A tow winding device

Abstract

The present invention discloses a wire bundle winding device, which comprises a frame, a winding head, a lifting mechanism, a wire cutting and sucking device, a pre-network device, a lower guide plate, an upper guide plate, and a lifting seat; the frame comprises two side walls, a transverse wall connecting the two side walls, and a support portion fixed on the transverse wall; the rear end of the winding head is located between the two side walls; the lifting mechanism comprises a support frame and a lifting drive, the lower end of the support frame is located above the front end of the winding head, the support frame is obliquely fixed to the support portion, and the lifting drive is arranged on the support frame; the wire cutting and sucking device, the pre-network device, and the lower guide plate are located at the lower end of the support frame; the lifting seat is fixed to the movable end of the lifting drive, and the upper guide plate is fixed to the lifting seat.

Description

Technical Field

[0001] The invention relates to the technical field of chemical fiber machinery manufacturing, and in particular to a tow winding device. Background Art

[0002] The tow winding device is a device for winding a plurality of tows spun by a spinning device onto a plurality of winding bobbins.

[0003] In the traditional tow winding device, the spun fibers have low strength, long elongation, and unstable structure, which are far from meeting the requirements of textile processing. The spun fibers must go through a series of post-processing steps to have certain physical-mechanical properties and stable structure to meet the requirements of textile processing. Synthetic fibers are melt-spun, and the winding speed is 3200-3500m / min. The resulting winding yarn is called pre-oriented yarn (POY), which can save the post-stretching process and be directly used for textured yarn processing.

[0004] During the stretching process, the two units of guide plate stretching and winding are required. In the tow winding device, the steel platform is divided into two levels, the upper and lower levels. When the yarn is spun, the upper and lower operators are responsible for the operation. The spinning process takes a long time, produces a lot of waste yarn, and is prone to operating errors. In addition, this spinning winding device occupies a large area and requires a high factory building, which is a great waste of infrastructure projects.

[0005] Therefore, as the profits of chemical fiber spinning devices become increasingly weak, it has become a trend to seek a winding device with a simpler structure, simpler operation and lower energy consumption. Summary of the invention

[0006] The present application provides a filament winding device, which solves the technical problems in the prior art that the winding device is divided into two upper and lower levels by a steel platform, resulting in the need for two operators to perform the threading operation, and the threading process is time-consuming, produces a lot of waste silk and is prone to operating errors. In addition, this device occupies a large area, requires a high factory building height, and is a huge waste for infrastructure projects.

[0007] The present application provides a tow winding device, which includes a frame, a winding head, a lifting mechanism, a wire cutting and sucking device, a pre-network device, a lower guide plate, an upper guide plate, and a lifting seat;

[0008] The frame includes two side walls, a transverse wall connecting the two side walls, and a support portion fixed to the transverse wall;

[0009] The rear end of the winding head is located between the two side walls;

[0010] The lifting mechanism includes a support frame and a lifting driver, the lower end of the support frame is located above the front end of the winding head, the support frame is obliquely fixed on the support portion, and the lifting driver is arranged on the support frame;

[0011] The wire cutting and sucking device, the pre-network device, and the lower guide plate are located at the lower end of the support frame;

[0012] The lifting seat is fixed on the movable end of the lifting driver, and the upper guide plate is fixed on the lifting seat.

[0013] Preferably, the support portion comprises an upper support beam and a lower support beam, the upper support beam and the lower support beam are arranged in parallel, and the first ends are flush and fixed to the cross wall, and the length of the upper support beam is smaller than that of the lower support beam.

[0014] Preferably, the support portion further includes a connecting beam and a diagonal bracing beam, the connecting beam connecting the upper supporting beam and the first end of the lower supporting beam, and the diagonal bracing beam connecting the first end of the lower supporting beam and the second end of the upper supporting beam opposite to the first end.

[0015] Preferably, each of the side walls comprises a rear column, three side wall beams, an upper column and a connecting column; the upper column is arranged in parallel with the rear column, and the upper end is flush with the upper end of the rear column; the three side wall beams are arranged at intervals, and one end is fixed to the rear column, the other end of the side wall beam connected to the top end of the rear column is fixed to the upper column, the other end of the side wall beam connected to the middle part of the rear column is connected to the lower end of the upper column and the upper end of the connecting column at the same time, and the other end of the side wall beam connected to the lower end of the rear column is connected to the lower end of the connecting column.

