Landscaping water-saving device

By designing hydraulic -driven activity devices and card tight mechanisms in the garden greening water -saving device, the problem of inconvenient adjustment and maintenance of atomizer angle adjustment and maintenance is solved; Balanced and efficient.

CN222396484UActive Publication Date: 2025-01-28TIANJIN XIANGTIAN CONSTRUCTION ENGINEERING CO LTD
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Patent Information

Application Number
CN202420782118.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-04-16
Publication Date
2025-01-28
Estimated Expiration
2034-04-16

AI Technical Summary

Technical Problem

The fixed angle design of the existing landscaping water-saving device cannot adapt to the needs of different plants and terrain, resulting in uneven irrigation; at the same time, the device is cumbersome during maintenance and disassembly, and the unreasonable design of the conveying pipeline leads to insufficient water flow speed. All, affecting the irrigation effect.

Method used

A garden greening water -saving device is designed to use a hydraulic -driven activity device to achieve flexible adjustment of the angle of the atomizer, and simplify the installation and disassembly of the atomizer through the card tight mechanism; The speed of water flow.

Benefits of technology

Realize the flexible adjustment of the angle of the atomizer, meet the needs of different plants and terrain, and avoid the problem of uneven irrigation; simplify the maintenance and disassembly of the atomizer and improve the efficiency of work; Uniformity and effectiveness.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a landscaping water-saving device which comprises an atomizer, a movable device is arranged on one side of the atomizer and comprises first hydraulic cylinders, first hydraulic rods and a movable frame, the first hydraulic cylinders are connected with the atomizer, the first hydraulic rods are connected with the movable frame, and two groups of first hydraulic cylinders and two groups of first hydraulic rods are symmetrically arranged. A connecting pipe is arranged at one end of the atomizer, one end of the connecting pipe is connected with an adjusting device, the adjusting device comprises a conveying pipe, an elastic piece, an ejector rod, a large gear, a small gear, a motor, a rotating sleeve, a corrugated pipe and an adjusting pipe, the corrugated pipe is arranged on one side of the adjusting pipe, the rotating sleeve is connected with the adjusting pipe, the large gear sleeves the rotating sleeve, and the motor is installed on one side of the conveying pipe. The small gear is installed at the output end of the motor, the small gear is meshed with the large gear, the elastic piece is installed in the conveying pipe, the ejector rod is installed in the adjusting pipe, and the clamping mechanism is installed on the movable frame. The differential irrigation requirements of different plants and terrains are met, and the water-saving requirement is met.
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Description

Technical Field

[0001] The utility model relates to the technical field of gardening and greening, and more specifically, to a gardening and greening water-saving device. Background Art

[0002] Atomizer is an important component in the existing landscaping water-saving devices. The atomization irrigation method of the atomizer can not only reduce the water consumption, but also improve the utilization rate of water, while avoiding the soil erosion and nutrient loss caused by a large amount of water directly flushing the ground. However, most atomizers adopt a fixed-angle installation method. Although such a design is simple and convenient, it cannot adapt to the needs of different plants and terrains. For plants of different heights and different growth habits, the required water mist angle and spraying direction are different. Fixed-angle atomizers are difficult to meet such differentiated needs, resulting in insufficient irrigation of plants in some areas, while other areas may have problems of over-irrigation, resulting in waste of water resources and uneven plant growth.

[0003] Secondly, during the use of landscaping water-saving devices, the atomizer needs to be regularly maintained and replaced to ensure its stable and reliable performance. However, the existing water-saving devices have many inconveniences in the installation and disassembly of the atomizer. Many devices use connection methods such as bolts or snaps, and require special tools for assembly and disassembly. The operation is cumbersome and time-consuming and labor-intensive. Especially in some tall plants or inaccessible areas, the disassembly and assembly of the atomizer is more difficult and dangerous, which not only increases the workload and labor intensity of maintenance personnel, but also prolongs the downtime of the equipment, affecting the continuity and efficiency of irrigation.

