Fertilizing device for landscaping

Abstract

The utility model relates to the technical field of fertilizing devices, and discloses a landscaping fertilizing device which comprises a vehicle body, four wheels are arranged on the vehicle body, a pushing handle is fixedly connected to the upper surface of the vehicle body, a connecting groove is formed in the upper surface of the vehicle body, the connecting groove extends out of the lower surface of the vehicle body, and two electric push rods are fixedly connected to the upper surface of the vehicle body. According to the fertilizing device for landscaping, the positioning rods slide into the corresponding positioning holes, then the fixed plates are loosened to fix the positioning rods, then the discharging grooves are replaced, due to the fact that the sizes of the discharging grooves are different, the discharging grooves are different in size, and therefore the discharging grooves can be conveniently replaced, and the practicability of the fertilizing device is improved. The quantity of the fertilizer flowing downwards into the soil holes through the discharging grooves can be synchronously adjusted by replacing the discharging grooves, so that the quantity of the fertilizer applied to landscaping is adjusted, and the practicability and the flexibility of the fertilizer applying device for landscaping are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fertilizer application devices, in particular to a fertilizer application device for landscaping. Background Art

[0002] As we all know, a fertilizing device for landscaping projects is a device used to fertilize flowers and plants during the landscaping process. It can increase the nutritional content of the soil and is widely used in the field of fertilizing devices.

[0003] Existing public patent: CN202220382859.3 A fertilizing device for municipal landscaping, which drives a spiral soil drill bit up and down through a support frame. When the motor is working, it drives the spiral soil drill bit to rotate, and at the same time drives the support frame to move up and down, and the support frame is assisted to move by the support column, and then the fertilizer is poured into the fertilizer bucket, and the sliding plate is driven to move by the hydraulic cylinder, and the fertilizer slides out through the fertilizer bucket. However, because there are many kinds of trees and plants that need to be fertilized in the garden, and different kinds of trees and plants require different amounts of fertilizer, in this comparative example, the trees can only be fertilized in a quantitative manner, and the amount of fertilizer cannot be adjusted, which makes the practicality and flexibility of landscaping weaker. Utility Model Content

[0004] (1) Technical problems solved

[0005] In response to the shortcomings of the existing technology, the utility model provides a fertilizing device for landscaping, which solves the problem that there are many types of trees and plants that need to be fertilized in the garden, and different types of trees and plants require different amounts of fertilizer. In this comparison, the trees can only be fertilized in a quantitative manner, and the amount of fertilizer cannot be adjusted, which makes the practicality and flexibility of landscaping weak.

[0006] (2) Technical solution

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: A fertilizing device for landscaping, comprising a vehicle body, wherein the vehicle body is provided with four wheels;

[0008] The upper surface of the vehicle body is fixedly connected to the push handle;

[0009] The upper surface of the vehicle body is provided with a connecting groove, which extends out of the lower surface of the vehicle body;

[0010] Among them, two electric push rods are fixedly connected to the upper surface of the vehicle body;

[0011] Among them, the upper ends of the two electric push rods are fixedly connected with fixed blocks;

[0012] Wherein, a drilling mechanism is provided on the fixed block, and the drilling mechanism includes a first motor, a rotating rod and a punching knife;

[0013] Among them, a fertilizer mechanism is provided on the vehicle body, which includes a fixing groove, a connecting pipe, a storage cone bucket, an installation groove, a positioning plate, a discharge trough, a positioning hole, a positioning rod, a support block, a fixing rod, a fixing plate, a first spring, a limit block, a sliding block, a sliding groove, a support plate, a second motor, a vertical block, a limiting block, a limit groove and a connecting hole.

[0014] Preferably, the first motor is fixedly connected to the upper surface of the fixed block, and the rotation output shaft of the first motor rotates through the lower surface of the fixed block;

[0015] Wherein, the rotating rod is fixedly connected to the rotating output shaft of the first motor;

[0016] Wherein, the punching knife is fixedly connected to the outer surface of the rotating rod.

