Steel ball press-in device

Abstract

The utility model provides a steel ball press-in device which comprises a base, a press-in seat, a sliding connection seat, a steel ball supply pipe, an elastic limiting piece, a first air cylinder and a ball pressing rod, the press-in seat is arranged on one side of the base, and a plurality of supply through holes allowing steel balls to penetrate through are formed in the press-in seat; and the sliding seat is arranged between the pressing seat and the base in a sliding manner. A plurality of steel balls are stored in supply through holes under the action of elastic limiting pieces, when the steel balls need to be pressed in, only a first air cylinder needs to be started, a plurality of ball pressing rods can move downwards at the same time, and the steel balls stored on the inner sides of the supply through holes can overcome the elastic limiting action of the elastic limiting pieces; and the steel balls are synchronously pressed out and pressed into the steel ball limiting holes, so that synchronous pressing-in treatment of the multiple steel balls is completed, only one steel ball can be stored each time through the arrangement of the supply through holes, the steel balls can stably fall into and be stored in the supply through holes, and use is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of steel ball press-fitting, in particular to a steel ball press-fitting device. Background Art

[0002] In the prior art, especially vehicle seats all have the demand to be movable, and in order to meet this demand, steel balls are generally embedded in the bottom limit grooves of the seats, and the seats are driven to move by the steel balls rolling in the limit grooves, and the steel balls are usually pressed into the steel ball limit grooves at the bottom of the seat by manual pressing.

[0003] The invention with publication number CN109732314B proposes a steel ball pressing device and a steel ball detection method, including two relatively arranged abutment blocks and a pressing block, a transmission channel for the passage of workpieces is formed between the abutment block and the pressing block, a horizontal through-extrusion channel and a vertical through-feeding channel are provided on the pressing block, the extrusion channel is connected to the feeding channel, and a feeding pipe located above the extrusion channel and a material placement device located below the extrusion channel are provided in the feeding channel. The above-mentioned steel ball pressing device is not convenient for pressing multiple steel balls at the same time, resulting in that when pressing multiple steel balls into multiple steel ball limiting holes on the steel ball pressing part, it is necessary to press multiple steel balls into the inner side of each steel ball limiting hole one by one, which takes a long time, so a steel ball pressing device is proposed to solve the above problem. Utility Model Content

[0004] In view of this, the utility model proposes a steel ball pressing device, which stores multiple steel balls inside each supply through hole under the action of an elastic limiting member. When the steel balls need to be pressed, it is only necessary to start the first cylinder to move the multiple ball pressing rods downward at the same time, and the steel balls stored inside each supply through hole can overcome the elastic limiting effect of the elastic limiting member, and be synchronously pressed out and pressed into the steel ball limiting hole, thereby completing the synchronous pressing of multiple steel balls. By setting the supply through hole to store only one steel ball at a time, the steel balls can stably fall into and be stored inside the supply through hole, which is convenient to use.

[0005] The technical solution of the utility model is implemented as follows: The utility model provides a steel ball pressing device, including a base, a pressing seat, a sliding seat, a steel ball feeding tube, an elastic limiter, a first cylinder and a ball pressing rod, wherein:

[0006] A press-in seat is arranged on one side of the base, and the press-in seat is provided with a plurality of supply through holes for steel balls to pass through;

[0007] A sliding seat, slidably disposed between the press-in seat and the base, and sliding in a direction close to or away from the press-in seat;

[0008] A plurality of steel ball supply tubes are arranged on the press-in seat and are respectively connected to each of the supply through holes, and are used to supply steel balls to the supply through holes;

[0009] A plurality of elastic limiting members are respectively arranged on the inner side of each of the supply through holes to limit the rolling of the steel balls;

[0010] A first cylinder is disposed on the base, and a telescopic end of the first cylinder is fixedly connected to the sliding seat;

[0011] A plurality of bead pressing rods are all arranged on the sliding seat and are respectively inserted into the inner side of each of the supply through holes.