[0004] In addition, the delivery pipeline of the landscaping water-saving device is an important channel connecting the water source and the atomizer. The design of its internal structure directly affects the effect and efficiency of irrigation. However, most of the existing delivery pipelines adopt a simple smooth inner wall design. In actual use, due to the influence of factors such as terrain and water pressure, the water flow rate in different areas may vary greatly. The water flow rate in some areas is too fast, which will not only aggravate the wear and corrosion of the pipeline, but also may cause problems such as unstable water pressure and poor atomization effect; while the water flow rate in other areas is too slow, which will affect the efficiency and coverage of irrigation. This imbalance in water flow rate not only affects the overall performance of the water-saving device, but also fails to meet the irrigation needs of plants in different areas. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the problems existing in the prior art, the utility model provides a garden greening water-saving device to solve the technical problems mentioned in the background technology.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a garden greening water-saving device, including an atomizer, a movable device is arranged on one side of the atomizer, the movable device includes a first hydraulic cylinder, a first hydraulic rod and a movable frame, the atomizer can be movably mounted on one side of the movable frame, the first hydraulic cylinder and the atomizer are movably connected, the first hydraulic rod is mounted on the output end of the first hydraulic cylinder, the other end of the first hydraulic rod is movably connected to the movable frame, and the first hydraulic cylinder and the first hydraulic rod are symmetrically arranged in two groups, one end of the atomizer is provided with a connecting pipe, one end of the connecting pipe is connected to an adjusting device, the adjusting device includes a conveying pipe, an elastic sheet, A push rod, a large gear, a small gear, a motor, a rotating sleeve, a bellows and an adjusting tube, wherein the adjusting tube is fixedly connected to one side of the connecting tube, the bellows is arranged on one side of the adjusting tube, the rotating sleeve and the adjusting tube are movably connected through threads, the conveying tube is movably connected to the other end of the adjusting tube, the large gear is sleeved on the outside of the rotating sleeve, the motor is detachably mounted on one side of the conveying tube, the small gear is mounted on the output end of the motor, and the small gear and the large gear are meshed, the elastic sheet is movably mounted in the conveying tube, the push rod is fixedly connected to the adjusting tube, the conveying tube and the adjusting tube are both made of hard materials, the bellows is a telescopic structure, and a clamping mechanism is installed on the movable frame.

[0009] The utility model is further configured that a mounting frame is provided on the outer side of the movable frame, and the movable frame can be movably mounted in the mounting frame.

[0010] The utility model is further configured that a second hydraulic cylinder is provided on one side of the movable frame, the second hydraulic cylinder is movably connected to the movable frame, a second hydraulic rod is provided at the output end of the second hydraulic cylinder, and the other end of the second hydraulic rod is movably connected to the mounting frame.

[0011] The utility model is further configured as follows: the clamping mechanism comprises a clamping block, a clamping groove, a mounting rod, a mounting sleeve, a limit block, a limit groove and a pull sleeve; the mounting rod is detachably mounted in the mounting sleeve; the clamping groove is arranged in the mounting sleeve; the clamping block is engaged in the clamping groove; the pull sleeve is movably mounted in the mounting rod; the limit groove is arranged at the bottom end of the pull sleeve; the limit block is arranged on one side of the clamping block; and the clamping block is slidably mounted in the limit groove; the configuration of the clamping mechanism facilitates the removal and installation of the atomizer.

[0012] The utility model is further configured that a fixing plate is provided on the outer side of the mounting rod and one end of the mounting sleeve, and the fixing plate is fixedly connected to the mounting sleeve and the mounting rod respectively. The setting of the fixing plate facilitates fixing of the mounting position.

[0013] The utility model is further configured that a sliding block is provided on the outer side of the pull sleeve, a sliding groove is provided on the inner side of the installation rod, and the sliding block is slidably installed in the sliding groove. The configuration of the sliding block and the sliding groove can play a role of limiting.

[0014] The utility model is further configured that a spring is provided in the slide groove, the bottom end of the spring is connected to the top end of the slide block, the spring makes the engagement between the clamping block and the clamping groove more stable, and the use of the clamping mechanism is easier.