[0016] Preferably, each of the side walls further comprises a diagonal brace and a reinforcing beam, one end of the diagonal brace is fixed at the connection between the connecting column and the side wall beam, and the other end is fixed at the connection between the rear column and the side wall beam, and the reinforcing beam connects the rear column and the upper column.

[0017] Preferably, the cross wall comprises a front cross beam and a rear cross beam, wherein the front cross beam connects the upper columns of the two side walls, and the rear cross beam connects the rear columns of the two side walls.

[0018] Preferably, there are two front cross beams, which are arranged in parallel, with two ends of one front cross beam fixed to the upper ends of the upper columns of the two side walls, and two ends of the other front cross beam fixed to the lower ends of the upper columns of the two side walls, and one end of the support portion fixed to the two front cross beams. Preferably, a groove is provided on the upper surface of the support frame, and the lifting drive is arranged in the groove of the support frame.

[0019] Preferably, the tow winding device further comprises a wire routing trough, wherein the wire routing trough is located above the winding head, one end of the wire routing trough is fixed to the lower end of the support frame, and the other end of the wire routing trough is supported on the frame.

[0020] The present application also provides a tow winding device, the tow winding device comprising a frame and N groups of winding components, each of the N groups of winding components comprising a winding head, a lifting mechanism, a shearing and sucking wire device, a pre-network device, a lower guide plate, an upper guide plate, and a lifting seat;

[0021] The frame includes two side walls, a transverse wall connecting the two side walls, and N supporting parts fixed on the transverse wall;

[0022] The N winding heads in the N groups of winding components are arranged in parallel, and the rear end of each winding head is located between the two side walls;

[0023] The lifting mechanism of each winding assembly in the N groups of winding assemblies includes a support frame and a lifting drive, the lower end of the support frame is located above the front end of the corresponding winding head, the support frame is obliquely fixed to the corresponding support portion, and the lifting drive is arranged in the groove of the corresponding support frame;

[0024] The wire cutting and sucking device, the pre-network device, and the lower guide plate are located at the lower end of the corresponding support frame;

[0025] The lifting seat is fixed on the movable end of the corresponding lifting driver, and the upper guide plate is fixed on the corresponding lifting seat.

[0026] The beneficial effects of this application are as follows:

[0027] By merging the operations of the drawing and winding units from two levels into one level, the height of the device is greatly reduced, the occupied area is reduced, the production capacity is improved, the engineering infrastructure cost is reduced, and the spinning operation is changed from one operator on each of the upper and lower levels to one person, which greatly simplifies the operating procedures, shortens the spinning time, reduces waste yarn, improves quality and efficiency, and at the same time, only a small amount of compressed air is required in the spinning process, which can reduce the number of employees on the production line and the labor cost of the enterprise, and solves the technical problems in the prior art that the spinning and winding device is divided into two levels, upper and lower levels, by a steel platform, which requires two operators to perform the spinning operation, and the spinning process is long, with much waste yarn and prone to operating errors. In addition, this device occupies a large area, requires a high factory building height, and is a huge waste for infrastructure projects.

[0028] The present application changes the guide wire disk from being installed perpendicular to the operating surface to being installed parallel to the operating surface. The yarn bundle does not need to turn when entering the winding head from the cutting and sucking device, thus eliminating the guide wire element provided for changing the direction of the yarn bundle, reducing the occurrence of yarn breakage and improving the yarn quality.

[0029] The individual spinning positions of the present application are independent, modular, and can be combined at will, which is more flexible. It avoids the shortcomings of mutual restraint between adjacent spinning positions of traditional drafting and winding devices and poor configuration flexibility. The spinning position distance is smaller, so that more spinning position equipment can be installed in the same factory building, thereby improving production capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention.

[0031] Figure 1 A schematic structural diagram of a tow winding device provided in Example 1 of the present application;

[0032] Figure 2 for Figure 1 A side view of a tow winding device in FIG.

[0033] Figure 3 for Figure 1 A front view of the tow winding device in FIG.

