Side top device for faucet

Abstract

The utility model discloses a side jacking device for a faucet. The side jacking device comprises a positioning mechanism; a pressing power mechanism; the pressing mechanism is arranged opposite to the positioning mechanism in the mode that the pressing mechanism can be close to or away from the positioning mechanism, the pressing mechanism and the positioning mechanism define a clamping space together, and the pressing power mechanism applies driving force to the pressing mechanism so that the positioning mechanism and the pressing mechanism can abut against the two ends of the faucet body correspondingly; the faucet is clamped between the positioning mechanism and the pressing mechanism; the first limiting mechanism is detachably arranged on the right side or the left side of the clamping space so as to be arranged on the right side or the left side of the faucet body when the faucet is in the first posture or the second posture and connected to a water outlet nozzle of the faucet. And the second limiting mechanism is arranged below the clamping space so as to be connected to a water outlet nozzle of the faucet when the faucet is in the third posture. The clamping device can be used for clamping and fixing the water faucet in various postures so as to finish various processing of water faucet products.

Description

Technical Field

[0001] The utility model relates to the field of machinery, in particular to a side top device for a faucet. Background Art

[0002] At present, the market has increasingly stringent requirements on the appearance of faucet products. In order to ensure that faucet products have a standard appearance, faucet products must be peeled. Peeling also helps to reduce the workload of grinding and polishing faucet products. In addition, the main structure of the faucet product must be drilled and milled. In actual operation, in order to achieve the above three processing procedures, three different fixtures need to be provided to fix the faucet products. Replacing a fixture for each processing procedure not only leads to high production costs, but also affects processing efficiency. In addition, the appearance and size of different faucet products vary greatly, and different fixtures need to be replaced for different faucet products, which also leads to high pressure on the production of fixtures and high production costs. Utility Model Content

[0003] An object of the present invention is to solve at least the above problems and / or disadvantages and to provide at least the advantages to be described below.

[0004] One object of the utility model is to provide a side top device for a faucet, which can clamp and fix the faucet in various postures, so as to complete various processing procedures of the faucet product without replacing the side top device.

[0005] In order to achieve these purposes and other advantages according to the utility model, a side top device for a faucet is provided, comprising:

[0006] Positioning mechanism;

[0007] Compressing power mechanism;

[0008] a clamping mechanism, which is arranged opposite to the positioning mechanism in a manner that it can be close to or away from the positioning mechanism, and defines a clamping space together with the positioning mechanism, and the clamping power mechanism applies a driving force to the clamping mechanism, so that the positioning mechanism and the clamping mechanism respectively abut against two ends of the faucet body, thereby clamping the faucet between the positioning mechanism and the clamping mechanism;

[0009] a first limiting mechanism, which is detachably disposed on the right side or the left side of the clamping space, so as to be disposed on the right side or the left side of the faucet body when the faucet is in the first posture or the second posture, and is connected to the water outlet of the faucet; and

[0010] A second limiting mechanism is arranged below the clamping space to be connected to the water outlet of the faucet when the faucet is in a third posture.

[0011] Preferably, in the side-pushing device for a faucet, the positioning mechanism comprises a positioning base and a positioning column detachably arranged on the positioning base, and when the positioning mechanism presses against the water inlet end of the faucet body, the positioning column is inserted into the water inlet end of the faucet body, and the positioning column is one of a plurality of positioning columns with different sizes that matches the size of the water inlet end of the faucet body.

[0012] Preferably, in the side-pushing device for the faucet, the pressing mechanism includes a pressing base and a pressing column detachably arranged on the pressing base, and when the pressing mechanism presses against the valve core end of the faucet body, the pressing column is inserted into the valve core end of the faucet body, and the pressing column is one of a plurality of pressure columns with different sizes that matches the size of the valve core end of the faucet body.

[0013] Preferably, in the side top device for the faucet, the first limiting mechanism includes a first limiting base and a first limiting column detachably arranged on the first limiting base, and when the first limiting mechanism is connected to the water outlet of the faucet, the first limiting column is inserted into the water outlet of the faucet, and the first limiting column is one of a plurality of first limiting columns with different sizes that matches the size of the water outlet of the faucet.