[0012] On the basis of the above technical solution, preferably, it further includes a first connecting shaft, a limiting ring and a first spring, wherein:

[0013] A first connecting shaft is arranged on the press-in seat, and an end of the first connecting shaft passes through and extends to a side of the sliding seat away from the press-in seat;

[0014] A limiting ring, arranged at the end of the first connecting shaft;

[0015] The first spring is sleeved on the peripheral side of the first connecting shaft, and two ends of the first spring respectively abut against the press-in seat and the sliding seat.

[0016] On the basis of the above technical solution, preferably, the press-in seat comprises a bottom plate and a supply member, wherein:

[0017] The bottom plate is located at a side of the supply member away from the sliding seat and is fixedly connected to the supply member. The steel ball supply pipe is arranged on the supply member, and the first connecting shaft is fixedly connected to the bottom plate.

[0018] On the basis of the above technical solution, preferably, the elastic limiter comprises an assembly tube, a second spring and a spherical clamp, wherein:

[0019] An assembly cylinder is fixedly arranged relative to the supply member, and the second spring is arranged inside the assembly cylinder;

[0020] A spherical chuck is fixedly connected to the second spring, and an end of the spherical chuck extends to the inner side of the supply through hole.

[0021] On the basis of the above technical solution, preferably, a first assembly hole communicating with the supply through hole is opened on the supply member, and the assembly cylinder is inserted into the inner side of the first assembly hole and fixedly connected with the supply member.

[0022] On the basis of the above technical solution, preferably, the supply member is further provided with a second assembly hole connected to the first assembly hole, and a clamping bolt is threadedly connected to the inner side of the second assembly hole.

[0023] On the basis of the above technical solution, preferably, it further includes a bearing and a second connecting rod, wherein:

[0024] A bearing, disposed on the base;

[0025] The second connecting rod is arranged on the sliding seat, passes through the base and is movably connected with the bearing.

[0026] On the basis of the above technical solution, preferably, it also includes a top seat, a steel ball storage cylinder and a drop tube, wherein:

[0027] A top seat, arranged on the base;

[0028] A steel ball storage cylinder is arranged on a side of the top seat away from the base seat for storing steel balls. A mutually connected bead dropping through hole is provided between the steel ball storage cylinder and the top seat, and the drop pipe is connected to the bead dropping through hole.

[0029] On the basis of the above technical solution, preferably, it further includes a second cylinder, a mounting plate and a supply pipe, wherein:

[0030] The top seat comprises an assembly top plate and an assembly bottom plate respectively located at two ends of the top seat, and the steel ball storage cylinder is arranged on the assembly top plate;

[0031] A second cylinder is arranged on the assembly base plate;

[0032] A mounting plate fixedly connected to the telescopic end of the second cylinder, and the drop tube is arranged on the mounting plate;

[0033] The supply pipe is arranged on a side of the mounting plate away from the drop pipe and is communicated with the drop pipe.

[0034] On the basis of the above technical solution, preferably, it also includes a slide rail and a support seat, wherein:

[0035] The support seat is arranged on the slide rail and is used to support the slide rail, and the base is slidably connected to the slide rail.

[0036] The steel ball pressing device of the utility model has the following beneficial effects compared with the prior art:

[0037] (1) By storing multiple steel balls in the interior of each supply through hole under the action of an elastic limiting member, when it is necessary to press the steel balls in, it is only necessary to start the first air cylinder to move the multiple ball pressing rods downward at the same time, and the steel balls stored in the inner side of each supply through hole can overcome the elastic limiting action of the elastic limiting member, and be simultaneously pressed out and pressed into the interior of the steel ball limiting hole, thereby completing the synchronous pressing of multiple steel balls. By setting the supply through hole to store only one steel ball at a time, the steel ball can stably fall into and be stored in the interior of the supply through hole, which is convenient for use.

