A motor overhung device saving lower side space

Abstract

The application discloses a motor upper arrangement device saving lower space and relates to the technical field of lifting transmission equipment. The motor upper arrangement device saving lower space comprises a lifting assembly, the top of the lifting assembly is fixedly connected with a lifting driving frame, the top of the lifting driving frame is fixedly connected with an upper mounting seat, and the inside of the upper mounting seat is fixedly connected with a driving assembly. The motor upper arrangement device saving lower space has the advantages that the driving motor assembly is integrally arranged on the top of the lifting driving frame, the vertical transmission structure of the driving sprocket, the transmission chain and the driven sprocket is utilized, motor power is transmitted from top to bottom to the bottom lifting shaft, the space on the lower side of the lifting mechanism is completely released, the installation height of the matched belt conveyor does not need to be lowered for avoiding the motor, an open passage, cleaning and maintenance space is formed at the bottom, the problems of crowded space and inconvenient cleaning and maintenance of the traditional motor lower arrangement structure are solved, the overall layout of the production line equipment is solved through small structural changes, and the transformation cost is low and the structure is simple.

Description

Technical Field

[0001] This invention relates to the field of lifting transmission equipment technology, specifically to a motor-mounted device that saves space on the lower side. Background Technology

[0002] In the field of belt conveyor lifting and adjustment equipment and production line material conveying lifting equipment, the lifting drive device is a core component. It is mainly used to drive the belt conveyor or conveying mechanism to complete the height adjustment to adapt to different conveying conditions. At present, conventional lifting drive devices mostly adopt a direct drive structure in which the motor is directly installed at the end of the lifting shaft. The motor directly drives the shaft to rotate by forward and reverse rotation to realize the lifting action.

[0003] An invention with publication number CN218708924U is currently disclosed, which discloses a belt conveyor lifting drive device, including "a drive motor, a reduction gearbox, a lifting shaft and a lifting frame, wherein the output end of the drive motor is connected to the reduction gearbox, the output end of the reduction gearbox is directly connected to the lifting shaft, and the lifting shaft drives the lifting frame to complete the lifting action." Existing lifting drive devices generally have the problem that the motor is placed at the bottom, occupying the space on the lower side of the lifting mechanism, which means that the matching belt conveyor must be installed at a lower height, resulting in narrow bottom space and making maintenance and repair extremely inconvenient; at the same time, the chain drive has no tension adjustment structure, which can easily lead to chain loosening after long-term use, and the lifting process is prone to jamming and tilting, resulting in poor operating stability. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a space-saving motor-mounted device, which solves the problems mentioned in the background art, such as the lower-mounted motor of the lifting drive device occupying bottom space, inconvenient cleaning and maintenance of supporting equipment, and poor transmission stability.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a space-saving motor mounting device, comprising a lifting assembly, a lifting drive frame fixedly connected to the top of the lifting assembly, an upper mounting base fixedly connected to the top of the lifting drive frame, a drive assembly fixedly connected inside the upper mounting base, a drive sprocket fixedly connected to the output end of the drive assembly, the other end of the drive sprocket fixedly connected to one end of the lifting assembly, a chain tensioning mechanism fixedly connected to the side end of the lifting drive frame, a lifting support frame slidably connected inside the lifting drive frame, and an auxiliary lifting assembly fixedly connected to one end of the lifting assembly and the lifting drive frame on the same side.

[0006] Optionally, the lifting assembly includes a bottom support, a connecting frame is fixedly connected to the top of the bottom support, the top of the connecting frame is fixedly connected to the bottom of the lifting drive frame, a lifting connecting tooth rod is fixedly connected to one end of the inner side wall of the connecting frame, and a lifting inner conical tooth is sleeved on the side surface of the lifting connecting tooth rod located inside the connecting frame.

[0007] Optionally, the lifting drive frame includes a vertical double bracket, the bottom ends of which are fixedly connected to the bottom of the connecting frame, and vertical racks are fixedly connected to the opposite sides of the two columns of the vertical double bracket. Vertical guide grooves are provided on the side surfaces of the columns of the vertical double bracket. A top plate is fixedly connected to the top of the vertical double bracket, and one side of the top of the top plate is fixedly connected to the bottom of the upper mounting base. Multiple guide rods are fixedly connected to the opposite side of the top plate and the connecting frame.

[0008] Optionally, the drive assembly includes a drive motor, one end of which is connected through the interior of the upper mounting base, and the other end of which is shaft-connected to a right-angle reduction gearbox.