[0015] The utility model is further configured that a handle is provided on one side of the pull sleeve, and the handle is fixedly mounted on the top end of the pull sleeve. The configuration of the handle facilitates the use of the pull sleeve.

[0016] (III) Beneficial effects

[0017] Compared with the prior art, the utility model provides a garden greening water-saving device, which has the following

[0018] Beneficial effects:

[0019] 1. The movable device realizes the flexible adjustment of the atomizer angle. This hydraulically driven angle adjustment method is not only simple to operate and quick to respond, but also can accurately control the spraying angle and direction of the atomizer according to the needs of different plants and terrains to achieve targeted irrigation. Compared with the traditional fixed-angle atomizer, the movable device greatly improves the adaptability and flexibility of the atomizer, which can meet the differentiated irrigation needs of different plants and environments, avoid the problem of over-irrigation or under-irrigation, and realize the efficient use of water resources and balanced growth of plants.

[0020] 2. The clamping mechanism realizes the rapid installation and disassembly of the atomizer. The whole process is simple to operate and does not require tools. One person can quickly complete the disassembly and maintenance of the atomizer, which greatly shortens the maintenance time and improves work efficiency. Compared with the traditional bolt connection, the clamping mechanism adopts a unique clamping and sliding fit to realize the rapid disassembly and assembly of the atomizer, greatly improving the convenience and safety of maintenance, and providing a strong guarantee for the daily maintenance and replacement of the atomizer.

[0021] 3. The regulating device realizes the precise regulation of water flow velocity in the delivery pipe. This regulation method has the advantages of rapid response and precise control. It can adjust the water flow velocity in real time according to the terrain and vegetation requirements of different regions, avoiding the problem of too fast or too slow flow, and ensuring the uniformity and effectiveness of irrigation. Compared with the traditional fixed inner wall delivery pipe, the regulating device introduces the innovative design of elastic sheet and top rod, and adjusts the water flow velocity by changing the flow channel cross section, which fully considers the differentiated needs of different regions, improves the accuracy and adaptability of water-saving irrigation, and provides a strong guarantee for the healthy growth of plants. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall structure of a garden greening water-saving device in the utility model;

[0023] Figure 2 for Figure 1 A schematic diagram of the local enlarged structure at point A in the middle;

[0024] Figure 3 It is a cross-sectional structural diagram of the adjusting device part in the utility model;

[0025] Figure 4 It is a cross-sectional structural diagram of the clamping mechanism part of the utility model;

[0026] Figure 5 It is a schematic diagram of the dispersed structure of the clamping block and the pulling sleeve part in the utility model.

[0027] In the figure: 1. atomizer; 2. first hydraulic cylinder; 3. first hydraulic rod; 4. movable frame; 5. connecting pipe; 6. conveying pipe; 7. elastic sheet; 8. push rod; 9. large gear; 10. small gear; 11. motor; 12. rotating sleeve; 13. bellows; 14. adjusting pipe; 15. mounting frame; 16. second hydraulic cylinder; 17. second hydraulic rod; 18. clamping block; 19. clamping groove; 20. mounting rod; 21. mounting sleeve; 22. limit block; 23. limit groove; 24. pulling sleeve; 25. fixing plate; 26. sliding block; 27. sliding groove; 28. spring; 29. ​​handle. DETAILED DESCRIPTION