[0038] (2) By setting up a steel ball storage cylinder, in a specific implementation, the steel balls used for processing can be stored inside the steel ball storage cylinder. At this time, the steel balls inside the steel ball storage cylinder can roll down to the inside of the drop tube through the ball drop hole. The drop tube is connected to the steel ball supply tube through an external connecting tube. At this time, the steel balls that fall to the drop tube can fall into the steel ball supply tube through the external connecting tube and be stored in the steel ball supply tube, so as to continuously supply steel balls to the supply hole, so that the steel balls can be continuously and automatically supplied to the inner side of the supply hole, which is convenient for the automatic pressing process of multiple steel balls. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0040] Figure 1 It is a three-dimensional diagram of the steel ball pressing device of the utility model;

[0041] Figure 2 It is a three-dimensional schematic diagram of the structure of the base of the steel ball pressing device of the utility model;

[0042] Figure 3 The utility model is a steel ball pressing device Figure 2 a bottom perspective view of the structure shown;

[0043] Figure 4 It is a three-dimensional schematic diagram of the top seat structure of the steel ball pressing device of the utility model;

[0044] Figure 5 The utility model is a steel ball pressing device Figure 4 a top perspective view of the structure shown;

[0045] Figure 6 The utility model is a steel ball pressing device Figure 4 a left side view of the structure shown;

[0046] Figure 7 The utility model is a steel ball pressing device Figure 6 A cross-sectional view of the structure at AA is shown;

[0047] Figure 8 It is a three-dimensional schematic diagram of the structure of the supply part of the steel ball pressing device of the utility model;

[0048] Fig. 9 The utility model is a steel ball pressing device Figure 8 a top perspective view of the structure shown;

[0049] Fig.10 The utility model is a steel ball pressing device Figure 8 a left side view of the structure shown;

[0050] Fig.11 The utility model is a steel ball pressing device Fig.10 A cross-sectional view of the structure at BB is shown. DETAILED DESCRIPTION

[0051] The following will be combined with the implementation of the utility model to clearly and completely describe the technical solutions in the implementation of the utility model. Obviously, the described implementation is only a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0052] like Figures 1 to 11 As shown, the steel ball pressing device of the utility model is characterized in that it includes a base 1, a pressing seat 2, a sliding seat 3, a steel ball supply tube 41, an elastic limiter 42, a first cylinder 43 and a ball pressing rod 44, wherein the pressing seat 2 is arranged on one side of the base 1, and a plurality of supply through holes 23 are opened on the pressing seat 2, and the supply through hole 23 is used for a steel ball to pass through; the sliding seat 3 is slidably arranged between the pressing seat 2 and the base 1, and slides in a direction close to or away from the pressing seat 2; a plurality of steel ball supply tubes 41 are all arranged on the pressing seat 2, and are respectively connected to each supply through hole 23, and are used to supply steel balls to the supply through holes 23; a plurality of elastic limiters 42 are respectively arranged on the inner side of each supply through hole 23, and are used to limit the rolling of the steel balls; the first cylinder 43 is arranged on the base 1, and the telescopic end of the first cylinder 43 is fixedly connected to the sliding seat 3; a plurality of ball pressing rods 44 are all arranged on the sliding seat 3, and are respectively inserted into the inner side of each supply through hole 23.

[0053] In a specific implementation, the inner side of the supply through hole 23 can only supply and store one steel ball at a time.

[0054] In the specific implementation, the external steel ball connecting pipeline is connected to the steel ball supply pipe 41. At this time, the steel ball rolls to the inner side of the supply through hole 23 and is stored inside the supply through hole 23 under the limit of the elastic limit piece 42. When the external steel ball assembly moves to the bottom of the pressing seat 2, the first cylinder 43 is started. At this time, the first cylinder 43 presses down the sliding seat 3, and the sliding seat 3 drives multiple ball pressing rods 44 to move downward at the same time, and presses down the steel balls on the inner side of each supply through hole 23, so that the steel balls overcome the limit effect of the elastic limit piece 42, move out of the supply through hole 23 and are pressed into the interior of the steel ball assembly, thereby completing the automatic pressing process of the steel balls. The steel ball pressing process is performed by moving the steel ball assembly to the bottom of the pressing seat 2. At this time, the multiple supply through holes 23 on the pressing seat 2 are automatically aligned with the multiple steel ball limiting holes on the steel ball assembly. When the steel balls need to be pressed, it is only necessary to start the first cylinder 43 to move the multiple ball pressing rods 44 downward at the same time, so that the steel balls stored inside the supply through holes 23 are synchronously pressed out and pressed into the inside of the steel ball limiting holes, thereby completing the synchronous pressing process of multiple steel balls. By setting the supply through hole 23 to store only one steel ball at a time, the steel balls can stably fall into and be stored inside the supply through hole 23, which is convenient for use.