[0009] Optionally, the drive sprocket includes a drive sprocket, one end of which is fixedly connected to one end of the right-angle reduction gearbox shaft. A limit rod is sleeved on the side surface of the drive sprocket shaft, and the bottom of the limit rod is fixedly connected to one side of the top of the upper mounting base. A linkage chain is meshed inside the drive sprocket, and a transmission sprocket is meshed on one side inside the linkage chain. A driven sprocket is meshed inside the bottom end of the linkage chain, and one end of the driven sprocket is rotatably connected to the bottom of the outward-facing side of the vertical double bracket. An output gear is sleeved on the shaft of the driven sprocket and the middle of the opposite side of the vertical double bracket. At the same time, the bottom of the output gear is meshed on the gear side surface of the lifting connecting rod extending to the outside of the connecting hole frame.

[0010] Optionally, the chain tensioning mechanism includes a double-layer mounting plate. One side of the double-layer mounting plate is fixedly connected to the top of the side surface of the vertical double bracket. Triangular reinforcing plates are fixedly connected to the bottom of the side of the double-layer mounting plate connected to the vertical double bracket. A lower support plate is fixedly connected to one side of the bottom of the double-layer mounting plate. A tensioning seat is fixedly connected to one side of the top of the double-layer mounting plate. A rocker arm is sleeved on the side surface of the tensioning seat shaft. A pressure roller is penetrated through the other end of the rocker arm. A tensioning spring rod is fixedly connected to the middle of the lower support plate. The top of the tensioning spring rod is sleeved on the middle shaft on the opposite side of the rocker arm. A threaded sleeve is fixedly connected to one side of the top of the tensioning spring rod. A lead screw is threaded at the center of the threaded sleeve. A torque handle is penetrated through the bottom of the lead screw. The bottom of the torque handle is rotatably connected to one side of the top of the lower support plate.

[0011] Optionally, the lifting support frame includes a guide slider, the inside of which is sleeved on the side surface of the guide rod. Two belt connecting seats are fixedly connected to the side of the guide slider facing the auxiliary lifting assembly. A lateral sliding rod is fixedly connected to the opposite side of each of the two belt connecting seats. The opposite ends of the two lateral sliding rods are slidably connected to the inside of the vertical guide groove. Traction gears are fixedly connected to both ends of the guide slider. The inside of each of the two traction gears is meshed with the inside of the vertical rack.

[0012] Optionally, the auxiliary lifting assembly includes an auxiliary bevel gear and a vertical plate. The side surface of the auxiliary bevel gear is engaged with the side surface of the lifting inner bevel gear. The top of the vertical plate is fixedly connected to the bottom of the top plate. A lower pulley is fixedly connected to one end of the auxiliary bevel gear extending to the outside of the connecting hole frame side surface. A movable belt is movably connected inside the lower pulley, and the side surface of the movable belt is movably connected to the inside of the belt connecting seat. An upper pulley is sleeved inside the top end of the movable belt, and one end of the upper pulley is rotatably connected to the outward side of the vertical plate.

[0013] Optionally, the top plate and the upper mounting base are provided with a shock-absorbing pad structure on the opposite side.

[0014] This invention provides a space-saving upper-mounted motor device, which has the following advantages: This space-saving, top-mounted motor unit places the entire drive motor assembly on top of the lifting drive frame. Utilizing a vertical transmission structure of drive sprocket, transmission chain, and driven sprocket, the motor power is transmitted from top to bottom to the bottom lifting shaft. This completely frees up the space under the lifting mechanism, eliminating the need to lower the installation height of the matching belt conveyor to accommodate the motor. This creates an open space for passage, cleaning, and maintenance at the bottom, solving the problems of cramped space and inconvenient cleaning and maintenance associated with traditional bottom-mounted motor structures. A small structural modification solves a major problem in the overall layout of production line equipment, resulting in low modification costs and a simple structure.

[0015] This space-saving, top-mounted motor device features a chain tensioning mechanism on one side of a vertical double-bracket system. The tension spring rod pushes the cradle back and forth, causing the tension sprocket to steplessly adjust the tension of the transmission chain. This automatically compensates for the wear and elongation of the chain over long-term use, preventing problems such as tooth skipping due to excessive looseness and increased load due to excessive tightness. In conjunction with the lead screw structure on one side of the tension spring rod, the tensioning mechanism can be angle-limited, allowing operators to effectively control the tension range and significantly improving transmission stability and equipment lifespan.

