Heat treatment device for machining fan accessories

Abstract

The invention belongs to the technical field of fan accessory machining, and particularly relates to a heat treatment device for fan accessory machining, the heat treatment device comprises a workbench, a control panel, an active cooling groove and a water tank, the control panel is arranged at the upper end of the workbench, the active cooling groove is formed in the upper end of the workbench, and the water tank is arranged in the inclined side end of the workbench. By arranging the limiting groove, the vertical driving support, the swing arm, the reciprocating conveying mechanism, the positioning rod, the vertical positioning clamp, the self-guiding inclined placing frame, the middle linkage rod and the clamping arm, a first motor, a second motor, a steering adjusting motor, a water pump and an air cylinder are controlled through a control panel. When fan accessories need to be quenched or normalized, an operator places the accessories in the circular groove in the upper end of the self-guiding inclined placing frame. And if quenching is needed, water in the water tank is pumped out through the water pump, and the water is sprayed out through the atomization nozzle after being pressurized. According to different quenching modes, the accessory can be placed in water of the active cooling tank.

Description

Technical Field

[0001] The invention relates to the technical field of fan accessory processing, in particular to a heat treatment device for fan accessory processing. Background Art

[0002] Heat treatment during wind turbine component processing is a critical step in improving their mechanical properties and service life. In the wind power sector, core components such as blades, hubs, and bearings are subjected to complex alternating loads and harsh environmental corrosion over extended periods. Traditional natural cooling or single quenching processes struggle to meet the comprehensive performance requirements for high strength, fatigue resistance, and corrosion resistance.

[0003] Existing heat treatment equipment for wind turbine components suffers from significant technical flaws: Traditional equipment relies on manual fixture replacement to switch between normalizing and quenching (taking ≥180 seconds), resulting in prolonged exposure of workpieces to high temperatures, causing grain coarsening. Furthermore, flat fixtures are prone to slipping when gripping special-shaped parts (with a 12% failure rate), requiring multiple positioning adjustments. Chain conveying results in high vibration amplitude (±1.5mm positioning error), causing damage to workpieces such as large impellers. A single cooling mode struggles to adapt to complex operating conditions. For example, fluctuations in cooling rate during the quenching phase can lead to uneven martensite transformation, reducing the fatigue life of turbine hubs above 5MW by 30-40%. These deficiencies directly drive up operation and maintenance costs, hindering the large-scale development of offshore wind power. Summary of the Invention

[0004] In response to the deficiencies of the prior art, the present invention provides a heat treatment device for fan accessory processing, which solves the current problems of excessive reliance on manual labor when switching between normalizing and quenching, resulting in slow switching speed, and the reliance on manual adjustment for clamping flat accessories.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a heat treatment device for processing fan accessories, comprising a workbench, a control panel, an active cooling trough and a water tank, wherein the control panel is arranged at the upper end of the workbench, the active cooling trough is opened inside the upper end of the workbench, and the water tank is arranged inside the oblique side end of the workbench.

[0006] A vertical drive bracket is provided at the side end of the workbench, a first motor is provided at the side end of the vertical drive bracket, a water inlet is opened at the side end of the vertical drive bracket, a reciprocating conveying mechanism is provided on the side of the vertical drive bracket, a vertical positioning clamp is provided on the outside of the reciprocating conveying mechanism near the bottom, a cylinder is provided at the upper end of the vertical positioning clamp, a self-guided oblique placement rack is provided at the upper end of the workbench, and an atomizing nozzle and a water pump are provided at the side end of the workbench next to the water tank.

[0007] The vertical drive bracket also includes a bearing ring, a transmission shaft, a swing arm and a limit groove. The bearing ring is inserted into the interior of the vertical drive bracket, the transmission shaft is movably connected to the middle part of the bearing ring, the swing arm is sleeved on the outer periphery of the transmission shaft, and the limit groove is opened on the end face of the vertical drive bracket facing the swing arm.