[0055] As a preferred embodiment, it also includes a first connecting shaft 51, a limiting ring 52 and a first spring 53, wherein the first connecting shaft 51 is arranged on the press-in seat 2, and the end of the first connecting shaft 51 passes through and extends to the side of the sliding seat 3 away from the press-in seat 2; the limiting ring 52 is arranged at the end of the first connecting shaft 51; the first spring 53 is sleeved on the circumferential side of the first connecting shaft 51, and the two ends of the first spring 53 respectively resist the press-in seat 2 and the sliding seat 3.

[0056] With this design, when the sliding seat 3 is pushed to move by the first cylinder 43, the pressing seat 2 can be driven to move synchronously. When the pressing seat 2 is pressed against the steel ball assembly, the sliding seat 3 continues to move and squeezes the first spring 53, so that the ball pressing rod 44 continues to move and pushes the steel ball out of the supply through hole 23, completing the pressing of the steel ball. By setting the pressing seat 2 to be pressed against the steel ball assembly during the pressing process, the steel ball can be perfectly embedded in the steel ball limit hole when it is separated from the supply through hole 23, thereby increasing the stability of the automatic pressing of the steel ball.

[0057] As a preferred embodiment, the press-in seat 2 includes a base plate 21 and a supply member 22, wherein the base plate 21 is located on a side of the supply member 22 away from the sliding seat 3 and is fixedly connected to the supply member 22, the steel ball supply tube 41 is arranged on the supply member 22, and the first connecting shaft 51 is fixedly connected to the base plate 21.

[0058] The elastic limit member 42 includes an assembly cylinder 421, a second spring 422 and a spherical clamp 423, wherein the assembly cylinder 421 is fixedly arranged relative to the supply member 22, and the second spring 422 is arranged on the inner side of the assembly cylinder 421; the spherical clamp 423 is fixedly connected to the second spring 422, and the end of the spherical clamp 423 extends to the inner side of the supply through hole 23.

[0059] In a specific implementation, the steel ball is stored inside the supply part 22 under the limitation of the spherical clamp 423. When the steel ball is pressed downward by the ball pressing rod 44, the steel ball exerts force on the spherical clamp 423, causing the spherical clamp 423 to slide along the assembly tube 421 and squeeze the second spring 422, thereby causing the spherical clamp 423 to detach from the bottom of the steel ball, so that the steel ball can be squeezed out smoothly.

[0060] As a preferred embodiment, a first assembly hole 221 communicating with the supply through hole 23 is formed on the supply member 22 , and the assembly tube 421 is inserted into the inner side of the first assembly hole 221 and fixedly connected to the supply member 22 .

[0061] The supply member 22 is further provided with a second assembly hole 222 communicating with the first assembly hole 221 , and a clamping bolt 45 is threadedly connected to the inner side of the second assembly hole 222 .

[0062] Specifically, when assembling the assembly cylinder 421, the assembly cylinder 421 is inserted into the inside of the first assembly hole 221, and then the clamping bolt 45 is threadedly connected to the inner side of the second assembly hole 222, and the clamping bolt 45 is rotated so that the clamping bolt 45 clamps the assembly cylinder 421 from one side of the assembly cylinder 421, thereby completing the clamping and positioning processing of the assembly cylinder 421.

[0063] As a preferred embodiment, it further includes a bearing 61 and a second connecting rod 62 , wherein the bearing 61 is arranged on the base 1 ; the second connecting rod 62 is arranged on the sliding seat 3 , passes through the base 1 and is movably connected to the bearing 61 .

[0064] With such a design, the sliding connection of the sliding seat 3 is achieved by sliding the second connecting rod 62 along the bearing 61 .

[0065] As a preferred embodiment, it also includes a top seat 71, a steel ball storage cylinder 72 and a drop tube 74, wherein the top seat 71 is arranged on the base 1; the steel ball storage cylinder 72 is arranged on the side of the top seat 71 away from the base 1, and is used to store steel balls, and a ball dropping through hole 73 that is interconnected is opened between the steel ball storage cylinder 72 and the top seat 71, and the drop tube 74 is connected to the ball dropping through hole 73.