[0028] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0029] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0030] In the present invention, unless otherwise specified, directions such as "up" and "down" are usually used in reference to the directions shown in the drawings, or in reference to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually used in reference to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0031] See also Figure 1-5A landscaping water-saving device comprises an atomizer 1, a movable device is arranged on one side of the atomizer 1, the movable device comprises a first hydraulic cylinder 2, a first hydraulic rod 3 and a movable frame 4, the atomizer 1 can be movably mounted on one side of the movable frame 4, the first hydraulic cylinder 2 and the atomizer 1 are movably connected, the first hydraulic rod 3 is mounted on the output end of the first hydraulic cylinder 2, the other end of the first hydraulic rod 3 and the movable frame 4 are movably connected, and the first hydraulic cylinder 2 and the first hydraulic rod 3 are symmetrically arranged in two groups, a connecting pipe 5 is arranged at one end of the atomizer 1, and an adjusting device is connected to one end of the connecting pipe 5, and the adjusting device comprises a conveying pipe 6, an elastic sheet 7, a push rod 8, a large gear 9, a small gear 10, a motor 11, and a rotating sleeve 12. , bellows 13 and adjusting tube 14, the adjusting tube 14 is fixedly connected to one side of the connecting tube 5, the bellows 13 is arranged on one side of the adjusting tube 14, the rotating sleeve 12 and the adjusting tube 14 are movably connected by threads, the conveying tube 6 is movably connected to the other end of the adjusting tube 14, the large gear 9 is sleeved on the outside of the rotating sleeve 12, the motor 11 is detachably mounted on one side of the conveying tube 6, the small gear 10 is mounted on the output end of the motor 11, and the small gear 10 and the large gear 9 are meshed, the elastic sheet 7 is movably mounted in the conveying tube 6, the push rod 8 is fixedly connected to the adjusting tube 14, the conveying tube 6 and the adjusting tube 14 are both made of hard materials, the bellows 13 is a telescopic structure, and a clamping mechanism is installed on the movable frame 4.

[0032] A mounting frame 15 is disposed outside the movable frame 4 , and the movable frame 4 can be movably mounted in the mounting frame 15 .

[0033] A second hydraulic cylinder 16 is provided at one side of the movable frame 4 , and the second hydraulic cylinder 16 is movably connected to the movable frame 4 . A second hydraulic rod 17 is provided at the output end of the second hydraulic cylinder 16 , and the other end of the second hydraulic rod 17 is movably connected to the mounting frame 15 .

[0034] In this embodiment, when the angle of the atomizer 1 needs to be adjusted, the first hydraulic cylinder 2 connected to the corresponding side of the atomizer 1 can be opened, and the first hydraulic cylinder 2 extends the first hydraulic rod 3 connected to the output end, and the first hydraulic cylinder 2 arranged on the other side retracts the first hydraulic rod 3 connected to the output end, thereby realizing the left and right angle adjustment of the atomizer 1, and then the two second hydraulic cylinders 16 arranged on one side of the mounting frame 15 can be opened synchronously according to actual conditions, and the second hydraulic cylinder 16 drives the movable frame 4 to rotate through the second hydraulic rod 17 connected to the output end, thereby realizing the front and rear angle adjustment of the atomizer 1, and when the flow rate of the water transported in the delivery pipe 6 needs to be adjusted, the motor 11 is turned on, and the motor 11 drives the movable frame 4 to rotate through the output end. The small moving wheel 10 connected to the output end drives the large gear 9 to rotate, thereby driving the rotating sleeve 12 to rotate. Since the rotating sleeve 12 and the side wall of the adjusting tube 14 are movably connected by threads, the adjusting tube 14 and the connecting tube 5 are fixedly connected, and the side wall of the adjusting tube 14 is designed with a bellows 13, and the delivery pipe 6 is fixed from the outside, when the rotating sleeve 12 rotates, the adjusting tube 14 will slide accordingly in the delivery pipe 6, and the bellows 13 on the adjusting tube 14 will expand and contract, and then the adjusting tube 14 will drive the push rod 8 to move, and then the push rod 8 will push open the elastic sheet 7 in the delivery pipe 6, thereby increasing the gap between the elastic sheets 7, thereby achieving the purpose of adjusting the flow rate of delivered water.

[0035] See also Figure 1-5 As an implementation method of the clamping mechanism: the clamping mechanism includes a clamping block 18, a clamping groove 19, a mounting rod 20, a mounting sleeve 21, a limit block 22, a limit groove 23 and a pull sleeve 24, the mounting rod 20 is detachably installed in the mounting sleeve 21, the clamping groove 19 is opened in the mounting sleeve 21, the clamping block 18 is engaged in the clamping groove 19, the pull sleeve 24 is movably installed in the mounting rod 20, the limit groove 23 is opened at the bottom end of the pull sleeve 24, the limit block 22 is arranged on one side of the clamping block 18, and the clamping block 18 is slidably installed in the limit groove 23.