[0017] Preferably, the fixing groove is provided on the right inner wall of the connecting groove;

[0018] Wherein, the connecting pipe is fixedly connected in the fixing groove, and the lower end of the connecting pipe extends into the connecting groove;

[0019] The storage cone hopper is fixedly connected to the upper end of the connecting pipe, and the storage cone hopper is communicated with the interior of the connecting pipe;

[0020] Among them, two installation grooves are opened on the left and right outer surfaces of the connecting pipe, and the installation grooves are connected to the inside of the connecting pipe;

[0021] Wherein, the positioning plate is slidably connected to the two mounting slots;

[0022] Among them, a plurality of discharge troughs are opened on the upper surface of the positioning plate, and the discharge troughs extend out of the lower surface of the positioning plate, and the diameters of the plurality of discharge troughs are different.

[0023] Preferably, a plurality of the positioning holes are provided on the front surface of the positioning plate;

[0024] The front and rear outer surfaces of the positioning plate are slidably connected to the front and rear inner walls of the connecting pipe;

[0025] Wherein, a motor base is fixedly connected to the upper surface of the vehicle body, and the second motor is fixedly connected to the motor base;

[0026] Wherein, the support plate is fixedly connected to the rotation output shaft of the second motor;

[0027] Wherein, the sliding block is fixedly connected to the rear surface of the support plate;

[0028] The sliding groove is provided on the front surface of the limiting block, and the sliding groove extends out of the rear surface of the limiting block.

[0029] Preferably, the limit block is slidably sleeved on the outer surface of the sliding block through a sliding groove;

[0030] Wherein, the support block is fixedly connected to the rear surface of the limit block;

[0031] The limiting groove is provided on the front surface of the support block, and the limiting groove extends out of the rear surface of the support block;

[0032] The fixing rod is slidably connected to the upper surface of the support block, and the lower end of the fixing rod slides through the limiting groove;

[0033] Wherein, the fixing plate is fixedly connected to the upper end of the fixing rod;

[0034] Wherein, the first spring is fixedly connected between the fixing plate and the supporting block, and the first spring is slidably sleeved on the outer surface of the fixing rod;

[0035] The positioning rod is slidably connected to the limiting groove, and the rear end of the positioning rod slides and extends into the positioning hole.

[0036] Preferably, the connection hole is formed on the outer surface of the positioning rod, and the connection hole is slidably connected to the lower end of the fixing rod;

[0037] Wherein, the vertical block is fixedly connected to the upper surface of the vehicle body;

[0038] The limiting block is fixedly connected to the left surface of the limiting block, and the vertical block is slidably sleeved on the outer surface of the limiting block.

[0039] (3) Beneficial effects

[0040] Compared with the prior art, the present invention provides a fertilizing device for landscaping, which has the following beneficial effects:

[0041] 1. The fertilizing device for landscaping can realize the replacement of the discharge trough. Because the sizes of the discharge troughs are different, the replacement of the discharge trough can synchronously adjust the amount of fertilizer flowing down into the soil holes through the discharge trough, and then adjust the amount of fertilizer applied to the landscaping, thereby increasing the practicality and flexibility of the fertilizing device for landscaping.

[0042] 2. The fertilizing device for landscaping uses an electric push rod to drive the punching knife to move up and down, thereby adjusting the depth of the holes punched by the punching knife in the soil. Punching is convenient and fast, and no manual drilling is required. The operation is convenient and flexible, thereby increasing the practicality of the fertilizing device.

[0043] 3. The fertilizing device for landscaping drives the positioning plate to move back and forth left and right. During this process, any discharge trough is driven to slide into the connecting pipe, and the fertilizer in the storage cone flows downward into the soil hole through the discharge trough, thereby realizing the fertilization of landscaping. Every time the second motor rotates one circle, it drives the fertilizer to flow downward into the soil hole through the discharge trough once, without manual fertilizer throwing, making landscaping fertilization more convenient and more efficient, thereby increasing the practicality of the fertilizing device for landscaping. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 This is a schematic diagram of the overall structure of a fertilizing device for landscaping in the utility model;

[0045] Figure 2 for Figure 1 A magnified view of point A;

[0046] Figure 3 This is a schematic diagram of the support block structure of the utility model;

[0047] Figure 4 This is a schematic diagram of the positioning plate structure of the utility model;

[0048] Figure 5 This is a schematic diagram of the connecting pipe structure of the utility model.