[0066] With this design, the steel balls used for processing can be stored inside the steel ball storage cylinder 72. At this time, the steel balls inside the steel ball storage cylinder 72 can roll down to the inside of the drop tube 74 through the ball drop hole 73. The drop tube 74 is connected to the steel ball supply tube 41 through an external connecting tube. At this time, the steel balls that fall into the drop tube 74 can fall into and be stored in the steel ball supply tube 41 through the external connecting tube, so as to continuously supply steel balls to the supply hole 23, so that the steel balls can be continuously and automatically supplied to the inner side of the supply hole 23, so as to facilitate the automatic pressing process of multiple steel balls.

[0067] As a preferred embodiment, it also includes a second cylinder 75, a mounting plate 76 and a supply pipe 77, wherein the top seat 71 includes an assembly top plate 711 and an assembly bottom plate 712 respectively located at both ends of the top seat 71, and the steel ball storage tube 72 is arranged on the assembly top plate 711; the second cylinder 75 is arranged on the assembly bottom plate 712; the mounting plate 76 is fixedly connected to the telescopic end of the second cylinder 75, and the drop pipe 74 is arranged on the mounting plate 76; the supply pipe 77 is arranged on the side of the mounting plate 76 away from the drop pipe 74, and is connected to the drop pipe 74.

[0068] In a specific implementation, the drop tube 74 has a movable space on the inner side of the bead dropping through hole 73, and the steel balls dropped from the drop tube 74 can fall into the inner side of the supply tube 77 through the mounting plate 76, and the telescopic end of the second cylinder 75 is adjusted to extend or retract. At this time, the second cylinder 75 drives the mounting plate 76 to move up and down, and the mounting plate 76 drives the supply tube 77 and the drop tube 74 to move up and down synchronously, thereby completing the adjustment of the position of the discharge port of the supply tube 77, so that the supply tube 77 can adapt to the length of the external connecting tube for connection, which is convenient for use.

[0069] As a preferred embodiment, it further includes a slide rail 81 and a support seat 82 , wherein the support seat 82 is disposed on the slide rail 81 for supporting the slide rail 81 , and the base 1 is slidably connected to the slide rail 81 .

[0070] In a specific implementation, the base 1 can be adjusted to slide along the slide rail 81 so that the base 1 slides on the conveying line of the steel ball assembly seat, thereby facilitating the adjustment of the position of the base 1 to adapt to the conveying position of the steel ball assembly seat for automatic pressing of the steel balls.

[0071] The working principle of the utility model is introduced as follows:

[0072] The external steel ball connecting pipeline is connected to the steel ball supply pipe 41 and the supply pipe 77. At this time, the steel balls stored in the steel ball storage tube 72 can roll to the inner side of the supply through hole 23 through the supply pipe 77 and the steel ball supply pipe 41, and are stored in the supply through hole 23 under the limit of the spherical clamp 423. When the external steel ball assembly moves to the bottom of the pressing seat 2, the first cylinder 43 is started. At this time, the first cylinder 43 presses down the sliding seat 3 and drives the pressing seat 2 to move downward synchronously. When the pressing seat 2 presses the steel ball assembly, the supply through hole 23 is relative to each steel ball limiting hole, and the sliding seat 3 continues to move and drives multiple ball pressing rods 44 to move downward at the same time. The ball pressing rod 44 presses down the steel ball, so that the steel ball overcomes the elastic action of the second spring 422 to push open the spherical clamp 423, moves out of the supply through hole 23 and is pressed into the interior of the steel ball assembly, thereby completing the automatic pressing process of the steel ball.

[0073] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A steel ball pressing device, characterized in that: It comprises a base (1), a press-in seat (2), a sliding seat (3), a steel ball supply pipe (41), an elastic stopper (42), a first cylinder (43) and a ball pressing rod (44), wherein: A press-in seat (2) is arranged on one side of the base (1), and a plurality of supply through holes (23) are provided on the press-in seat (2), wherein the supply through hole (23) is used for a steel ball to pass through; A sliding seat (3) is slidably arranged between the press-in seat (2) and the base (1) and slides in a direction approaching or moving away from the press-in seat (2); A plurality of steel ball supply tubes (41), each of which is disposed on the press-in seat (2) and is respectively connected to each of the supply through holes (23) and is used to supply steel balls to the supply through holes (23); A plurality of elastic limiting members (42), respectively arranged on the inner side of each of the supply through holes (23), for limiting the rolling of the steel balls; A first cylinder (43) is arranged on the base (1), and a telescopic end of the first cylinder (43) is fixedly connected to the sliding seat (3); A plurality of bead pressing rods (44) are all arranged on the sliding seat (3) and are respectively inserted into the inner side of each of the supply through holes (23).