[0034] Figure 4 A schematic structural diagram of a filament winding device provided in another embodiment of the present application. DETAILED DESCRIPTION

[0035] The embodiment of the present application provides a filament bundle winding device, which solves the technical problems in the prior art that the winding device is divided into two upper and lower levels by a steel platform, resulting in two operators being required to perform the threading operation, and the threading process is time-consuming, produces a lot of waste silk and is prone to operating errors. In addition, this device occupies a large area, requires a high factory building height, and is a huge waste of infrastructure projects.

[0036] The technical solution in the embodiment of the present application is to solve the above technical problems, and the overall idea is as follows:

[0037] By merging the operations of the drawing and winding units from two levels into one level, the height of the device is greatly reduced, the occupied area is reduced, the production capacity is improved, the engineering infrastructure cost is reduced, and the spinning operation is changed from one operator on each of the upper and lower levels to one person, which greatly simplifies the operating procedures, shortens the spinning time, reduces waste yarn, improves quality and efficiency, and at the same time, only a small amount of compressed air is required in the spinning process, which can reduce the number of employees on the production line and the labor cost of the enterprise, and solves the technical problems in the prior art that the spinning and winding device is divided into two levels, upper and lower levels, by a steel platform, which requires two operators to perform the spinning operation, and the spinning process is long, with much waste yarn and prone to operating errors. In addition, this device occupies a large area, requires a high factory building height, and is a huge waste for infrastructure projects.

[0038] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0039] In order to solve the technical problems in the prior art that the winding device is divided into two levels, upper and lower, by a steel platform, which requires two operators to perform the threading operation, and the threading process takes a long time, produces a lot of waste silk and is prone to operating errors, and the device occupies a large area, requires a high factory building height, and is a huge waste of infrastructure projects, the present application provides a tow winding device.

[0040] Embodiment 1

[0041] like Figure 1-Figure 3 As shown, the tow winding device includes a frame 1, a winding head 2, a lifting mechanism 5, a wire cutting and sucking device 8, a pre-network device 9, a lower guide plate 10, an upper guide plate 4, and a lifting seat 12.

[0042] The frame 1 is used to provide support for the spinning winding device, and specifically, the frame 1 is a frame structure. In this embodiment, the frame 1 includes: two side walls 111, a transverse wall 112 connecting the two side walls 111, and a support portion 113 fixed to the transverse wall 112. The two side walls 111 are arranged in parallel, and one end of the support portion 113 is fixed to the transverse wall 112.

[0043] The two side walls 111 are both frame-shaped. Specifically, each side wall 111 includes a rear column 114, three side wall beams 115, an upper column 116 and a connecting column 117. The upper column 116 is arranged parallel to the rear column 114, and the upper end is flush with the upper end of the rear column 114. The three side wall beams 115 are arranged at intervals, and one end is fixed to the rear column 114, the other end of the side wall beam 115 connected to the top of the rear column 114 is fixed to the upper column 116, the other end of the side wall beam 115 connected to the middle of the rear column 114 is connected to the lower end of the upper column 116 and the upper end of the connecting column 117 at the same time, and the other end of the side wall beam 115 connected to the lower end of the rear column 114 is connected to the lower end of the connecting column 117, so that each side wall 111 forms a structural shape with a lower portion roughly in a right-angle trapezoid shape and an upper portion in a rectangular shape. Furthermore, in order to improve the rigidity and stability of the side wall, each side wall 111 further includes a diagonal brace 118 and a reinforcing crossbeam 119, one end of the diagonal brace 118 is fixed to the connection between the connecting column 117 and the side wall crossbeam 115, and the other end is fixed to the connection between the rear column 114 and the side wall crossbeam 115, so that the connecting column 117, the diagonal brace 118 and the side wall crossbeam 115 form a triangular support structure. The reinforcing crossbeam 119 connects the rear column 114 and the upper column 116 to prevent the side wall 111 from deformation.

[0044] The transverse wall 112 is generally in the shape of a frame, and includes a front crossbeam 121 and a rear crossbeam 122, wherein the front crossbeam 121 connects the upper columns 116 of the two side walls 111, and the rear crossbeam 122 connects the rear columns 114 of the two side walls 111. In this embodiment, there are two front crossbeams 121, which are arranged in parallel, with two ends of one front crossbeam 121 fixed to the upper ends of the upper columns 116 of the two side walls 111, and two ends of the other front crossbeam 121 fixed to the lower ends of the upper columns 116 of the two side walls 111. In other embodiments, the number of front crossbeams 121 can be set as needed, such as three, four, etc. In this embodiment, there is only one rear cross beam 122, and both ends of the rear cross beam 122 are fixed to the middle of the rear columns 114 of the two side walls 111. In other embodiments, the number of rear cross beams 122 can also be set as needed, such as two, three, four, etc.