[0008] In some embodiments, the reciprocating conveying mechanism also includes a transverse slider, a transverse slide rail, a positioning rod and a connecting bolt. The transverse slider is embedded on both sides of the outer periphery of the transverse slide rail and is embedded in the reciprocating conveying mechanism, and a sliding connection relationship is established between them. The transverse slide rail is provided in two groups and is respectively welded to the side walls of the vertical drive bracket.

[0009] In some embodiments, the positioning rod is welded to the end face of the reciprocating conveying mechanism facing the vertical driving bracket, and the other end of the positioning rod is embedded in the limiting groove, and the connecting bolt is threadedly connected to the end face of the reciprocating conveying mechanism away from the positioning rod.

[0010] In some embodiments, the limiting groove is a semicircular ring structure, and the maximum rotation angle of the swing arm around the center of the transmission shaft is 180°.

[0011] In some embodiments, the vertical positioning clamp also includes a middle linkage rod, a clamp arm, a connecting rod and a locking frame. The middle linkage rod passes through the middle of the vertical positioning clamp, and the upper end is threadedly connected to the cylinder. Rectangular protrusions are provided on the left and right sides of the vertical positioning clamp, and the clamp arm is provided in two groups and is rotatably connected to both sides of the protrusion.

[0012] In some embodiments, the connecting rods are provided with two groups, and an axis structure is provided at the ends of both sides thereof to pass through the side walls of the clamping arm. The two sides of the axis structure pass through the side walls of the clamping arm and establish a movable connection relationship with the clamping arm. The locking frame is movably connected between the connecting rods on both sides and establishes a movable connection relationship with the connecting rods.

[0013] In some embodiments, the lock frame, connecting rod and clamp arm all adopt a symmetrical parallel double-layer design, wherein the middle of the lock frame is passed through by the middle linkage rod, and the middle linkage rod passes through one end of the lock frame and is provided with a disc-shaped structure.

[0014] In some embodiments, the self-guided oblique placement frame also includes a movable end placement plate, a vertical shaft, a positioning clamp, a steering adjustment motor and a second motor. The middle side end of the movable end placement plate is provided with an axis structure, and the end facing the second motor is connected to the second motor. The vertical shaft passes through the movable end placement plate and is clamped to the top of the steering adjustment motor.

[0015] In some embodiments, the positioning clamp is sleeved on the outer end surface of the vertical shaft and is perpendicular to the vertical shaft, the second motor is fixedly installed inside the workbench, and the steering adjustment motor is embedded inside the side end of the movable end placement plate.

[0016] Compared with the prior art, the present invention provides a heat treatment device for fan parts processing:

[0017] A heat treatment device for processing fan accessories is provided. By setting a limit slot, a vertical drive bracket, a swing arm, a reciprocating conveying mechanism, a positioning rod, a vertical positioning clamp, a self-guided oblique placement rack, a middle linkage rod and a clamping arm, when the device is in use, the operator controls the first motor, the second motor, the steering adjustment motor, the water pump and the cylinder through the control panel. When the fan accessories need to be quenched or normalized, the operator places the accessories in the circular groove at the upper end of the self-guided oblique placement rack. For normalizing, the accessories are left to cool naturally. For quenching, water in the water tank is pumped out by a water pump and sprayed out through an atomizing nozzle after pressurization. Depending on the quenching method, the accessories can also be placed in the water of an active cooling tank. The first motor controls the rotation of the swing arm through the transmission shaft, and the swing arm moves in a regular semicircular trajectory in the limit slot through the positioning rod. During this process, the reciprocating conveying mechanism is driven and moves under the limit of the horizontal slider. When the bottom of the reciprocating conveying mechanism is facing the accessory, the steering adjustment motor controls the rotation of the vertical shaft and synchronously drives the positioning clamp to rotate above the accessory. Then the second motor controls the movable end placement plate to rotate counterclockwise through the front shaft. At this time, the bottom of the accessory loses support and tilts to one side, and the positioning clamp limits it from the outside of the accessory until the accessory is completely tilted and stops. The cylinder pulls the lock frame through the middle linkage rod. The lock frame synchronously drives the clamping arms connected on both sides and prompts the clamping arms to clamp toward the middle until they contact the two sides of the accessory and fix it. Under the continuous drive of the swing arm, the reciprocating conveying mechanism drives the accessory clamped at the bottom to the active cooling tank filled with water on the other side of the workbench. During the quenching process, the cooling state of the accessory can be controlled by the back and forth swinging of the reciprocating conveying mechanism;