[0014] Preferably, in the side top device for the faucet, the second limiting mechanism includes a second limiting base and a second limiting column detachably arranged on the second limiting base, when the second limiting mechanism is connected to the water outlet of the faucet, the second limiting column is connected to the water outlet of the faucet, and the second limiting column is one of a plurality of second limiting columns with different sizes that matches the size of the water outlet of the faucet.

[0015] Preferably, in the side top device for the faucet, the second limiting base is a limiting plate, and the limiting plate is provided with a U-shaped limiting groove; when the faucet is in the third posture, one end of the second limiting column is threadedly connected to the water outlet of the faucet, and the other end is inserted into the limiting groove.

[0016] Preferably, the side top device for the faucet further includes a first bottom plate, the clamping space is arranged above the first bottom plate, and the first bottom plate is provided with an opening extending through from top to bottom at a position corresponding to the clamping space; the second limiting mechanism is arranged such that: when the faucet is in the third posture, the water outlet of the faucet extends downward through the opening, and the second limiting mechanism is connected to the water outlet of the faucet.

[0017] Preferably, in the side top device for the faucet, the first limiting mechanism is arranged on the first bottom plate, and the first bottom plate is respectively provided with a group of positioning holes on the left and right sides of the clamping space, each group of positioning holes includes a plurality of rows of positioning holes radially distributed relative to the center of a circle, and each row of positioning holes includes a plurality of positioning holes arranged radially along the circle; the first limiting base has a pair of feet, and the pair of feet are respectively provided with an arc hole; wherein, when the first limiting mechanism is detachably connected to the right or left side of the clamping space, the arc holes of the pair of feet are aligned with two positioning holes in one group of positioning holes and are connected by a pair of bolts.

[0018] The utility model at least has the following beneficial effects:

[0019] The embodiment of the utility model provides a side-lift device for a faucet, comprising: a positioning mechanism; a clamping power mechanism; a clamping mechanism, which is arranged relative to the positioning mechanism in a manner that it can be close to or away from the positioning mechanism, and defines a clamping space together with the positioning mechanism, the clamping power mechanism applies a driving force to the clamping mechanism, so that the positioning mechanism and the clamping mechanism respectively press against the two ends of the faucet body, thereby clamping the faucet between the positioning mechanism and the clamping mechanism; a first limiting mechanism, which is detachably arranged on the right or left side of the clamping space, so that when the faucet is in the first posture or the second posture, it is arranged on the right or left side of the faucet body and connected to the water outlet of the faucet; and a second limiting mechanism, which is arranged below the clamping space, so that when the faucet is in the third posture, it is connected to the water outlet of the faucet. The side-lift device for a faucet provided by the utility model can clamp and fix the faucet when the faucet is in various postures, so as to complete various processing procedures of the faucet product without replacing the side-lift device.

[0020] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1This is a schematic structural diagram of a side top device for a faucet in an embodiment of the utility model;

[0022] Figure 2 It is a structural schematic diagram of a side top device for a faucet (the faucet is in a first posture) in an embodiment of the utility model;

[0023] Figure 3 It is a structural schematic diagram of another angle of the side top device for the faucet (the faucet is in the first posture) in the embodiment of the utility model;

[0024] Figure 4 It is a structural schematic diagram of the side top device for the faucet in the embodiment of the utility model (the faucet is in the third posture);

[0025] Figure 5 It is a structural schematic diagram of a side top device (the first bottom plate is not shown) for a faucet in an embodiment of the utility model (the faucet is in a third posture);

[0026] Figure 6 It is a structural schematic diagram of the side top device for the faucet in the peeling process (the faucet is in the first posture) in the embodiment of the utility model;

[0027] Figure 7 It is a structural schematic diagram of the side top device for the faucet in the embodiment of the utility model during the drilling process (the faucet is in the first posture);

[0028] Figure 8 It is a structural schematic diagram of the side top device for the faucet in the embodiment of the utility model during the groove milling process (the faucet is in the third posture). DETAILED DESCRIPTION

[0029] The present invention will be further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0030] like Figures 1 to 8As shown, an embodiment of the utility model provides a side-pushing device for a faucet 23, comprising: a positioning mechanism; a clamping power mechanism 17; a clamping mechanism, which is arranged relative to the positioning mechanism in a manner that it can approach or move away from the positioning mechanism, and together with the positioning mechanism, defines a clamping space, the clamping power mechanism 17 applies a driving force to the clamping mechanism, so that the positioning mechanism and the clamping mechanism respectively press against the two ends of the faucet body 24, thereby clamping the faucet 23 between the positioning mechanism and the clamping mechanism; a first limiting mechanism, which is detachably arranged on the right side or left side of the clamping space, so that when the faucet 23 is in the first posture or the second posture, it is arranged on the right side or the left side of the faucet body 24, and is connected to the water outlet 25 of the faucet 23; and a second limiting mechanism, which is arranged below the clamping space, so that when the faucet 23 is in the third posture, it is connected to the water outlet 25 of the faucet 23.