[0036] A fixing plate 25 is disposed on the outer side of the mounting rod 20 and on one end of the mounting sleeve 21 . The fixing plate 25 is fixedly connected to the mounting sleeve 21 and the mounting rod 20 , respectively.

[0037] A slider 26 is disposed on the outer side of the pull sleeve 24 , a slide groove 27 is provided on the inner side of the mounting rod 20 , and the slider 26 is slidably mounted in the slide groove 27 .

[0038] A spring 28 is provided in the slide groove 27 , and the bottom end of the spring 28 is connected to the top end of the slide block 26 .

[0039] A handle 29 is provided on one side of the pull sleeve 24 , and the handle 29 is fixedly mounted on the top of the pull sleeve 24 .

[0040] More specifically, when the atomizer 1 needs to be dismantled for maintenance or replacement, the handle 29 is pulled, and the handle 29 drives the pull sleeve 24 to move, and at the same time the slider 26 slides in the slide groove 27 and compresses the spring 28, and then the pull sleeve 24 drives the limit groove 23 to move. Due to the special structural design of the limit groove 23 and the limit block 22, when the pull sleeve 24 moves upward, the clamping block 18 gradually moves inward, and one end of the clamping block 18 gradually disengages from the clamping groove 19. When the slider 26 compresses the spring 28 to the limit, the clamping block 18 completely disengages from the clamping groove 19, and the handle 29 is continued to be pulled, so that the mounting rod 20 and the pull sleeve 24 are pulled out of the mounting sleeve 21, and then removed in sequence, and then the atomizer 1 is removed. After maintenance or replacement is completed, the atomizer 1 can be installed in place with reference to the above process.

[0041] In summary, when the overall device is in use or running: when it is necessary to adjust the angle of the atomizer 1, the first hydraulic cylinder 2 connected to the corresponding side of the atomizer 1 can be opened, and the first hydraulic cylinder 2 extends the first hydraulic rod 3 connected to the output end, and the first hydraulic cylinder 2 arranged on the other side retracts the first hydraulic rod 3 connected to the output end, thereby realizing the left and right angle adjustment of the atomizer 1, and then the two second hydraulic cylinders 16 arranged on one side of the mounting frame 15 can be opened synchronously according to actual conditions, and the second hydraulic cylinder 16 drives the movable frame 4 to rotate through the second hydraulic rod 17 connected to the output end, thereby realizing the adjustment of the front and rear angles of the atomizer 1, and when it is necessary to adjust the flow rate of the water transported in the transport pipe 6, the motor 11 is turned on, and the motor 11 drives the large gear 9 to rotate through the small moving wheel 10 connected to the output end, thereby driving the rotating sleeve 12 to rotate. Since the rotating sleeve 12 and the side wall of the adjusting tube 14 are movably connected through threads, the adjusting tube 14 and the connecting tube 5 are fixedly connected, and the side wall of the adjusting tube 14 is designed with a bellows 13, and the delivery tube 6 is fixed from the outside, when the rotating sleeve 12 rotates, the adjusting tube 14 will slide accordingly in the delivery tube 6, and the bellows 13 on the adjusting tube 14 will expand and contract, and then the adjusting tube 14 will drive the push rod 8 to move, and then the push rod 8 will push open the elastic sheet 7 in the delivery tube 6, thereby increasing the gap between the elastic sheets 7, thereby achieving the purpose of adjusting the flow rate of delivered water.

[0042] When the atomizer 1 needs to be dismantled for maintenance or replacement, the handle 29 is pulled, and the handle 29 drives the pull sleeve 24 to move, and the slider 26 slides in the slide groove 27 and compresses the spring 28, and then the pull sleeve 24 drives the limit groove 23 to move. Due to the special structural design of the limit groove 23 and the limit block 22, when the pull sleeve 24 moves up, the clamping block 18 gradually moves inward, and one end of the clamping block 18 gradually disengages from the clamping groove 19. When the slider 26 compresses the spring 28 to the limit, the clamping block 18 completely disengages from the clamping groove 19, and the handle 29 is continued to be pulled, so that the mounting rod 20 and the pull sleeve 24 are pulled out from the mounting sleeve 21, and then removed in sequence, and then the atomizer 1 is removed. After maintenance or replacement is completed, the atomizer 1 can be installed in place with reference to the above process.