[0049] In the figure: 1. Vehicle body; 2. Wheel; 3. Push handle; 4. Connecting slot; 5. Electric push rod; 6. Rotating rod; 7. Punch knife; 8. First motor; 9. Fixed block; 10. Fixed slot; 11. Connecting pipe; 12. Storage cone bucket; 13. Mounting slot; 14. Positioning plate; 15. Discharge chute; 16. Positioning hole; 17. Positioning rod; 18. Support block; 19. Fixed rod; 20. Fixed plate; 21. First spring; 22. Limit block; 23. Sliding block; 24. Sliding slot; 25. Support plate; 26. Second motor; 27. Vertical block; 28. Limit block; 29. ​​Limit slot; 30. Connecting hole. DETAILED DESCRIPTION

[0050] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0051] See also Figure 1-5 , the utility model provides a new technical solution: a fertilizing device for landscaping, comprising a vehicle body 1, on which four wheels 2 are provided;

[0052] The upper surface of the vehicle body 1 is fixedly connected to the push handle 3;

[0053] The upper surface of the vehicle body 1 is provided with a connecting groove 4, which extends out of the lower surface of the vehicle body 1;

[0054] Among them, two electric push rods 5 are fixedly connected to the upper surface of the vehicle body 1;

[0055] Among them, the upper ends of the two electric push rods 5 are fixedly connected with a fixing block 9;

[0056] Among them, a drilling mechanism is provided on the fixed block 9, and the drilling mechanism includes a first motor 8, a rotating rod 6 and a punching knife 7;

[0057] Among them, a fertilizer mechanism is provided on the vehicle body 1, which includes a fixing groove 10, a connecting pipe 11, a storage cone hopper 12, a mounting groove 13, a positioning plate 14, a discharge trough 15, a positioning hole 16, a positioning rod 17, a support block 18, a fixing rod 19, a fixing plate 20, a first spring 21, a limit block 22, a sliding block 23, a sliding groove 24, a support plate 25, a second motor 26, a vertical block 27, a limiting block 28, a limit groove 29 and a connecting hole 30.

[0058] Furthermore, the first motor 8 is fixedly connected to the upper surface of the fixed block 9, and the rotation output shaft of the first motor 8 rotates through the lower surface of the fixed block 9;

[0059] Wherein, the rotating rod 6 is fixedly connected to the rotating output shaft of the first motor 8;

[0060] The punching knife 7 is fixedly connected to the outer surface of the rotating rod 6 .

[0061] Furthermore, the fixing groove 10 is provided on the right inner wall of the connecting groove 4;

[0062] The connecting pipe 11 is fixedly connected in the fixing groove 10, and the lower end of the connecting pipe 11 extends into the connecting groove 4;

[0063] The storage cone hopper 12 is fixedly connected to the upper end of the connecting pipe 11, and the storage cone hopper 12 is communicated with the interior of the connecting pipe 11;

[0064] Among them, two installation grooves 13 are opened on the left and right outer surfaces of the connecting pipe 11, and the installation grooves 13 are communicated with the interior of the connecting pipe 11;

[0065] Among them, the positioning plate 14 is slidably connected to the two mounting slots 13;

[0066] The plurality of discharge slots 15 are provided on the upper surface of the positioning plate 14 , and the discharge slots 15 extend out of the lower surface of the positioning plate 14 . The plurality of discharge slots 15 have different diameters.

[0067] Furthermore, a plurality of positioning holes 16 are provided on the front surface of the positioning plate 14;

[0068] The front and rear outer surfaces of the positioning plate 14 are slidably connected to the front and rear inner walls of the connecting pipe 11;

[0069] The upper surface of the vehicle body 1 is fixedly connected to a motor base, and the second motor 26 is fixedly connected to the motor base;

[0070] The support plate 25 is fixedly connected to the rotation output shaft of the second motor 26;

[0071] The sliding block 23 is fixedly connected to the rear surface of the support plate 25;

[0072] The sliding groove 24 is formed on the front surface of the limiting block 22 , and extends out of the rear surface of the limiting block 22 .