[0031] Specifically, when the faucet 23 is peeled, drilled or milled, the side top device must be installed in the machining center and located below the peeling tool 33, drilling tool 32 or milling tool 34 of the machining center. The side top device cooperates with the peeling tool 33, drilling tool 32 or milling tool 34 of the machining center to achieve corresponding processing.

[0032] When the peeling process is performed, first, the first limiting mechanism is installed on the right side of the clamping space. The faucet body 24 is placed between the positioning mechanism and the clamping mechanism, and the water outlet 25 of the faucet 23 is facing the right side. At this time, the posture of the faucet 23 in the side top device is the first posture. Start the clamping power mechanism 17, drive the clamping mechanism toward the positioning mechanism, so that the positioning mechanism and the clamping mechanism are respectively pressed against the two ends of the faucet body 24, to achieve the clamping and fixing of the faucet 23, and at the same time, it is connected to the water outlet 25 of the faucet 23 through the first limiting mechanism to limit the water outlet 25. The machining center is equipped with a peeling tool 33, and the machining center is started. The peeling tool 33 is used to peel the upward side surface of the faucet 23. In addition, in this posture, the peeling tool 33 can also be replaced by a drilling tool 32, and the faucet 23 is drilled by the drilling tool 32. Afterwards, the first limiting mechanism is opened to release the connection between the first limiting mechanism and the water outlet 25, and the pressing power mechanism 17 drives the pressing mechanism to move backward, and the faucet 23 is removed from between the pressing mechanism and the positioning mechanism.

[0033] Then, the first limiting mechanism is installed on the left side of the clamping space, and the faucet 23 is clamped and fixed by the positioning mechanism and the clamping mechanism, and the first limiting mechanism is connected to the water outlet 25 again. At this time, the posture of the faucet 23 in the side top device is the second posture, that is, it is actually a posture formed by rotating 180 degrees around its own axis relative to the first posture. The machining center is started, and the peeling tool 33 is used to peel the upward side surface of the faucet 23. In addition, in this posture, the peeling tool 33 can also be replaced with a drilling tool 32, and the faucet 23 can be drilled by the drilling tool 32.

[0034] When performing the milling process, place the faucet body 24 between the positioning mechanism and the clamping mechanism, and make the water outlet 25 of the faucet 23 face downward. At this time, the posture of the faucet 23 in the side top device is the third posture. Start the clamping power mechanism 17, drive the clamping mechanism toward the positioning mechanism, so that the positioning mechanism and the clamping mechanism are respectively pressed against the two ends of the faucet body 24, to achieve the clamping and fixing of the faucet 23, and at the same time connect to the water outlet 25 of the faucet 23 through the second limiting mechanism to limit the water outlet 25. The machining center is equipped with a milling tool 34, and the machining center is started, and the milling tool 34 is used to perform milling process on the upward side surface of the faucet 23.

[0035] Based on this, the side top device for the faucet 23 provided by the utility model can clamp and fix the faucet 23 when the faucet 23 is in various postures, so as to complete various processing procedures of the faucet 23 product without replacing the side top device.

[0036] The side top mechanism includes a frame, and the frame includes a first bottom plate 5 and a second bottom plate 7 and a column 22 arranged between the first bottom plate 5 and the second bottom plate 7.

[0037] In a preferred embodiment, the side-pushing device for the faucet 23, the positioning mechanism includes a positioning base 1 and a positioning column 2 detachably arranged on the positioning base 1, when the positioning mechanism presses against the water inlet end of the faucet body 24, the positioning column 2 is inserted into the water inlet end of the faucet body 24, and the positioning column 2 is one of a plurality of positioning columns 2 with different sizes that matches the size of the water inlet end of the faucet body 24.

