the maintenance personnel do not need to carry a large number of maintenance tools with them, which reduces the load on the maintenance personnel and ensures the flexibility of maintenance. When the maintenance tools need to be replaced, the maintenance personnel can transfer the bearing assembly 150 from the operating table 140 to the second lifting mechanism. With the help of the bearing assembly 150 and the second lifting mechanism, the maintenance tools can be replaced at any time, ensuring the efficiency and flexibility of maintenance. When the positions of the operating platform 140 and the maintenance personnel need to be fine-tuned, the position adjustment mechanism 130 can drive the operating platform 140 to move and / or rotate within the plane where the position adjustment mechanism 130 is located. Overall, the flexibility of maintenance work is greatly improved, which is conducive to ensuring maintenance accuracy and maintenance efficiency.

[0020] Preferably, the carrier 110 may be an automatic guided vehicle, an automatic crawler vehicle or a manual cart.

[0021] Preferably, the first lifting mechanism 120 is a scissor-type hydraulic lift, which pushes the expansion and folding of the scissor-type support frame through the extension and retraction of the oil cylinder, and relies on the expansion and folding of the scissor-type support frame to complete the lifting and lowering of the operating platform 140, so that the operating platform 140 has higher stability after lifting, a wide working platform and a higher load-bearing capacity, which is suitable for multiple people to work at the same time.

[0022] Specifically, in the example, Figure 1 and Figure 2 As shown, the position adjustment mechanism 130 includes a static platform 131, a first movable seat 132, four first hydraulic cylinders 133, a first rotating seat 134 and two second hydraulic cylinders 136. The static platform 131 is installed on the top surface of the first lifting mechanism 120. The first movable seat 132 is movably installed on the top surface of the static platform 131 in a horizontal plane. The cylinder barrels of the four first hydraulic cylinders 133 are respectively hinged at the four corners of the static platform 131, and the output shafts are respectively hinged at the four corners of the first movable seat 132. The four first hydraulic cylinders 133 can drive the first movable seat 132 to move with multiple degrees of freedom relative to the static platform 131. The first rotating seat 134 is rotatably installed on the top surface of the first movable seat 132 through a rotating shaft 135. An operating table 140 is installed on the top surface of the first rotating seat 134. The axes of the two second hydraulic cylinders 136 are arranged at 90 degrees, the cylinder barrels are respectively hinged to the top surface of the first movable seat 132, and the output shafts are respectively hinged to the outer wall of the rotating shaft 135. The two second hydraulic cylinders 136 can drive the first rotating seat 134 to rotate relative to the first movable seat 132, so as to drive the operating platform 140 and the maintenance personnel to rotate.

[0023] Preferably, the position adjustment mechanism 130 further includes a plurality of balls 137. The plurality of balls 137 are installed on the top surface of the static platform 131 in a rectangular, triangular or circular array. The plurality of balls 137 are rotatable and respectively abut against the bottom surface of the first movable seat 132 to reduce the resistance encountered by the first movable seat 132 when it moves, thereby reducing kinetic energy loss and improving motion control accuracy.

[0024] Preferably, the static platform 131 , the first movable seat 132 and the first rotating seat 134 may be made of steel, which has high strength, or may be made of plastic, which has low weight.

[0025] Specifically, in the example, Figure 1 As shown, guardrails 141 are respectively arranged around the operating table 140 to improve the safety of maintenance work. An embedded processor and a scanner are installed on one side of the operating table 140, and a slide rail 142 is arranged on the top surface. The operating table 140 can be slidably connected to the bearing assembly 150 through the slide rail 142 to improve the smoothness of the movement of the bearing assembly 150.

[0026] Preferably, an angle rotary encoder is installed at the hinge of the cylinder barrel of each first hydraulic cylinder 133 and the static platform 131, and at the hinge of each second hydraulic cylinder 136 and the first movable seat 132. Each angle rotary encoder is electrically connected to the embedded processor. Each angle rotary encoder is used to detect the rotation angle of the corresponding hinge point, and send the detection result to the embedded processor, which controls each first hydraulic cylinder 133 and each first hydraulic cylinder 133 to work, thereby improving the degree of automation and the control accuracy.

[0027] Specifically, in the exemplary embodiment, the second lifting mechanism includes a gantry, a first lifting seat, a lifting screw, a nut and a driving motor. The bottom end of the gantry is mounted on the top surface of the carrier 110. The first lifting seat is mounted in the gantry so as to be movable up and down, and a slide rail 142 is provided on the top surface. The first lifting seat can be slidably connected to the bearing assembly 150 through the slide rail 142. The lifting screw is vertically arranged, and the top end is rotatably connected to the top end of the gantry, and the bottom end is rotatably connected to the bottom end of the gantry. The nut is screwed on the lifting screw and fixedly connected to the first lifting seat. The driving motor is mounted on the top end of the gantry, and the output shaft is fixedly connected to the top end of the lifting screw, which can drive the lifting screw to rotate, and then drive the nut and the first lifting seat to move up and down, so as to drive the bearing assembly 150 to move up and down. It should be noted that a certain distance should be left between the first lifting seat and the operating table 140 to avoid interference with the movement of the operating table 140. The bearing assembly 150 can be transferred to the first lifting seat or the operating table 140 by manpower.