[0045] One end of the support portion 113 is fixed to the front crossbeam 121 of the cross wall 112, and the overall structure is narrow at the upper end and wide at the lower end. Specifically, the support portion 113 includes an upper support crossbeam 123, a lower support crossbeam 124, a connecting beam 125 and an oblique bracing beam 126. The upper support crossbeam 123 and the lower support crossbeam 124 are arranged in parallel, and the first ends are flush, and the length of the upper support crossbeam 123 is shorter than the lower support crossbeam 124. The connecting beam 125 connects the first ends of the upper support crossbeam 123 and the lower support crossbeam 124, and the oblique bracing beam 126 connects the first end of the lower support crossbeam 124 and the second end of the upper support crossbeam 123 opposite to the first end.

[0046] The rear end of the winding head 2 is located between two side walls 111 of the frame 1 .

[0047] The lifting mechanism 5 is located at the upper front end of the winding head 2 and is fixed to the frame 1, specifically to the other end of the support portion 113. Specifically, the lifting mechanism 5 includes a support frame 51 and a lifting driver 52. The support frame 51 is fixed to the support portion 113. Specifically, the support frame 51 is fixed to the ends of the upper support beam 123 and the lower support beam 124 away from the cross wall 112. Since the length of the lower support beam 124 is greater than that of the upper support beam 123, the support frame 51 is tilted and fixed to the support portion 113 to fix the support frame 51 at an angle that satisfies the winding.

[0048] Specifically, in this embodiment, a groove is provided on the support frame 51, and the groove is provided on the upper surface of the support frame 51, and the lifting driver 52 is arranged in the groove of the support frame 51. Further, in this embodiment, the lifting driver 52 is a cylinder, and the use of the cylinder can achieve lifting quickly and stably. Further, the cylinder is a double-guide rodless cylinder to reduce the installation space occupied. In other embodiments, the lifting driver 52 can also use a motor or the like to drive the lifting rod to achieve lifting.

[0049] The lifting seat 12 is fixed on the movable end of the lifting driver 52 . The lifting seat 12 can be raised or lowered under the drive of the lifting driver 52 . The upper guide plate 4 is fixed on the lifting seat 12 .

[0050] The wire cutting and sucking device 8, the pre-network device 9, and the lower guide plate 10 are located at the lower end of the support frame 51 and are arranged in sequence according to the direction of the wire bundle. When the lifting seat 12 is at the initial position (lowest position), the upper guide plate 4 is behind the lower guide plate 10. After the wire bundle is wound on the wire cutting and sucking device 8, the pre-network device 9, the lower guide plate 10, and the upper guide plate 4, it enters the winding head 2 for winding.

[0051] Furthermore, the filament winding device further comprises a shell 11 fixed to the lower end of the support frame 51, and the wire cutting and sucking device 8, the pre-network device 9 and the lower guide plate 10 are sequentially arranged on the side of the shell 11 according to the direction of the filament bundle.

[0052] In addition, the filament winding device also includes a wiring groove 3, which is located above the winding head 2, one end of which is fixed to the lower end of the support frame 51, and the other end is supported on the frame 1. The wiring of the filament winding device can be set in the wiring groove 3 to connect the wire cutting and suction device 8, the pre-network device 9, etc.

[0053] During winding, the filament bundle coming out of the spinning assembly passes through the shearing and sucking device 8, and then enters the pre-network device 9 for oiling the filament bundle. After the oiling is completed, it is first wound around the lower guide disk 10, and then around the upper guide disk 4; when the winding operation is performed on the upper guide disk 4, the upper guide disk 4 is pulled to the lowest position by the lifting mechanism 5, which is the rear position of the lower guide disk 10; after the winding is completed and the head is successfully produced on the winding head 2, the lifting mechanism 5 pulls the upper guide disk 4 to the highest position (winding position); after the filament bundle is stretched by the lower guide disk 10 and the upper guide disk 4, it enters the winding head 2 to complete the winding of the finished product.