[0073] Furthermore, the limit block 22 is slidably mounted on the outer surface of the sliding block 23 through the sliding groove 24;

[0074] The support block 18 is fixedly connected to the rear surface of the limit block 22;

[0075] The limiting groove 29 is formed on the front surface of the support block 18 and extends out of the rear surface of the support block 18.

[0076] The fixing rod 19 is slidably connected to the upper surface of the support block 18, and the lower end of the fixing rod 19 slides through the limiting groove 29;

[0077] Wherein, the fixing plate 20 is fixedly connected to the upper end of the fixing rod 19;

[0078] The first spring 21 is fixedly connected between the fixing plate 20 and the support block 18 , and the first spring 21 is slidably sleeved on the outer surface of the fixing rod 19 ;

[0079] The positioning rod 17 is slidably connected to the limiting groove 29 , and the rear end of the positioning rod 17 slidably extends into the positioning hole 16 .

[0080] Furthermore, a connecting hole 30 is provided on the outer surface of the positioning rod 17 , and the connecting hole 30 is slidably connected to the lower end of the fixing rod 19 ;

[0081] Wherein, the vertical block 27 is fixedly connected to the upper surface of the vehicle body 1;

[0082] The limiting block 28 is fixedly connected to the left side surface of the limiting block 22 , and the vertical block 27 is slidably sleeved on the outer surface of the limiting block 28 .

[0083] Furthermore, when the first motor 8 and the electric push rod 5 are started, the first motor 8 starts to drive the rotating rod 6 and the punching knife 7 to rotate, and the punching knife 7 rotates to punch holes in the soil. The electric push rod 5 starts to drive the punching knife 7 to move up and down, thereby driving the adjustment of the punching depth of the soil by the punching knife 7. Punching is convenient and fast, and no manual drilling is required. The operation is convenient and flexible, thereby increasing the practicality of the fertilization device.

[0084] Furthermore, in the initial state, the discharge chute 15 is located outside the connecting pipe 11. When in use, the fertilizer is poured into the storage cone hopper 12, and the fertilizer flows into the connecting pipe 11 through the storage cone hopper 12 and is blocked by the positioning plate 14. When the second motor 26 is started, the second motor 26 starts to drive the support plate 25 and the sliding block 23 to rotate. During the rotation of the sliding block 23, it slides in the sliding groove 24, thereby synchronously driving the limit block 22 to move back and forth left and right. In this process, the positioning rod 17 is synchronously driven to move back and forth left and right, thereby synchronously driving the positioning plate 14 to move back and forth left and right. In this process, any discharge chute 15 is driven to slide into the connecting pipe 11, and the fertilizer in the storage cone hopper 12 flows downward into the soil hole through the discharge chute 15, thereby realizing the fertilization work of the garden greening. Every time the second motor 26 rotates one circle, it drives the fertilizer to flow downward into the soil hole through the discharge chute 15, without manual fertilizer throwing, making the fertilization of the garden greening more convenient and more efficient, thereby increasing the practicality of the fertilizing device for garden greening;

[0085] When the fixing plate 20 is pulled out, the fixing rod 19 can be driven to move upward, and in the process, the fixing rod 19 is driven to move upward and out of the connecting hole 30, and then the positioning rod 17 can be moved forward at this time, so that the positioning rod 17 slides out of the positioning hole 16, and then the positioning plate 14 is slid, and then the positioning rod 17 slides into the corresponding positioning hole 16, and then the pulling of the fixing plate 20 is released. Under the action of the released elastic force of the first spring 21, the fixing rod 19 is driven to slide into the connecting hole 30, thereby achieving the fixation of the positioning rod 17, and then achieving the replacement of the discharge trough 15. Because the sizes of the discharge troughs 15 are different, the replacement of the discharge trough 15 can synchronously adjust the amount of fertilizer flowing downward into the soil hole through the discharge trough 15, and then adjust the amount of fertilizer applied to the landscaping, thereby increasing the practicality and flexibility of the fertilizing device for landscaping.