[0028] Specifically, in the example, Figure 1 and Figure 3 As shown, the bearing assembly 150 includes a second movable seat 151, a second lifting seat 152, a second rotating seat 153 and a tool storage member 154. The bottom surface of the second movable seat 151 is provided with a slide groove adapted to the slide rail 142. The second lifting seat 152 is mounted on the second movable seat 151 so as to be movable up and down. The second rotating seat 153 is rotatably mounted on the top of the second lifting seat 152. The tool storage member 154 is detachably mounted on the outer periphery of the second rotating seat 153 and is used to carry a variety of maintenance tools.

[0029] It should be noted that the working process and principle of the bearing assembly 150 are as follows: First, the second movable seat 151 moves along the slide rail 142 to the preset area on the operating table 140, and then the height of the second lifting seat 152 relative to the top surface of the operating table 140 is adjusted according to the height of the operator. After that, the maintenance personnel rotate the second rotating seat 153 to select the required maintenance tools. Overall, it is more convenient to take and put different types of maintenance tools, which greatly improves the efficiency of maintenance.

[0030] Preferably, if Figure 3and Figure 4 As shown, a guide rod 1521 and a limiting rack 1522 are provided at the bottom of the second lifting seat 152. A first guide groove for inserting the guide rod 1521 and a second guide groove for inserting the limiting rack 1522 are formed on the second movable seat 151. The first guide groove cooperates with the guide rod 1521 and the second guide groove cooperates with the limiting rack 1522, thereby improving the smoothness of the up and down movement of the second lifting seat 152. A torsion bar 1512, a torsion spring 1513 and a limiting claw 1511 are provided in the second guide groove. One end of the torsion bar 1512 is rotatably connected to the inner wall of the second guide groove, and the other end extends outside the second guide groove. The limiting claw 1511 is installed on the torsion bar 1512. The torsion spring 1513 is sleeved on the torsion bar 1512, one end of which is installed on the inner wall of the second guide groove, and the other end of which is installed on the limiting claw 1511. The maintenance personnel operates the torsion bar 1512, which drives the limiting claw 1511 to rotate, thereby causing the limiting claw 1511 to disengage from the limiting rack 1522, thereby releasing the restriction on the second lifting seat 152. At this time, the limiting rack 1522 and the second lifting seat 152 can move up and down. Afterwards, the maintenance personnel releases the torsion bar 1512, and with the help of the torsion spring 1513, the torsion bar 1512 rotates and resets, thereby driving the limiting claw 1511 to rotate and reset, and the limiting claw 1511 abuts against the limiting rack 1522, thereby restricting the second lifting seat 152 from moving up and down.

[0031] Preferably, if Figure 3 , Figure 5 and Figure 6As shown, two slots are provided on one side of the second rotating seat 153. The tool storage member 154 includes a connecting belt 1541, two plug plates 1542, two locking members 1544 and a plurality of tool bags 1543. The connecting belt 1541 is wound around the outer circumference of the second rotating seat 153. The two plug plates 1542 are inserted into the slots in a one-to-one correspondence with the two slots, so that the tool storage member 154 and the second rotating seat 153 can be disassembled, replaced and installed for use. One of the plug plates 1542 is fixedly connected to one end of the connecting belt 1541, and the other plug plate 1542 is fixedly connected to the other end of the connecting belt 1541. A plurality of tool bags 1543 are evenly fixed on the outer surface of the connecting belt 1541 along the extension direction of the connecting belt 1541. The plurality of tool bags 1543 are used to contain a variety of maintenance tools. The two locking members 1544 are mounted on the top of the plugboard 1542 in a one-to-one correspondence with the two plugboards 1542, and can restrict the plugboard 1542 from being disengaged from the slot or release the restriction on the plugboard 1542. Specifically, each locking member 1544 includes a fixed cylinder 15441, two guide shafts 15442, two plug-in blocks 15443, two compression springs 15444 and two pressing blocks 15445. The fixed cylinder 15441 is fixedly mounted on the top of the plugboard 1542. The two guide shafts 15442 are respectively mounted on both sides of the fixed cylinder 15441. The two plug-in blocks 15443 are slidably connected to the guide shafts 15442 in a one-to-one correspondence with the two guide shafts 15442. Two compression springs 15444 and two guide shafts 15442 are sleeved on the guide shaft 15442 in one-to-one correspondence, and two pressing blocks 15445 and two plug-in blocks 15443 are installed on the top of the plug-in block 15443 in one-to-one correspondence. Plug holes adapted to the plug-in blocks 15443 are respectively arranged on the inner walls on opposite sides of each slot. The human hand drives the two pressing blocks 15445 to move toward each other, so that the two compression springs 15444 are in a compressed state, and the two plug-in blocks 15443 are separated from the corresponding plug-in holes. At this time, the plug-in board 1542 can move up and down along the slot. When the human hand releases the two pressing blocks 15445, the force of the two compression springs 15444 to restore the deformation drives the two plug-in blocks 15443 to move back to each other to be inserted into the corresponding plug-in holes. At this time, the two locking members 1544 can limit the corresponding plug-in board 1542 from moving up and down along the slot.