[0018] Through the above settings and processes, the device has the following beneficial effects:

[0019] 1. Traditional equipment requires manual replacement of fixtures to achieve normalizing / quenching switching, which takes up to 180 seconds and has a positioning accuracy of only ±1.5mm. This device achieves mode switching within 1 second and a repeatable positioning accuracy of ±0.2mm through the mechanical linkage of the swing arm and the limit slot, combined with the closed-loop control of the vertical positioning clamp. The horizontal slider design of the reciprocating conveying mechanism further eliminates the jitter problem of traditional chain conveying, reducing the vibration amplitude of circular fan accessories, such as Φ800mm impellers, by 82%. Automated conveying and switching not only increases the speed of accessory delivery, but also avoids workers from frequent contact with high-temperature accessories, thereby improving safety.

[0020] 2. The self-guided inclined placement frame uses a second motor to dynamically tilt the movable end placement plate from 15° to 45°, increasing the clamping arm contact area by 40%. The vertical axis and steering adjustment motors, along with the positioning clamp, allow the movable end placement plate to dynamically adjust and press down on the component, preventing it from tipping over and ensuring stable clamping. Compared to existing flat fan component clamping systems, this eliminates the need for manual adjustment of the clamping angle, further improving automation while also preventing injuries to workers from the mechanical gripper. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the location of the side water inlet of the present invention;

[0023] Figure 3 This is a schematic diagram of the connection position structure of the first motor, the bearing collar and the transmission shaft of the present invention;

[0024] Figure 4 This is a schematic diagram of the overall state of the self-guided oblique placement rack of the present invention after being flipped on one side in the oblique guiding state;

[0025] Figure 5 This is a schematic diagram of the installation position structure of the water tank and atomizing nozzle of the present invention;

[0026] Figure 6 This is a schematic diagram of the connection position of the middle linkage rod and the lock frame of the present invention;

[0027] Figure 7 It is an overall schematic diagram of the swing arm of the present invention in a horizontal position.

[0028] In the figure: 1. Workbench; 2. Control panel; 3. Active cooling tank; 4. Vertical drive bracket; 401. Bearing ring; 402. Drive shaft; 403. Swing arm; 404. Limiting slot; 5. First motor; 6. Water inlet; 7. Reciprocating conveying mechanism; 701. Horizontal slider; 702. Horizontal slide rail; 703. Positioning rod; 704. Connecting bolt; 8. Vertical positioning clamp; 801. Middle linkage rod; 802. Clamp arm; 803. Connecting rod; 804. Locking frame; 9. Cylinder; 10. Self-guided oblique placement frame; 1001. Movable end placement plate; 1002. Vertical shaft; 1003. Positioning clamp; 1004. Steering adjustment motor; 1005. Second motor; 11. Water tank; 12. Atomizing nozzle; 13. Water pump. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] In the description of the present invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," "the other end," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "connected," etc., should be understood in a broad sense. For example, "connected" may refer to a fixed connection, a detachable connection, or an integral connection; it may refer to a mechanical connection or an electrical connection; it may refer to a direct connection or an indirect connection through an intermediate medium; it may refer to internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0032] In this embodiment: a heat treatment device for processing fan accessories includes a workbench 1, a control panel 2, an active cooling tank 3 and a water tank 11, the control panel 2 is arranged at the upper end of the workbench 1, the active cooling tank 3 is opened inside the upper end of the workbench 1, and the water tank 11 is arranged inside the oblique side end of the workbench 1.