[0054] By merging the operations of the drawing and winding units from two levels into one level, the height of the device is greatly reduced, the occupied area is reduced, the production capacity is improved, the engineering infrastructure cost is reduced, and the spinning operation is changed from one operator on each of the upper and lower levels to one person, which greatly simplifies the operating procedures, shortens the spinning time, reduces waste yarn, improves quality and efficiency, and at the same time, only a small amount of compressed air is required in the spinning process, which can reduce the number of employees on the production line and the labor cost of the enterprise, and solves the technical problems in the prior art that the spinning and winding device is divided into two levels, upper and lower levels, by a steel platform, which requires two operators to perform the spinning operation, and the spinning process is long, with much waste yarn and prone to operating errors. In addition, this device occupies a large area, requires a high factory building height, and is a huge waste for infrastructure projects.

[0055] The present application changes the guide wire disk from being installed perpendicular to the operating surface to being installed parallel to the operating surface. The yarn bundle does not need to turn when entering the winding head from the shearing and suction device, thus eliminating the guide wire element provided to change the direction of the yarn bundle, reducing the occurrence of hairy yarn breakage and improving the yarn quality.

[0056] The individual spinning positions of the present application are independent, modular, and can be combined at will, which is more flexible. It avoids the shortcomings of mutual restraint between adjacent spinning positions of traditional drafting and winding devices and poor configuration flexibility. The spinning position distance is smaller, so that more spinning position equipment can be installed in the same factory building, thereby improving production capacity.

[0057] Embodiment 2.

[0058] Based on the same inventive concept, the present application also provides a tow winding device. Figure 4 The only difference between the filament winding device of the present embodiment and the filament winding device in Example 1 is that the number of support parts 113 of the frame of the filament winding device of the present application is different. In the present embodiment, the number of support parts 113 is 4, and they are fixed in parallel on the cross wall 112. Correspondingly, the number of the winding head 2, the lifting mechanism 5, the wire cutting and suction device 8, the pre-network device 9, the lower guide plate 10, the upper guide plate 4, and the lifting seat 12 is the same as the number of the support parts 113, which is also 4. In other embodiments, the support parts can also be set as needed, such as being set to an integer of 2, 3, 5, etc.

[0059] That is, the tow winding device comprises a frame 1 and N groups of winding components, each of the N groups of winding components comprises a winding head 2, a lifting mechanism 5, a wire cutting and sucking device 8, a pre-network device 9, a lower guide plate 10, an upper guide plate 4, and a lifting seat 12;

[0060] The frame 1 includes two side walls 111, a transverse wall 112 connecting the two side walls 111, and N supporting parts 113 fixed on the transverse wall 112;

[0061] The N winding heads 2 in the N groups of winding components are arranged in parallel, and the rear end of each winding head 2 is located between the two side walls 111;

[0062] The lifting mechanism 5 of each winding assembly in the N groups of winding assemblies includes a support frame 51 and a lifting driver 52, the lower end of the support frame 51 is located above the front end of the corresponding winding head 2, the support frame 51 is obliquely fixed to the corresponding support portion 113, and the lifting driver 52 is arranged in the groove of the corresponding support frame 51;

[0063] The wire cutting and sucking device 8, the pre-network device 9, and the lower guide plate 10 are located at the lower end of the corresponding support frame 51;

[0064] The lifting seat 12 is fixed on the movable end of the corresponding lifting driver 52 , and the upper guide plate 4 is fixed on the corresponding lifting seat 12 .