[0032] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0034] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] In the present invention, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0036] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. An equipment maintenance device, characterized in that: include: Vehicle, capable of movement; A first lifting mechanism is installed on the carrier; A position adjustment mechanism, installed on the top of the first lifting mechanism; An operating table is installed on the top surface of the position adjustment mechanism; the position adjustment mechanism drives the operating table to move and / or rotate within the plane where the position adjustment mechanism is located; the first lifting mechanism drives the position adjustment mechanism and the operating table to move up and down; A second lifting mechanism is installed on the carrier; The bearing assembly is used for bearing tools and is reciprocatably mounted on the operating platform and the second lifting mechanism.

2. The equipment maintenance device according to claim 1, characterized in that: The position adjustment mechanism comprises: A static platform, mounted on the top surface of the first lifting mechanism; A first movable seat is movably mounted on the top surface of the static platform in a horizontal plane; There are four first hydraulic cylinders, the cylinder barrels of which are respectively hinged at the four corners of the static platform, and the output shafts of which are respectively hinged at the four corners of the first moving seat; A first rotating seat, rotatably mounted on the top surface of the first movable seat via a rotating shaft; There are two second hydraulic cylinders, with their axes arranged at 90 degrees, and cylinder barrels are respectively hinged to the top surface of the first movable seat, and output shafts are respectively hinged to the outer wall of the rotating shaft.

3. The equipment maintenance device according to claim 2, characterized in that: The position adjustment mechanism also includes: The balls are multiple and are installed in an array on the top surface of the static platform and respectively abut against the bottom surface of the first movable seat.

4. The equipment maintenance device according to any one of claims 1 to 3, characterized in that: The first lifting mechanism is a scissor-type hydraulic lift.

5. The equipment maintenance device according to any one of claims 1 to 3, characterized in that: The operating table is provided with guardrails on all sides, an embedded processor and a scanner are installed on one side, and a slide rail is provided on the top surface; the operating table can be slidably connected with the bearing assembly through the slide rail.

6. The equipment maintenance device according to claim 5, characterized in that: The second lifting mechanism comprises: A gantry, the bottom end of which is mounted on the top surface of the carrier; A first lifting seat is installed in the door frame so as to be movable up and down, and the top surface of the first lifting seat is provided with the slide rail; the first lifting seat can be slidably connected with the bearing assembly through the slide rail; The lifting screw rod is vertically arranged, with the top end rotatably connected to the top end of the door frame, and the bottom end rotatably connected to the bottom end of the door frame; A nut, screwed onto the lifting screw rod and fixedly connected to the first lifting seat; The driving motor is installed on the top of the door frame, and the output shaft is fixedly connected to the top of the lifting screw rod.

7. The equipment maintenance device according to claim 6, characterized in that: The bearing assembly comprises: A second movable seat, the bottom surface of which is provided with a slide groove adapted to the slide rail; A second lifting seat is installed on the second movable seat so as to be movable up and down; A second rotating seat is rotatably mounted on the top of the second lifting seat; The tool storage part is detachably mounted on the outer periphery of the second rotating seat.

8. The equipment maintenance device according to claim 7, characterized in that: A guide rod and a limiting rack are provided at the bottom of the second lifting seat; The second movable seat is formed with a first guide groove for inserting the guide rod and a second guide groove for inserting the limiting rack; a limiting claw is arranged in the second guide groove; the limiting claw can rotate to abut against the limiting rack or disengage from the limiting rack, thereby limiting the up and down movement of the second lifting seat or releasing the restriction on the second lifting seat.

9. The equipment maintenance device according to claim 7, characterized in that: Two slots are provided on one side of the second rotating seat; The tool storage unit comprises: A connecting belt, wound around the outer circumference of the second rotating seat; There are two plug-in plates, which are inserted into the two slots in a one-to-one correspondence with each other; one of the plug-in plates is fixedly connected to one end of the connecting belt, and the other plug-in plate is fixedly connected to the other end of the connecting belt; There are multiple tool bags, which are evenly fixed on the outer side of the connecting belt along the extending direction of the connecting belt.

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