[0033] A vertical driving bracket 4 is provided at the side end of the workbench 1, a first motor 5 is provided at the side end of the vertical driving bracket 4, a water inlet 6 is opened at the side end of the vertical driving bracket 4, a reciprocating conveying mechanism 7 is provided on the side of the vertical driving bracket 4, a vertical positioning clamp 8 is provided on the outside of the reciprocating conveying mechanism 7 near the bottom, a cylinder 9 is provided on the upper end of the vertical positioning clamp 8, a self-guided oblique placement rack 10 is provided at the upper end of the workbench 1, and an atomizing nozzle 12 and a water pump 13 are provided at the side end of the workbench 1 on the side of the water tank 11.

[0034] The vertical drive bracket 4 also includes a bearing ring 401, a transmission shaft 402, a swing arm 403 and a limit groove 404. The bearing ring 401 is inserted into the inside of the vertical drive bracket 4, the transmission shaft 402 is movably connected to the middle of the bearing ring 401, the swing arm 403 is sleeved on the outer periphery of the transmission shaft 402, and the limit groove 404 is opened on the end face of the vertical drive bracket 4 facing the swing arm 403.

[0035] In this embodiment, the reciprocating conveying mechanism 7 also includes a transverse slider 701, a transverse slide rail 702, a positioning rod 703 and a connecting bolt 704. The transverse slider 701 is embedded in the outer sides of the transverse slide rail 702 and is embedded in the reciprocating conveying mechanism 7, and a sliding connection relationship is established between them. There are two groups of transverse slide rails 702, and they are respectively welded to the side walls of the vertical drive bracket 4; the positioning rod 703 is welded to the end face of the reciprocating conveying mechanism 7 facing the vertical drive bracket 4, and the other end of the positioning rod 703 is embedded in the limiting groove 404, and the connecting bolt 704 is threadedly connected to the end face of the reciprocating conveying mechanism 7 away from the positioning rod 703.

[0036] Specifically, such as Figure 1 Figure 2 as well as Figure 3 As shown, the swing arm 403 of the vertical driving bracket 4 is linked with the limiting groove 404, and the driving transmission shaft 402 drives the reciprocating conveying mechanism 7 to move horizontally, and accurately conveys the Φ1200mm impeller to the active cooling groove 3.

[0037] In this embodiment, the limit groove 404 is a semicircular ring structure, and the maximum rotation angle of the swing arm 403 around the center of the transmission shaft 402 is 180°; the vertical positioning clamp 8 also includes a middle linkage rod 801, a clamping arm 802, a connecting rod 803 and a locking frame 804. The middle linkage rod 801 runs through the middle of the vertical positioning clamp 8, and the upper end is threadedly connected to the cylinder 9. Rectangular protrusions are provided on the left and right sides of the vertical positioning clamp 8, and two groups of clamping arms 802 are provided, and are rotatably connected to both sides of the protrusions.

[0038] Specifically, such as Figure 5 and Figure 7 As shown, a circulating cooling system is constructed using the integrated water pump 13 and water inlet 6 of the workbench 1, which is coordinated with two sets of transverse slides 702 to alternately transport workpieces. While one set of gearboxes is being processed in the active cooling tank 3, the other set can be quickly reset by a 180-degree rotation using the swing arm 403, reducing the single-batch processing time from 300 seconds in traditional processes to 90 seconds.

[0039] In this embodiment, there are two groups of connecting rods 803, and the ends of both sides of the connecting rods 803 are respectively provided with shaft structures passing through them. The two sides of the shaft structure pass through the side walls of the clamping arm 802 respectively and establish a movable connection relationship with the clamping arm 802. The locking frame 804 is movably connected between the connecting rods 803 on both sides and establishes a movable connection relationship with the connecting rods 803; the locking frame 804, the connecting rod 803 and the clamping arm 802 all adopt a symmetrical parallel double-layer design, in which the middle part of the locking frame 804 is passed through by the middle linkage rod 801, and the middle linkage rod 801 passes through the lock frame 804 and is provided with a disc-shaped structure at one end.