[0086] Furthermore, this solution is suitable for fertilizing with granular fertilizers, while powdered and liquid fertilizers cannot be used.

[0087] Furthermore, in order to ensure a clear structural relationship, the positioning plate 14 is thicker in the drawing. However, in actual production and use, the positioning plate 14 is thinner.

[0088] Working principle: When the device is used, by starting the first motor 8 and the electric push rod 5, the first motor 8 starts to drive the rotating rod 6 and the punching knife 7 to rotate, and the punching knife 7 rotates to punch holes in the soil. The electric push rod 5 starts to drive the punching knife 7 to move up and down, thereby driving the adjustment of the punching depth of the soil by the punching knife 7. Punching is convenient and fast, without manual drilling, and the operation is convenient and flexible, thereby increasing the practicality of the fertilization device.

[0089] Furthermore, in the initial state, the discharge chute 15 is located outside the connecting pipe 11. When in use, the fertilizer is poured into the storage cone hopper 12, and the fertilizer flows into the connecting pipe 11 through the storage cone hopper 12 and is blocked by the positioning plate 14. When the second motor 26 is started, the second motor 26 starts to drive the support plate 25 and the sliding block 23 to rotate. During the rotation of the sliding block 23, it slides in the sliding groove 24, thereby synchronously driving the limit block 22 to move back and forth left and right. In this process, the positioning rod 17 is synchronously driven to move back and forth left and right, thereby synchronously driving the positioning plate 14 to move back and forth left and right. In this process, any discharge chute 15 is driven to slide into the connecting pipe 11, and the fertilizer in the storage cone hopper 12 flows downward into the soil hole through the discharge chute 15, thereby realizing the fertilization work of the garden greening. Every time the second motor 26 rotates one circle, it drives the fertilizer to flow downward into the soil hole through the discharge chute 15, without manual fertilizer throwing, making the fertilization of the garden greening more convenient and more efficient, thereby increasing the practicality of the fertilizing device for garden greening;

[0090] When the fixing plate 20 is pulled out, the fixing rod 19 can be driven to move upward, and in the process, the fixing rod 19 is driven to move upward and out of the connecting hole 30, and then the positioning rod 17 can be moved forward at this time, so that the positioning rod 17 slides out of the positioning hole 16, and then the positioning plate 14 is slid, and then the positioning rod 17 slides into the corresponding positioning hole 16, and then the pulling of the fixing plate 20 is released. Under the action of the released elastic force of the first spring 21, the fixing rod 19 is driven to slide into the connecting hole 30, thereby achieving the fixation of the positioning rod 17, and then achieving the replacement of the discharge trough 15. Because the sizes of the discharge troughs 15 are different, the replacement of the discharge trough 15 can synchronously adjust the amount of fertilizer flowing downward into the soil hole through the discharge trough 15, and then adjust the amount of fertilizer applied to the landscaping, thereby increasing the practicality and flexibility of the fertilizing device for landscaping.

[0091] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

[0092] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0093] In the description of this utility model, terms such as "greater than," "less than," and "exceed" are understood to exclude the number indicated, while terms such as "above," "below," and "within" are understood to include the number indicated. The terms "first" and "second" are used solely to distinguish technical features and are not to be construed as indicating or implying relative importance, or as implicitly specifying the number or order of the technical features indicated.

