A plant pruning device for landscaping
Patent Information
- Application Number
- CN202522152660.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-11
- Publication Date
- 2026-09-15
- Estimated Expiration
- 2035-10-11
AI Technical Summary
[0003]现有技术下，目前，在园林修剪中，圆球造型的植物是较为常见的修剪对象，现有技术可以使用修剪装置对圆球植物进行修剪，但是在修剪的过程中，修剪下的枝叶很容易掉到植物的树枝内部，后续很难再将掉入树枝内部的枝叶取出，这些被剪下的枝叶会在树枝内部干枯，影响植物的美观，并且现有的修剪装置不能根据植物的大小调整剪刀的位置，只能针对特定大小的植物，不同大小的植物无法适用，因此需要改进出一种园林景观用植物修剪装置来解决上述问题
1、该园林景观用植物修剪装置，通过设置的调节安装机构，在使用过程中，通过设置的蜗杆转动，配合蜗轮柱，使限位板转动，便于实现调节两组安装架位置，用以满足后续对不同型号的绿篱机进行安装，通过设置的第一电机工作，使螺纹杆转动，配合限位杆，使活动板运动，便于实现调节安装板高度，从而满足后续对不同高度的园林景观植物进行修剪使用。
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Figure CN224747055U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of garden pruning technology, specifically a plant pruning device for garden landscapes. Background Technology
[0002] Landscape construction refers to the process of planning, designing, modifying, and managing the natural environment within a certain geographical area by applying the principles of landscape art design and engineering technology, combined with knowledge of natural science and humanities and social sciences. Landscape pruning is an important part of the maintenance and repair of garden seedlings. Pruning different plants according to their growth habits can cultivate beautiful tree shapes. At the same time, tree pruning can further regulate the rational distribution of nutrients, thereby inhibiting excessive growth, promoting flower bud differentiation, achieving the effect of making young trees flower and bear fruit earlier, extending the peak flowering and fruiting period, and rejuvenating old trees.
[0003] Currently, in garden pruning, spherical plants are the most common pruning targets. Existing technology can use pruning devices to prune spherical plants. However, during the pruning process, the pruned branches and leaves easily fall into the plant's branches, making it difficult to remove them later. These pruned branches and leaves will dry inside the branches, affecting the plant's appearance. Furthermore, existing pruning devices cannot adjust the position of the shears according to the size of the plant, and are only suitable for plants of a specific size. They are not applicable to plants of different sizes. Therefore, it is necessary to improve the garden landscape plant pruning device to solve the above problems. Utility Model Content
[0004] The purpose of this utility model is to provide a plant pruning device for garden landscapes to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, the present invention provides the following technical solution: a plant pruning device for garden landscapes, comprising a support frame, a first self-locking universal wheel fixedly connected to the bottom of the support frame, an adjustment and installation mechanism provided at the top of the support frame, a movable support mechanism provided outside the support frame, and an auxiliary collection mechanism provided inside the support frame; The adjustment and installation mechanism includes an adjustment component and an installation component, with the installation component located on the right side of the adjustment component.
[0006] Preferably, the adjustment component includes a first connecting platform, which is fixedly connected to the top of the support frame. A first motor is fixedly connected to the top of the first connecting platform. The output end of the first motor extends through the first connecting platform and is fixedly connected to a threaded rod inside. A limit rod is fixedly connected inside the first connecting platform. A movable plate is slidably connected to the outside of the limit rod. An accordion baffle is fixedly connected to the outside of the movable plate to facilitate adjustment of the installation plate height, thereby meeting the needs of subsequent pruning of garden landscape plants of different heights.
[0007] Preferably, the accordion baffle is fixedly connected to the first connecting platform, the movable plate is threadedly connected to the threaded rod, and the first connecting platform and the movable plate are provided with grooves at corresponding positions, and the movable plate is slidably connected inside the groove, which facilitates a more stable adjustment process.
[0008] Preferably, the installation assembly includes an installation plate fixedly connected to the right side of the movable plate. A second motor is fixedly connected to the top of the installation plate. The output end of the second motor extends through the installation plate to a second connecting platform fixedly connected to the outside. A worm gear is rotatably connected inside the second connecting platform, and a worm wheel column is rotatably connected inside the second connecting platform. A limit plate is fixedly connected to the top of the worm wheel column. A slide rail is fixedly connected inside the second connecting platform, and a first sliding plate is slidably connected inside the slide rail. A limit post is fixedly connected to the top of the first sliding plate, and an installation frame is fixedly connected to the outside of the first sliding plate. This facilitates the adjustment of the positions of the two sets of installation frames to meet the needs of subsequent installation of different models of hedge trimmers.