[0038] The sizes of the faucet body 24 are different in different faucet products 23. A plurality of positioning columns 2 of different sizes are provided. When the positioning mechanism is used to position the faucet body 24, a positioning column 2 of matching size can be selected to ensure that the positioning column 2 can be plugged into the water inlet end of the faucet body 24, maintain a stable connection, and avoid shaking of the faucet 23 during processing. Based on this design, only different positioning columns 2 need to be designed for different faucets 23, without replacing other main components of the side top device, which can reduce the pressure of mold production and save mold production costs.

[0039] Furthermore, the installation position of the positioning mechanism on the first base plate 5 can be adjusted as needed. Specifically, the installation position of the positioning mechanism is adjusted to a position closer to the clamping mechanism or a position farther away from the clamping mechanism to reduce or increase the initial space size of the clamping space. Multiple groups of first mounting holes arranged side by side can be opened on the first base plate 5. When the positioning base 1 is connected to a row of first mounting holes closer to the clamping mechanism by bolts, the initial space of the clamping space is smaller; otherwise, it is larger.

[0040] In a preferred embodiment, in the side top device for the faucet 23, the clamping mechanism includes a clamping base 6 and a pressure column 4 detachably arranged on the clamping base 6, when the clamping mechanism presses against the valve core end of the faucet body 24, the pressure column 4 is inserted into the valve core end of the faucet body 24, and the pressure column 4 is one of a plurality of pressure columns 4 with different sizes that matches the size of the valve core end of the faucet body 24.

[0041] A plurality of pressure columns 4 of different sizes are provided. When the pressing mechanism is used to clamp and fix the faucet body 24, a pressure column 4 of matching size can be selected to ensure that the pressure column 4 can be plugged into the water inlet end of the faucet body 24 to maintain a stable connection. Based on this design, only different pressure columns 4 need to be designed for different faucets 23, without replacing other main components of the side top device, which can reduce the pressure of mold manufacturing and save mold manufacturing costs.

[0042] Furthermore, a slide rail may be provided on the first bottom plate 5, and the clamping base 6 is provided on the first bottom plate 5 in a manner movable along the slide rail. When the clamping power mechanism 17 outputs a driving force, the clamping mechanism moves along the slide rail, thereby approaching or moving away from the positioning mechanism.

[0043] The clamping power mechanism 17 may be a cylinder fixed on a cylinder sleeve 18. The power output shaft of the clamping power mechanism 17 is connected to the lower end of the Y-shaped joint 16, the lower end of the connecting rod 20 is rotatably connected to the upper end of the Y-shaped joint 16, the connecting rod 20 is swingably inserted into a sleeve 21, the sleeve 21 is arranged on the first bottom plate, and the connecting rod 20 is connected to the clamping mechanism. When the clamping power mechanism 17 outputs driving force, the Y-shaped joint 16 drives the connecting rod 20 to swing back and forth, and the connecting rod 20 drives the clamping mechanism to move back and forth.

[0044] In a preferred embodiment, in the side top device for the faucet 23, the first limiting mechanism includes a first limiting base 10 and a first limiting column 26 detachably arranged on the first limiting base 10, and when the first limiting mechanism is connected to the water outlet 25 of the faucet 23, the first limiting column 26 is inserted into the water outlet 25 of the faucet 23, and the first limiting column 26 is one of a plurality of first limiting columns 26 with different sizes that matches the size of the water outlet 25 of the faucet 23.

[0045] A plurality of first limiting columns 26 of different sizes are provided. When the first limiting mechanism is used to limit the water outlet 25 of the faucet 23, a first limiting column 26 of matching size can be selected to ensure that the first limiting column 26 can be plugged into the water outlet 25, maintain a stable connection, and avoid shaking of the faucet 23 during processing. Based on this design, only different first limiting columns 26 need to be designed for different faucets 23, without replacing other main components of the side top device, which can reduce the pressure of mold production and save mold production costs.