[0094] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

Claims

1. A fertilizing device for landscaping, comprising a vehicle body (1), characterized in that: The vehicle body (1) is provided with four wheels (2); The upper surface of the vehicle body (1) is fixedly connected to the push handle (3); Wherein, a connection groove (4) is provided on the upper surface of the vehicle body (1), and the connection groove (4) extends out of the lower surface of the vehicle body (1); Wherein, two electric push rods (5) are fixedly connected to the upper surface of the vehicle body (1); The upper ends of the two electric push rods (5) are fixedly connected with a fixing block (9); Wherein, a drilling mechanism is provided on the fixed block (9), and the drilling mechanism comprises a first motor (8), a rotating rod (6) and a punching knife (7); The vehicle body (1) is provided with a fertilizing mechanism, which includes a fixing groove (10), a connecting pipe (11), a storage cone (12), a mounting groove (13), a positioning plate (14), a discharging groove (15), a positioning hole (16), a positioning rod (17), a support block (18), a fixing rod (19), a fixing plate (20), a first spring (21), a limiting block (22), a sliding block (23), a sliding groove (24), a support plate (25), a second motor (26), a vertical block (27), a limiting block (28), a limiting groove (29) and a connecting hole (30).

2. A landscaping fertilizer application device according to claim 1, characterized in that: The first motor (8) is fixedly connected to the upper surface of the fixed block (9), and the rotation output shaft of the first motor (8) rotates and passes through the lower surface of the fixed block (9); Wherein, the rotating rod (6) is fixedly connected to the rotating output shaft of the first motor (8); The punching knife (7) is fixedly connected to the outer surface of the rotating rod (6).

3. A landscaping fertilizer application device according to claim 2, characterized in that: The fixing groove (10) is provided on the right inner wall of the connecting groove (4); Wherein, the connecting pipe (11) is fixedly connected in the fixing groove (10), and the lower end of the connecting pipe (11) extends into the connecting groove (4); The storage cone hopper (12) is fixedly connected to the upper end of the connecting pipe (11), and the storage cone hopper (12) is in communication with the interior of the connecting pipe (11); Two mounting grooves (13) are provided on the left and right outer surfaces of the connecting pipe (11), and the mounting grooves (13) are communicated with the interior of the connecting pipe (11); Wherein, the positioning plate (14) is slidably connected to the two mounting grooves (13); The plurality of discharge troughs (15) are provided on the upper surface of the positioning plate (14), the discharge troughs (15) extend out of the lower surface of the positioning plate (14), and the plurality of discharge troughs (15) have different diameters.

4. A landscaping fertilizer application device according to claim 3, characterized in that: A plurality of positioning holes (16) are provided on the front surface of the positioning plate (14); The front and rear outer surfaces of the positioning plate (14) are slidably connected to the front and rear inner walls of the connecting tube (11); Wherein, a motor base is fixedly connected to the upper surface of the vehicle body (1), and the second motor (26) is fixedly connected to the motor base; Wherein, the support plate (25) is fixedly connected to the rotation output shaft of the second motor (26); Wherein, the sliding block (23) is fixedly connected to the rear surface of the support plate (25); The sliding groove (24) is provided on the front surface of the limiting block (22), and the sliding groove (24) extends out of the rear surface of the limiting block (22).

5. A landscaping fertilizer application device according to claim 4, characterized in that: The limit block (22) is slidably sleeved on the outer surface of the sliding block (23) through the sliding groove (24); Wherein, the support block (18) is fixedly connected to the rear surface of the limit block (22); The limiting groove (29) is provided on the front surface of the support block (18), and the limiting groove (29) extends out of the rear surface of the support block (18); The fixing rod (19) is slidably connected to the upper surface of the support block (18), and the lower end of the fixing rod (19) slides through the limiting groove (29); Wherein, the fixing plate (20) is fixedly connected to the upper end of the fixing rod (19); Wherein, the first spring (21) is fixedly connected between the fixed plate (20) and the support block (18), and the first spring (21) is slidably sleeved on the outer surface of the fixed rod (19); The positioning rod (17) is slidably connected to the limiting groove (29), and the rear end of the positioning rod (17) slides and extends into the positioning hole (16).

6. A landscaping fertilizer application device according to claim 5, characterized in that: The connecting hole (30) is formed on the outer surface of the positioning rod (17), and the connecting hole (30) is slidably connected to the lower end of the fixing rod (19); Wherein, the vertical block (27) is fixedly connected to the upper surface of the vehicle body (1); The limiting block (28) is fixedly connected to the left surface of the limiting block (22), and the vertical block (27) is slidably sleeved on the outer surface of the limiting block (28).

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