[0040] Specifically, such as Figure 4 Figure 6 as well as Figure 7 As shown, the steering adjustment motor 1004 of the self-guided oblique placement rack 10 drives the vertical shaft 1002 to rotate 35°, so that the positioning clamping plate 1003 adapts to the curved surface of the bearing seat.

[0041] In this embodiment, the self-guided oblique placement frame 10 also includes a movable end placement plate 1001, a vertical shaft 1002, a positioning clamping plate 1003, a steering adjustment motor 1004 and a second motor 1005. The middle side end of the movable end placement plate 1001 is provided with a shaft structure, and the end facing the second motor 1005 is plugged into the second motor 1005. The vertical shaft 1002 passes through the movable end placement plate 1001 and is clamped to the top of the steering adjustment motor 1004; the positioning clamping plate 1003 is sleeved on the outer end face of the vertical shaft 1002 and is perpendicular to the vertical shaft 1002. The second motor 1005 is fixedly installed inside the workbench 1, and the steering adjustment motor 1004 is embedded inside the side end of the movable end placement plate 1001.

[0042] It should be noted that the transverse slide block 701 of the reciprocating conveying mechanism 7 slides simultaneously along the double transverse slide rails 702 and fixes the workpiece via the connecting bolt 704, thereby achieving seamless switching of asymmetric parts between normalizing and quenching processes.

[0043] The working principle and use process of the present invention: When the device is in use, the operator controls the first motor 5, the second motor 1005, the steering adjustment motor 1004, the water pump 13 and the cylinder 9 through the control panel 2. When the fan accessories need to be quenched or normalized, the operator places the accessories in the circular groove at the upper end of the self-guided inclined placement rack 10. For normalizing, let it cool naturally. For quenching, the water in the water tank 11 is pumped out by the water pump 13 and sprayed out through the atomizing nozzle 12 after pressurization. Depending on the quenching method, the accessories can also be placed in the water of the active cooling tank 3. The first motor 5 controls the rotation of the swing arm 403 through the transmission shaft 402, and the swing arm 403 performs a regular semicircular trajectory motion in the limit groove 404 through the positioning rod 703. In this process, the reciprocating conveying mechanism 7 is driven and moves under the limit of the horizontal slider 701. When the bottom of the reciprocating conveyor 7 is facing the accessory, the steering adjustment motor 1004 controls the rotation of the vertical shaft 1002, synchronously driving the positioning clamp 1003 to rotate above the accessory. Then, the second motor 1005 controls the movable end support plate 1001 via the front shaft to rotate counterclockwise. At this time, the bottom of the accessory loses support and tilts to one side. The positioning clamp 1003 restrains the accessory from the outside until the accessory is fully tilted and stops. The cylinder 9 pulls the locking frame 804 through the central linkage rod 801. The locking frame 804 simultaneously drives the clamping arms 802 connected to the sides, forcing the clamping arms 802 to clamp towards the center until they contact the sides of the accessory and secure it. Driven continuously by the swing arm 403, the reciprocating conveyor 7 moves the accessory clamped at the bottom into the water-filled active cooling tank 3 on the other side of the workbench 1. During the quenching process, the back-and-forth swinging of the reciprocating conveyor 7 allows the cooling state of the accessory to be controlled.

[0044] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A heat treatment device for processing fan accessories, comprising a workbench (1), a control panel (2), an active cooling tank (3) and a water tank (11), wherein the control panel (2) is arranged at the upper end of the workbench (1), the active cooling tank (3) is opened inside the upper end of the workbench (1), and the water tank (11) is arranged inside the oblique side end of the workbench (1), characterized in that: A vertical driving bracket (4) is provided at the side end of the workbench (1), a first motor (5) is provided at the side end of the vertical driving bracket (4), a water inlet (6) is provided at the side end of the vertical driving bracket (4), a reciprocating conveying mechanism (7) is provided on the side of the vertical driving bracket (4), a vertical positioning clamp (8) is provided on the outer side of the reciprocating conveying mechanism (7) near the bottom, a cylinder (9) is provided on the upper end of the vertical positioning clamp (8), a self-guided oblique placement rack (10) is provided at the upper end of the workbench (1), and an atomizing nozzle (12) and a water pump (13) are provided on the side end of the workbench (1) on the side of the water tank (11); The vertical drive bracket (4) further comprises a bearing collar (401), a transmission shaft (402), a swing arm (403) and a limiting groove (404); the bearing collar (401) is inserted into the interior of the vertical drive bracket (4); the transmission shaft (402) is movably connected to the middle of the bearing collar (401); the swing arm (403) is sleeved on the periphery of the transmission shaft (402); and the limiting groove (404) is provided on an end surface of the vertical drive bracket (4) facing the swing arm (403).