[0046] Further, the first limiting column 26 can be slidably arranged on the first limiting base 10. Specifically, the first limiting base 10 is provided with a slideway, and the first limiting column 26 is slidably and rotatably arranged in the slideway. The upper part and the side of the first limiting base 10 are respectively provided with an upper slide groove 15 and a side slide groove 11, the front end of the upper slide groove 15 is connected to the upper end of the side slide groove 11, and the two slide grooves are connected to the slideway, the lever 9 can slide along the two slide grooves, and the inner end of the lever 9 is detachably connected to the first limiting column 26 (for example, threaded connection). By moving the lever 9 forward along the upper slide groove 15, the first limiting column 26 can be moved forward along the slideway. When the lever 9 moves to the front end of the upper slide groove 15, the lever 9 moves downward along the side slide groove 11, so that the first limiting column 26 rotates and locks the first limiting column 26 in the current position, thereby realizing the limitation of the water outlet 25. When the lever 9 moves along the side slide groove 11 to the upper end of the side slide groove 11, the first limiting column 26 rotates, the lever 9 enters the upper slide groove 15, moves to the rear end of the upper slide groove 15, and the first limiting column 26 slides backward, so that the first limiting column 26 is separated from the water outlet 25, and the limiting of the water outlet 25 is released. The above structure of the first limiting mechanism is similar to the structure of a door bolt.

[0047] In a preferred embodiment, in the side top device for the faucet 23, the second limiting mechanism includes a second limiting base and a second limiting column 28 detachably arranged on the second limiting base, and when the second limiting mechanism is connected to the water outlet 25 of the faucet 23, the second limiting column 28 is connected to the water outlet 25 of the faucet 23, and the second limiting column 28 is one of a plurality of second limiting columns 28 with different sizes that matches the size of the water outlet 25 of the faucet 23.

[0048] A plurality of second limiting columns 28 of different sizes are provided. When the second limiting mechanism is used to limit the water outlet 25 of the faucet 23, a second limiting column 28 of matching size can be selected to ensure that the second limiting column 28 can be stably connected to the water outlet 25 to prevent the faucet 23 from shaking during processing. Based on this design, only different second limiting columns 28 need to be designed for different faucets 23, without replacing other main components of the side top device, which can reduce the pressure of mold production and save mold production costs.

[0049] The installation position of the second limiting mechanism on the second base plate 7 can be adjusted as needed. A plurality of groups of second mounting holes arranged side by side can be opened on the second base plate 7, and the second limiting base is connected to any group of second mounting holes by bolts to change the installation position of the second limiting mechanism on the second base plate 7.

[0050] In a preferred embodiment, in the side top device for the faucet 23, the second limiting base is a limiting plate 19, and the limiting plate 19 is provided with a U-shaped limiting groove 14; when the faucet 23 is in the third posture, one end of the second limiting column 28 is threadedly connected to the water outlet 25 of the faucet 23, and the other end is inserted into the limiting groove 14.

[0051] The second limiting column 28 is inserted into the limiting groove 14 to prevent the faucet 23 from shaking left and right during the processing.

[0052] In a preferred embodiment, the side top device for the faucet 23 also includes a first bottom plate 5, the clamping space is arranged above the first bottom plate 5, and the first bottom plate 5 is provided with an opening 3 which passes through from top to bottom at a position corresponding to the clamping space; the second limiting mechanism is arranged as follows: when the faucet 23 is in the third posture, the water outlet 25 of the faucet 23 extends downward through the opening 3, and the second limiting mechanism is connected to the water outlet 25 of the faucet 23.

[0053] In a preferred embodiment, in the side top device for the faucet 23, the first limiting mechanism is arranged on the first bottom plate 5, and the first bottom plate 5 is respectively provided with a group of positioning holes 13 on the left and right sides of the clamping space, each group of positioning holes 13 includes multiple rows of positioning holes 13 radially distributed relative to the center of a circle, and each row of positioning holes 13 includes multiple positioning holes 13 arranged radially along the circle; the first limiting base 10 has a pair of feet, and the pair of feet are respectively provided with an arc hole 12; wherein, when the first limiting mechanism is detachably connected to the right or left side of the clamping space, the arc holes 12 of the pair of feet are aligned with two positioning holes 13 in one group of positioning holes 13, and are connected by a pair of bolts.

[0054] For different faucets 23, the angles formed by their water spouts 25 relative to the main body are different. In order to limit the water spouts 25 of faucets 23 with different shapes, the installation angle of the first limiting mechanism relative to the clamping space can be adjusted. Specifically, by selecting any two positioning holes 13 in a group of positioning holes 13, the installation angle of the first limiting mechanism is changed. At the same time, the connecting holes of a pair of feet of the first limiting base 10 are arc holes 12. By rotating the first limiting base 10, the pair of arc holes 12 can always be aligned with the two selected positioning holes 13. Therefore, based on this design, the first limiting base 10 can be rotated to further adjust the installation angle of the first limiting mechanism.