[0016] This space-saving upper-mounted motor device uses vertical guide grooves and racks on the side of the lifting drive frame to work in conjunction with the guide sliders and traction gears of the lifting support frame, forming a precise vertical guide limit. Combined with the meshing transmission of the lifting drive gears and the vertical racks, the lifting support frame operates without shaking, tilting, or jamming, significantly improving lifting accuracy and load-bearing capacity.

[0017] This space-saving upper motor mounting device provides axial elastic force by using a centering spring to support the centering rod, giving the rotating rod a clear positioning feel during movement. The handle is located at the top of the upper rod for easy gripping and rotation, allowing for unlocking, adjustment, and locking operations to be completed with one hand. It also provides a clear indication of the locking status of the latch, making it easy for operators to judge.

[0018] This space-saving, top-mounted motor unit features a modular design that facilitates installation, disassembly, and maintenance. The shock-absorbing pads at the bottom of the top mounting base effectively absorb vibrations from the drive motor and gearbox during operation, reducing overall machine vibration and operating noise, and further improving the stability of equipment operation. Attached Figure Description

[0019] Figure 1 This is a top view of the left side of the overall structure of the invention; Figure 2 This is a top view of the right side of the overall structure of the invention; Figure 3 This is a schematic diagram of the lock seat structure in the invention; Figure 4 This is a top view of the lifting drive frame structure in the invention; Figure 5 This is an enlarged schematic diagram of the top structure of the lifting drive frame in this invention; Figure 6 This is a schematic diagram of the internal structure of the lifting component in this invention; Figure 7 This is a schematic diagram of the drive sprocket structure in the invention; Figure 8 This is a schematic diagram of the chain tensioning mechanism in the invention; Figure 9 This is a schematic diagram of the lifting support frame structure in this invention.

[0020] In the diagram: 1. Lifting assembly; 101. Bottom support; 102. Connecting frame; 103. Lifting connecting gear; 104. Lifting inner bevel gear; 2. Lifting drive frame; 201. Vertical double bracket; 202. Vertical guide groove; 203. Vertical rack; 204. Top plate; 205. Guide rod; 3. Upper mounting base; 4. Drive assembly; 401. Drive motor; 402. Right-angle reducer; 5. Drive sprocket; 501. Drive sprocket; 502. Limiting rod; 503. Linkage chain; 504. Transmission sprocket; 505. Driven sprocket; 506. Output 6. Gear; 6. Chain tensioning mechanism; 601. Double-layer mounting plate; 602. Triangular reinforcing plate; 603. Lower support plate; 604. Tensioning seat; 605. Cradle; 606. Pressure roller; 607. Tensioning spring rod; 608. Threaded sleeve; 609. Threaded rod; 6010. Torque handle; 7. Lifting support frame; 701. Guide slider; 702. Belt connecting seat; 703. Side sliding rod; 704. Traction gear; 8. Auxiliary lifting assembly; 801. Auxiliary bevel gear; 802. Lower pulley; 803. Movable belt; 804. Upper pulley; 805. Vertical plate. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0022] In the description of this invention, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0024] Please see Figures 1 to 9The present invention provides a technical solution: a space-saving motor mounting device, comprising a lifting assembly 1, a lifting drive frame 2 fixedly connected to the top of the lifting assembly 1, an upper mounting base 3 fixedly connected to the top of the lifting drive frame 2, a drive assembly 4 fixedly connected inside the upper mounting base 3, a drive sprocket 5 fixedly connected to the output end of the drive assembly 4, the other end of the drive sprocket 5 fixedly connected to one end of the lifting assembly 1, a chain tensioning mechanism 6 fixedly connected to the side end of the lifting drive frame 2, a lifting support frame 7 slidably connected inside the lifting drive frame 2, and an auxiliary lifting assembly 8 fixedly connected to one end of the lifting assembly 1 and the lifting drive frame 2 on the same side.

[0025] In this embodiment, as Figure 3 and Figure 5 As shown, the lifting assembly 1 includes a bottom support 101, a connecting frame 102 is fixedly connected to the top of the bottom support 101, the top of the connecting frame 102 is fixedly connected to the bottom of the lifting drive frame 2, a lifting connecting tooth 103 is fixedly connected to one end of the inner side wall of the connecting frame 102, and a lifting inner bevel tooth 104 is sleeved on the side surface of the lifting connecting tooth 103 located inside the connecting frame 102.