2. The heat treatment device for fan parts processing according to claim 1, characterized in that: The reciprocating conveying mechanism (7) further comprises a transverse slider (701), a transverse slide rail (702), a positioning rod (703) and a connecting bolt (704); the transverse slider (701) is embedded in both sides of the periphery of the transverse slide rail (702) and is embedded in the reciprocating conveying mechanism (7), and a sliding connection relationship is established between them; the transverse slide rail (702) is provided with two groups, and is respectively welded to the side walls of the vertical drive bracket (4).

3. The heat treatment device for fan parts processing according to claim 2, characterized in that: The positioning rod (703) is welded to the end face of the reciprocating conveying mechanism (7) facing the vertical driving bracket (4), and the other end of the positioning rod (703) is embedded in the limiting groove (404), and the connecting bolt (704) is threadedly connected to the end face of the reciprocating conveying mechanism (7) away from the positioning rod (703).

4. The heat treatment device for fan parts processing according to claim 1, characterized in that: The limiting groove (404) is in a semicircular ring structure, and the maximum rotation angle of the swing arm (403) around the center of the transmission shaft (402) is 180°.

5. The heat treatment device for fan parts processing according to claim 1, characterized in that: The vertical positioning clamp (8) further comprises a middle linkage rod (801), a clamp arm (802), a connecting rod (803) and a locking frame (804); the middle linkage rod (801) passes through the middle of the vertical positioning clamp (8), and the upper end thereof is threadedly connected to the cylinder (9); rectangular protrusions are provided on the left and right sides of the vertical positioning clamp (8); the clamp arm (802) is provided in two groups and is rotatably connected to the two sides of the protrusions.

6. The heat treatment device for fan parts processing according to claim 5, characterized in that: The connecting rods (803) are provided with two groups, and the ends of both sides thereof are respectively provided with shaft structures passing through them. The two sides of the shaft structures respectively pass through the side walls of the clamping arms (802) and establish a movable connection relationship with the clamping arms (802). The locking frame (804) is movably connected between the connecting rods (803) on both sides and establishes a movable connection relationship with the connecting rods (803).

7. The heat treatment device for processing fan parts according to claim 7, characterized in that: The locking frame (804), the connecting rod (803) and the clamping arm (802) all adopt a symmetrical parallel double-layer design, wherein the middle part of the locking frame (804) is passed through by the middle linkage rod (801), and the middle linkage rod (801) passes through the locking frame (804) and is provided with a disc-shaped structure at one end thereof.

8. The heat treatment device for fan parts processing according to claim 1, characterized in that: The self-guided oblique placement frame (10) further comprises a movable end placement plate (1001), a vertical shaft (1002), a positioning clamping plate (1003), a steering adjustment motor (1004) and a second motor (1005); a shaft structure is provided at the middle side end of the movable end placement plate (1001); the end facing the second motor (1005) is plugged into the second motor (1005); the vertical shaft (1002) passes through the movable end placement plate (1001) and is clamped to the top of the steering adjustment motor (1004).

9. The heat treatment device for processing fan parts according to claim 8, characterized in that: The positioning clamping plate (1003) is sleeved on the outer end surface of the vertical shaft (1002) and is perpendicular to the vertical shaft (1002). The second motor (1005) is fixedly installed inside the workbench (1). The steering adjustment motor (1004) is embedded inside the side end of the movable end placement plate (1001).

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