[0055] In summary, the side top device for a faucet provided by the utility model can clamp and fix the faucet when the faucet is in various postures, so as to complete various processing procedures of the faucet product without replacing the side top device.

[0056] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and the embodiments. It can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily realized. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described here.

Claims

1. A side top device for a faucet, characterized in that: include: Positioning mechanism; Compressing power mechanism; a clamping mechanism, which is arranged opposite to the positioning mechanism in a manner that it can be close to or away from the positioning mechanism, and defines a clamping space together with the positioning mechanism, and the clamping power mechanism applies a driving force to the clamping mechanism, so that the positioning mechanism and the clamping mechanism respectively abut against two ends of the faucet body, thereby clamping the faucet between the positioning mechanism and the clamping mechanism; A first limiting mechanism, which is detachably arranged on the right side or the left side of the clamping space, so as to be arranged on the right side or the left side of the faucet body when the faucet is in the first posture or the second posture, and connected to the water outlet of the faucet; as well as A second limiting mechanism is arranged below the clamping space to be connected to the water outlet of the faucet when the faucet is in a third posture.

2. The side top device for a faucet according to claim 1, characterized in that: The positioning mechanism includes a positioning base and a positioning column detachably arranged on the positioning base. When the positioning mechanism abuts against the water inlet end of the faucet body, the positioning column is inserted into the water inlet end of the faucet body. The positioning column is one of a plurality of positioning columns with different sizes that matches the size of the water inlet end of the faucet body.

3. The side top device for a faucet according to claim 1, characterized in that: The clamping mechanism includes a clamping base and a pressure column detachably arranged on the clamping base. When the clamping mechanism presses against the valve core end of the faucet body, the pressure column is inserted into the valve core end of the faucet body. The pressure column is one of a plurality of pressure columns with different sizes that matches the size of the valve core end of the faucet body.

4. The side top device for a faucet according to claim 1, characterized in that: The first limiting mechanism includes a first limiting base and a first limiting column detachably arranged on the first limiting base. When the first limiting mechanism is connected to the water outlet of the faucet, the first limiting column is inserted into the water outlet of the faucet. The first limiting column is one of a plurality of first limiting columns with different sizes that matches the size of the water outlet of the faucet.

5. The side top device for a faucet according to claim 4, characterized in that: The second limiting mechanism includes a second limiting base and a second limiting column detachably arranged on the second limiting base. When the second limiting mechanism is connected to the water outlet of the faucet, the second limiting column is connected to the water outlet of the faucet. The second limiting column is one of a plurality of second limiting columns with different sizes that matches the size of the water outlet of the faucet.

6. The side top device for a faucet according to claim 5, characterized in that: The second limiting base is a limiting plate, and the limiting plate is provided with a U-shaped limiting groove; when the faucet is in the third posture, one end of the second limiting column is threadedly connected to the water outlet of the faucet, and the other end is stuck in the limiting groove.

7. The side top device for a faucet according to claim 5 or 6, characterized in that: It also includes a first bottom plate, the clamping space is arranged above the first bottom plate, and the first bottom plate is provided with an opening extending through from top to bottom at a position corresponding to the clamping space; the second limiting mechanism is arranged such that when the faucet is in the third posture, the water outlet of the faucet extends downward through the opening, and the second limiting mechanism is connected to the water outlet of the faucet.

8. The side top device for a faucet according to claim 7, characterized in that: The first limiting mechanism is arranged on the first bottom plate, and the first bottom plate is respectively provided with a group of positioning holes on the left and right sides of the clamping space, each group of positioning holes includes multiple rows of positioning holes radially distributed relative to the center of a circle, and each row of positioning holes includes multiple positioning holes arranged along the radial direction of the circle; the first limiting base has a pair of feet, and the pair of feet are respectively provided with an arc hole; wherein, when the first limiting mechanism is detachably connected to the right or left side of the clamping space, the arc holes of the pair of feet are aligned with two positioning holes in one group of positioning holes and are connected by a pair of bolts.

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