[0026] In this embodiment, as Figure 3 As shown, the lifting drive frame 2 includes a vertical double support 201. The bottom ends of the vertical double support 201 are fixedly connected to the bottom of the connecting frame 102. Vertical racks 203 are fixedly connected to the opposite sides of the two columns of the vertical double support 201. Vertical guide grooves 202 are opened on the side surfaces of the columns of the vertical double support 201. A top plate 204 is fixedly connected to the top of the vertical double support 201, and one side of the top of the top plate 204 is fixedly connected to the bottom of the upper mounting base 3. Multiple guide rods 205 are fixedly connected to the opposite side of the top plate 204 and the connecting frame 102.

[0027] In this embodiment, as Figure 9 As shown, the drive assembly 4 includes a drive motor 401, one end of which is connected through the interior of the upper mounting base 3, and the other end of the drive motor 401 is shaft-connected to a right-angle reduction gearbox 402.

[0028] In this embodiment, as Figure 6As shown, the drive sprocket 5 includes a drive sprocket 501. One end of the drive sprocket 501 is fixedly connected to one end of the shaft of the right-angle reducer 402. A limit rod 502 is sleeved on the side surface of the shaft of the drive sprocket 501. The bottom of the limit rod 502 is fixedly connected to one side of the top of the upper mounting base 3. A linkage chain 503 is meshed inside the drive sprocket 501. A transmission sprocket 504 is meshed on one side inside the linkage chain 503. A driven sprocket 505 is meshed inside the bottom end of the linkage chain 503. One end of the driven sprocket 505 is rotatably connected to the bottom of the outward side of the vertical double bracket 201. An output gear 506 is sleeved on the shaft of the driven sprocket 505 and the middle of the opposite side of the vertical double bracket 201. At the same time, the bottom of the output gear 506 is meshed on the gear side surface of the lifting connecting rod 103 extending to the outside of the connecting hole frame 102.

[0029] In this embodiment, as Figure 7 As shown, the chain tensioning mechanism 6 includes a double-layer mounting plate 601. One side of the double-layer mounting plate 601 is fixedly connected to the top of the side surface of the vertical double bracket 201. Triangular reinforcing plates 602 are fixedly connected to the bottom of the side of the double-layer mounting plate 601 connected to the vertical double bracket 201. A lower support plate 603 is fixedly connected to one side of the bottom of the double-layer mounting plate 601. A tensioning seat 604 is fixedly connected to one side of the top of the double-layer mounting plate 601. A rocker arm 605 is sleeved on the side surface of the shaft of the tensioning seat 604. A pressure roller 606 is connected through the other end of 605. A tension spring rod 607 is fixedly connected to the middle of the lower support plate 603. The top of the tension spring rod 607 is sleeved on the middle shaft on the opposite side of the rocker arm 605. A threaded sleeve 608 is fixedly connected to one side of the top of the tension spring rod 607. A threaded rod 609 is threaded at the center of the threaded sleeve 608. A torque handle 6010 is connected through the bottom of the threaded rod 609. The bottom of the torque handle 6010 is rotatably connected to one side of the top of the lower support plate 603.

[0030] In this embodiment, as Figure 8 As shown, the lifting support frame 7 includes a guide slider 701. The inside of the guide slider 701 is sleeved on the side surface of the guide rod 205. Two belt connecting seats 702 are fixedly connected to the side of the guide slider 701 facing the auxiliary lifting assembly 8. A side sliding rod 703 is fixedly connected to the opposite side of the two belt connecting seats 702. The opposite ends of the two side sliding rods 703 are slidably connected to the inside of the vertical guide groove 202. Traction gears 704 are fixedly connected to both ends of the guide slider 701. The inside of the two traction gears 704 are meshed with the inside of the vertical rack 203.

[0031] In this embodiment, as Figure 8 and Figure 9As shown, the auxiliary lifting assembly 8 includes an auxiliary bevel gear 801 and a vertical plate 805. The side surface of the auxiliary bevel gear 801 is meshed with the side surface of the lifting inner bevel gear 104. The top of the vertical plate 805 is fixedly connected to the bottom of the top plate 204. The end of the auxiliary bevel gear 801 extending to the outside of the side surface of the connecting hole frame 102 is fixedly connected to a lower pulley 802. The interior of the lower pulley 802 is movably connected to a movable belt 803, and the side surface of the movable belt 803 is movably connected to the interior of the belt connecting seat 702. The top end of the movable belt 803 is sleeved with an upper pulley 804, and one end of the upper pulley 804 is rotatably connected to the outward side of the vertical plate 805.