[0065] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0066] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A tow winding device, characterized in that: The tow winding device comprises a frame, a winding head, a lifting mechanism, a wire cutting and sucking device, a pre-network device, a lower guide plate, an upper guide plate, and a lifting seat; The frame includes two side walls, a transverse wall connecting the two side walls, and a support portion fixed to the transverse wall; The rear end of the winding head is located between the two side walls; The lifting mechanism includes a support frame and a lifting driver, the lower end of the support frame is located above the front end of the winding head, the support frame is obliquely fixed on the support portion, and the lifting driver is arranged on the support frame; The wire cutting and sucking device, the pre-network device, and the lower guide plate are located at the lower end of the support frame; The lifting seat is fixed on the movable end of the lifting driver, and the upper guide plate is fixed on the lifting seat; Each of the side walls comprises a rear column, three side wall beams, an upper column and a connecting column. The upper column is arranged parallel to the rear column, and the upper end is flush with the upper end of the rear column; the three side wall beams are arranged at intervals, and one end is fixed to the rear column, the other end of the side wall beam connected to the top end of the rear column is fixed to the upper column, the other end of the side wall beam connected to the middle of the rear column is connected to the lower end of the upper column and the upper end of the connecting column at the same time, and the other end of the side wall beam connected to the lower end of the rear column is connected to the lower end of the connecting column; The cross wall comprises a front cross beam and a rear cross beam, wherein the front cross beam connects the upper columns of the two side walls, and the rear cross beam connects the rear columns of the two side walls; The number of the front cross beams is two, and the two front cross beams are arranged in parallel. The two ends of one front cross beam are fixed to the upper ends of the upper columns of the two side walls, and the two ends of the other front cross beam are fixed to the lower ends of the upper columns of the two side walls, and one end of the support part is fixed to the two front cross beams; A groove is provided on the upper surface of the support frame, and the lifting driver is arranged in the groove of the support frame.

2. The winding device according to claim 1, characterized in that The support portion includes an upper support beam and a lower support beam, the upper support beam and the lower support beam are arranged in parallel, and the first ends are flush and fixed to the cross wall, and the length of the upper support beam is smaller than that of the lower support beam.

3. The winding device according to claim 2, characterized in that The support portion further includes a connecting beam and an oblique bracing beam, wherein the connecting beam connects the upper supporting beam and a first end of the lower supporting beam, and the oblique bracing beam connects the first end of the lower supporting beam and a second end of the upper supporting beam opposite to the first end.

4. The winding device according to claim 1, characterized in that Each of the side walls also includes a diagonal brace and a reinforcing beam. One end of the diagonal brace is fixed to the connection between the connecting column and the side wall beam, and the other end is fixed to the connection between the rear column and the side wall beam. The reinforcing beam connects the rear column and the upper column.

5. The winding device according to claim 1, characterized in that The tow winding device also includes a wire routing groove, which is located above the winding head. One end of the wire routing groove is fixed to the lower end of the support frame, and the other end is supported on the frame.

6. A tow winding device, characterized in that: The tow winding device comprises a frame and N groups of winding components, each of the N groups of winding components comprises a winding head, a lifting mechanism, a shearing and sucking wire device, a pre-network device, a lower guide plate, an upper guide plate, and a lifting seat; The frame includes two side walls, a transverse wall connecting the two side walls, and N supporting parts fixed on the transverse wall; The N winding heads in the N groups of winding components are arranged in parallel, and the rear end of each winding head is located between the two side walls; The lifting mechanism of each winding assembly in the N groups of winding assemblies includes a support frame and a lifting drive, the lower end of the support frame is located above the front end of the corresponding winding head, the support frame is obliquely fixed to the corresponding support portion, and the lifting drive is arranged in the groove of the corresponding support frame; The wire cutting and sucking device, the pre-network device, and the lower guide plate are located at the lower end of the corresponding support frame; The lifting seat is fixed on the movable end of the corresponding lifting driver, and the upper guide plate is fixed on the corresponding lifting seat; Each of the side walls comprises a rear column, three side wall beams, an upper column and a connecting column. The upper column is arranged parallel to the rear column, and the upper end is flush with the upper end of the rear column; the three side wall beams are arranged at intervals, and one end is fixed to the rear column, the other end of the side wall beam connected to the top end of the rear column is fixed to the upper column, the other end of the side wall beam connected to the middle of the rear column is connected to the lower end of the upper column and the upper end of the connecting column at the same time, and the other end of the side wall beam connected to the lower end of the rear column is connected to the lower end of the connecting column; The cross wall comprises a front cross beam and a rear cross beam, wherein the front cross beam connects the upper columns of the two side walls, and the rear cross beam connects the rear columns of the two side walls; The number of the front cross beams is two, and the two front cross beams are arranged in parallel. The two ends of one front cross beam are fixed to the upper ends of the upper columns of the two side walls, and the two ends of the other front cross beam are fixed to the lower ends of the upper columns of the two side walls, and one end of the support part is fixed to the two front cross beams; A groove is provided on the upper surface of the support frame, and the lifting driver is arranged in the groove of the support frame.

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