[0043] In all the schemes mentioned above, the connection between two parts can be selected according to actual conditions by welding, bolt and nut matching connection, bolt or screw connection or other well-known connection methods, which are not described here one by one. In the above, all fixed connections are preferably welded. Although the embodiments of the utility model have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. A garden greening water-saving device, comprising an atomizer (1), characterized in that: A movable device is provided on one side of the atomizer (1), and the movable device comprises a first hydraulic cylinder (2), a first hydraulic rod (3) and a movable frame (4). The first hydraulic cylinder (2) is connected to the atomizer (1), and the first hydraulic rod (3) is connected to the movable frame (4). The first hydraulic cylinder (2) and the first hydraulic rod (3) are symmetrically arranged in two groups. A connecting pipe (5) is provided at one end of the atomizer (1), and an adjusting device is connected at one end of the connecting pipe (5). The adjusting device comprises a conveying pipe (6), an elastic sheet (7), a push rod (8), a large gear (9), a small gear (10), A motor (11), a rotating sleeve (12), a bellows (13) and an adjusting tube (14), wherein the bellows (13) is arranged on one side of the adjusting tube (14), the rotating sleeve (12) and the adjusting tube (14) are connected, a large gear (9) is sleeved on the outside of the rotating sleeve (12), the motor (11) is installed on one side of the conveying tube (6), the small gear (10) is installed at the output end of the motor (11), and the small gear (10) and the large gear (9) are meshed, the elastic sheet (7) is installed in the conveying tube (6), the push rod (8) is installed in the adjusting tube (14), and a clamping mechanism is installed on the movable frame (4).

2. The gardening water-saving device according to claim 1 is characterized in that: A mounting frame (15) is provided on the outer side of the movable frame (4), and the movable frame (4) can be movably mounted in the mounting frame (15).

3. A landscaping water-saving device according to claim 2, characterized in that: A second hydraulic cylinder (16) is provided on one side of the movable frame (4), the second hydraulic cylinder (16) is movably connected to the movable frame (4), a second hydraulic rod (17) is provided at the output end of the second hydraulic cylinder (16), and the other end of the second hydraulic rod (17) is movably connected to the mounting frame (15).

4. A landscaping water-saving device according to any one of claims 1 to 3, characterized in that: The clamping mechanism comprises a clamping block (18), a clamping groove (19), a mounting rod (20), a mounting sleeve (21), a limiting block (22), a limiting groove (23) and a pulling sleeve (24); the mounting rod (20) is detachably mounted in the mounting sleeve (21); the clamping groove (19) is arranged in the mounting sleeve (21); the clamping block (18) is engaged in the clamping groove (19); the pulling sleeve (24) is movably mounted in the mounting rod (20); the limiting groove (23) is arranged at the bottom end of the pulling sleeve (24); the limiting block (22) is arranged on one side of the clamping block (18); and the clamping block (18) is slidably mounted in the limiting groove (23).

5. The gardening water-saving device according to claim 4 is characterized in that: A fixing plate (25) is provided on the outside of the mounting rod (20) and on one end of the mounting sleeve (21), and the fixing plate (25) is fixedly connected to the mounting sleeve (21) and the mounting rod (20) respectively.

6. A landscaping water-saving device according to claim 5, characterized in that: A sliding block (26) is arranged on the outside of the pull sleeve (24), a sliding groove (27) is arranged on the inside of the installation rod (20), and the sliding block (26) is slidably installed in the sliding groove (27).

7. A garden greening water-saving device according to claim 6, characterized in that: A spring (28) is provided in the slide groove (27), and the bottom end of the spring (28) is connected to the top end of the slide block (26).

8. The gardening water-saving device according to claim 7 is characterized by: A handle (29) is provided on one side of the pull sleeve (24), and the handle (29) is fixedly mounted on the top end of the pull sleeve (24).