[0032] In this embodiment, as Figure 9 As shown, the top plate 204 and the upper mounting base 3 are provided with a shock-absorbing pad structure on the opposite side.

[0033] The method of using the present invention: This space-saving motor mounting device operates as follows: like Figures 1 to 9 As shown, firstly, the connecting frame 102 and the vertical double bracket 201 are fixed in the predetermined position on the production line by the bottom support 101. The shock-absorbing pad is clamped between the upper mounting base 3 and the top of the top plate 204. The upper mounting base 3 is fixed firmly by bolts. After the drive motor 401 and the right angle reducer 402 are assembled, they are fixed in the upper mounting base 3. The drive sprocket 501 is installed on the output shaft end of the right angle reducer 402. The linkage chain 503 is connected to the transmission sprocket 504 and the driven sprocket 505 respectively. The extended end of the lifting connecting rod 103 meshes with the bottom of the output gear 506. The double-layer mounting plate 601 of the chain tensioning mechanism 6 is fixed on the top of the side of the vertical double bracket 201. Rotating the torque handle 6010 pushes the thread sleeve 608 on the top of the side surface of the lead screw 609 to fall and move, so that the rocker arm 605 on the top of the tensioning spring rod 607 is angle-limited along the tensioning seat 604 and pressed on the outside of the linkage chain 503. Adjust the chain tension to a moderate level, without looseness or over-tightness. The guide slider 701 of the lifting support frame 7 is clamped and moved by the belt connecting seat 702 and the movable belt 803, the sliding movement of the side sliding rod 703 and the vertical guide groove, and the meshing movement of the traction gear 704 and the vertical rack 203, so that the lifting support frame 7 can move up and down smoothly and effectively, prevent traction deviation, and increase the load capacity. When the equipment is running, the drive motor 401 is started. After the power is reduced and the torque is increased by the right-angle reducer 402, it drives the drive sprocket 501 to rotate. Through the linkage chain 503, the transmission sprocket 504, the driven sprocket 505 and the output gear 506 rotate together. The driven sprocket 505 drives the output gear 506 in the middle to rotate. Through the meshing with the lifting connecting rod 103, the lifting inner bevel gear 104 inside the connecting hole frame 102 also starts to rotate. The lifting inner bevel gear 104 meshes with the transmission auxiliary bevel gear 801 and the lower pulley 802 to rotate. At this time, the movable belt 803 located inside the lower pulley 802 and the upper pulley 804 drives the guide slider 701 at one end of the belt connecting seat 702 to move up and down. Since the drive assembly 4 is located on top of the lifting drive frame 2, there are no motor components obstructing the lower side of the lifting mechanism, creating an open space at the bottom. The matching belt conveyor does not need to be lowered in installation height, and daily production line cleaning and equipment maintenance can be carried out smoothly at the bottom. After long-term use, if the linkage chain 503 wears and elongates, simply rotate the torque handle 6010 and fine-tune the adjustable angle of the tension spring rod 607 to quickly restore the normal tension of the chain without disassembling the transmission components.

[0034] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A space-saving motor mounting device, comprising a lifting assembly (1), a lifting drive frame (2) fixedly connected to the top of the lifting assembly (1), an upper mounting base (3) fixedly connected to the top of the lifting drive frame (2), a drive assembly (4) fixedly connected inside the upper mounting base (3), a drive sprocket (5) fixedly connected to the output end of the drive assembly (4), the other end of the drive sprocket (5) fixedly connected to one end of the lifting assembly (1), a chain tensioning mechanism (6) fixedly connected to the side end of the lifting drive frame (2), a lifting support frame (7) slidably connected inside the lifting drive frame (2), and an auxiliary lifting assembly (8) fixedly connected to one end of the lifting assembly (1) and the lifting drive frame (2) on the same side.

2. The space-saving upper motor mounting device according to claim 1, characterized in that: The lifting assembly (1) includes a bottom support (101), the top of which is fixedly connected to a connecting frame (102), the top of which is fixedly connected to the bottom of the lifting drive frame (2), and a lifting connecting tooth rod (103) is fixedly connected to one end of the inner wall of the connecting frame (102). The lifting connecting tooth rod (103) is fitted with a lifting inner bevel tooth (104) on the side surface inside the connecting frame (102).