2. The steel ball pressing device according to claim 1, characterized in that: It also includes a first connecting shaft (51), a limiting ring (52) and a first spring (53), wherein: A first connecting shaft (51) is arranged on the press-in seat (2), and an end portion of the first connecting shaft (51) passes through and extends to a side of the sliding seat (3) away from the press-in seat (2); A limiting ring (52) is arranged at the end of the first connecting shaft (51); The first spring (53) is sleeved on the circumferential side of the first connecting shaft (51), and the two ends of the first spring (53) respectively contact the press-in seat (2) and the sliding seat (3).

3. The steel ball pressing device according to claim 2, characterized in that: The press-in seat (2) comprises a base plate (21) and a supply member (22), wherein: The bottom plate (21) is located on a side of the supply member (22) away from the sliding seat (3) and is fixedly connected to the supply member (22). The steel ball supply tube (41) is arranged on the supply member (22), and the first connecting shaft (51) is fixedly connected to the bottom plate (21).

4. The steel ball pressing device according to claim 3, characterized in that: The elastic limiting member (42) comprises a mounting tube (421), a second spring (422) and a spherical clamp (423), wherein: An assembly cylinder (421) is fixedly arranged relative to the supply member (22), and the second spring (422) is arranged on the inner side of the assembly cylinder (421); A spherical clamp (423) is fixedly connected to the second spring (422), and an end of the spherical clamp (423) extends to the inner side of the supply through hole (23).

5. The steel ball pressing device according to claim 4, characterized in that: The supply member (22) is provided with a first assembly hole (221) which is in communication with the supply through hole (23), and the assembly cylinder (421) is inserted into the inner side of the first assembly hole (221) and fixedly connected to the supply member (22).

6. The steel ball pressing device according to claim 5, characterized in that: The supply member (22) is also provided with a second assembly hole (222) which is in communication with the first assembly hole (221), and a clamping bolt (45) is threadedly connected to the inner side of the second assembly hole (222).

7. The steel ball pressing device according to claim 1, characterized in that: It also includes a bearing (61) and a second connecting rod (62), wherein: A bearing (61) is arranged on the base (1); The second connecting rod (62) is arranged on the sliding seat (3), passes through the base (1) and is movably connected to the bearing (61).

8. The steel ball pressing device according to claim 1, characterized in that: It also includes a top seat (71), a steel ball storage cylinder (72) and a drop tube (74), wherein: A top seat (71) is arranged on the base (1); A steel ball storage cylinder (72) is arranged on a side of the top seat (71) away from the base (1) and is used to store steel balls. A mutually communicating bead dropping through hole (73) is provided between the steel ball storage cylinder (72) and the top seat (71), and the drop pipe (74) is connected to the bead dropping through hole (73).

9. The steel ball pressing device according to claim 8, characterized in that: It also includes a second cylinder (75), a mounting plate (76) and a supply pipe (77), wherein: The top seat (71) comprises an assembly top plate (711) and an assembly bottom plate (712) respectively located at two ends of the top seat (71), and the steel ball storage cylinder (72) is arranged on the assembly top plate (711); A second cylinder (75) is arranged on the assembly base plate (712); A mounting plate (76) fixedly connected to the telescopic end of the second cylinder (75), and the drop tube (74) is arranged on the mounting plate (76); The supply pipe (77) is arranged on a side of the mounting plate (76) away from the drop pipe (74) and is connected to the drop pipe (74).

10. The steel ball pressing device according to claim 1, characterized in that: It also includes a slide rail (81) and a support seat (82), wherein: The support seat (82) is arranged on the slide rail (81) and is used to support the slide rail (81), and the base (1) is slidably connected to the slide rail (81).

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