3. The space-saving upper motor mounting device according to claim 2, characterized in that: The lifting drive frame (2) includes a vertical double support (201). Both ends of the bottom of the vertical double support (201) are fixedly connected to the bottom of the connecting frame (102). Vertical racks (203) are fixedly connected to the opposite sides of the two columns of the vertical double support (201). Vertical guide grooves (202) are opened on the side surfaces of the columns of the vertical double support (201). A top plate (204) is fixedly connected to the top of the vertical double support (201), and one side of the top of the top plate (204) is fixedly connected to the bottom of the upper mounting base (3). Multiple guide rods (205) are fixedly connected to the opposite side of the top plate (204) and the connecting frame (102).

4. The space-saving upper motor mounting device according to claim 1, characterized in that: The drive assembly (4) includes a drive motor (401), one end of which is connected through the interior of the upper mounting base (3), and the other end of which is shaft-connected to a right-angle reduction gearbox (402).

5. A space-saving upper-mounted motor device according to claim 4, characterized in that: The drive sprocket (5) includes a drive sprocket (501), one end of which is fixedly connected to one end of the shaft of the right-angle reduction gearbox (402). A limit rod (502) is sleeved on the side surface of the shaft of the drive sprocket (501). The bottom of the limit rod (502) is fixedly connected to one side of the top of the upper mounting base (3). A linkage chain (503) is meshed inside the drive sprocket (501), and a transmission chain is meshed on one side inside the linkage chain (503). The wheel (504) is internally meshed with a driven sprocket (505) at the bottom end of the linkage chain (503), and one end of the driven sprocket (505) is rotatably connected to the bottom of the vertical double bracket (201) on the outward side. The shaft of the driven sprocket (505) is sleeved with an output gear (506) on the middle of the opposite side of the vertical double bracket (201). At the same time, the bottom of the output gear (506) is meshed with the gear side surface of the lifting connecting rod (103) extending to the outside of the connecting hole frame (102).

6. The space-saving upper motor mounting device according to claim 3, characterized in that: The chain tensioning mechanism (6) includes a double-layer mounting plate (601). One side of the double-layer mounting plate (601) is fixedly connected to the top of the side surface of the vertical double bracket (201). Triangular reinforcing plates (602) are fixedly connected to the bottom of the side of the double-layer mounting plate (601) connected to the vertical double bracket (201). A lower support plate (603) is fixedly connected to one side of the bottom of the double-layer mounting plate (601). A tensioning seat (604) is fixedly connected to one side of the top of the double-layer mounting plate (601). A rocker arm (605) is sleeved on the side surface of the shaft of the tensioning seat (604). (605) A pressure roller (606) is connected through the other end. A tension spring rod (607) is fixedly connected to the middle of the lower support plate (603). The top of the tension spring rod (607) is sleeved on the middle shaft on the opposite side of the rocker arm (605). A threaded sleeve (608) is fixedly connected to one side of the top of the tension spring rod (607). A threaded rod (609) is threaded at the center of the threaded sleeve (608). A torque handle (6010) is connected through the bottom of the threaded rod (609). The bottom of the torque handle (6010) is rotatably connected to one side of the top of the lower support plate (603).

7. A space-saving upper-mounted motor device according to claim 3, characterized in that: The lifting support frame (7) includes a guide slider (701), the inside of which is sleeved on the side surface of the guide rod (205). Two belt connecting seats (702) are fixedly connected to the side of the guide slider (701) facing the auxiliary lifting assembly (8). A side sliding rod (703) is fixedly connected to the opposite side of the two belt connecting seats (702). The opposite ends of the two side sliding rods (703) are slidably connected to the inside of the vertical guide groove (202). Traction gears (704) are fixedly connected to both ends of the guide slider (701). The inside of the two traction gears (704) is meshed with the inside of the vertical rack (203).

8. A space-saving upper-mounted motor device according to claim 2, characterized in that: The auxiliary lifting assembly (8) includes an auxiliary bevel gear (801) and a vertical plate (805). The side surface of the auxiliary bevel gear (801) is meshed with the side surface of the lifting inner bevel gear (104). The top of the vertical plate (805) is fixedly connected to the bottom of the top plate (204). One end of the auxiliary bevel gear (801) extending to the outside of the side surface of the connecting hole frame (102) is fixedly connected to a lower pulley (802). The lower pulley (802) is movably connected to a movable belt (803), and the side surface of the movable belt (803) is movably connected to the inside of the belt connecting seat (702). The top end of the movable belt (803) is sleeved with an upper pulley (804), and one end of the upper pulley (804) is rotatably connected to the outward side of the vertical plate (805).

9. A space-saving upper-mounted motor device according to claim 3, characterized in that: The top plate (204) and the upper mounting base (3) are provided with shock-absorbing pad structures on opposite sides.

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