[0009] Preferably, the worm gear meshes with the worm wheel column, the second connecting platform has a groove at the corresponding position of the first sliding plate, and the first sliding plate is slidably connected inside the groove, the limiting plate has a groove at the corresponding position of the limiting post, and the limiting post is movably connected inside the groove, there are two worm wheel columns, and the two worm wheel columns are symmetrically distributed about the center line of the front of the second connecting platform as the axis of symmetry, there are two first sliding plates, and the two first sliding plates are symmetrically distributed about the center line of the front of the second connecting platform as the axis of symmetry, and there are two mounting brackets, and the two mounting brackets are symmetrically distributed about the center line of the front of the second connecting platform as the axis of symmetry, which facilitates a more stable installation process.
[0010] Preferably, the movable support mechanism includes a limiting frame, which is fixedly connected to the outside of the support frame. A movable frame is slidably connected inside the limiting frame. A second self-locking universal wheel is fixedly connected to the bottom of the movable frame. A sliding rod is fixedly connected to the top of the movable frame. A first spring is fixedly connected to the bottom of the sliding rod. A second sliding plate is fixedly connected to the bottom of the first spring. A locking block is fixedly connected to the bottom of the second sliding plate. A handle is fixedly connected to the top of the second sliding plate. This facilitates adjustment and limiting of the position of the second self-locking universal wheel, thereby meeting the support requirements of the device under different usage environments.
[0011] Preferably, the second sliding plate is slidably connected to the sliding rod, and the limiting frame and the corresponding position of the locking block are provided with a groove, and the locking block is inserted into the groove. There are two limiting frames, and the two limiting frames are symmetrically distributed with the right center line of the support frame as the axis of symmetry. There are four second self-locking casters, and every two second self-locking casters form a group, and the two second self-locking casters are symmetrically distributed with the right center line of the support frame as the axis of symmetry, which facilitates a more stable support process.
[0012] Preferably, the auxiliary collection mechanism includes a collection box slidably connected inside the support frame. A connecting box is fixedly connected to the top of the support frame. A second spring is fixedly connected inside the connecting box. A locking post is fixedly connected to the end of the second spring away from the connecting box. A pull rod is fixedly connected to the end of the locking post near the second spring, which facilitates the adjustment of the locking post position. This allows for the installation and disassembly of the collection box and the support frame, enabling the collection of impurities such as branches pruned from garden landscape plants, while also facilitating subsequent processing by staff.
[0013] Preferably, the pull rod is slidably connected to the connecting box, the locking post is slidably connected to the connecting box, the collecting box has a slot at the corresponding position of the locking post, and the locking post is inserted into the slot. There are two connecting boxes, and the two connecting boxes are symmetrically distributed with the center line of the right side of the support frame as the axis of symmetry, which makes the collection process more stable.
[0014] Compared with the prior art, this utility model provides a plant pruning device for garden landscapes, which has the following beneficial effects: 1. This garden landscape plant pruning device, through its adjustable installation mechanism, allows for the rotation of a worm gear in conjunction with a worm wheel column, which in turn rotates a limiting plate. This facilitates the adjustment of the positions of two sets of mounting frames, enabling the installation of different models of hedge trimmers. The operation of a first motor rotates a threaded rod, which, in conjunction with a limiting rod, moves a movable plate, allowing for the adjustment of the mounting plate height. This, in turn, satisfies the need for pruning garden landscape plants of varying heights.
[0015] 2. This garden landscape plant pruning device, through its movable support mechanism, allows the second sliding plate to move via a pull handle during use. This, in conjunction with the first spring, facilitates the adjustment and limiting of the position of the second self-locking caster wheel, thereby meeting the support requirements of the device under different usage environments.
[0016] 3. This garden landscape plant pruning device, through its auxiliary collection mechanism, allows for the movement of the locking post via a pull rod and a second spring during use. This facilitates the adjustment of the locking post position, enabling the installation and disassembly of the collection box and support frame. It collects branches and other debris pruned from garden landscape plants, facilitating subsequent processing by staff. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Figure 1 This is a schematic diagram of the front structure of this utility model; Figure 2 This is a schematic diagram of the adjustment component structure of this utility model; Figure 3 This is a schematic diagram of the internal structure of the adjustment component of this utility model; Figure 4 This is a schematic diagram of the installation component structure of this utility model; Figure 5 This is a schematic diagram of the internal structure of the mounting component of this utility model; Figure 6 This is a schematic diagram of the active support mechanism of this utility model; Figure 7 This is a schematic diagram of the internal structure of the active support mechanism of this utility model; Figure 8 This is a schematic diagram of the auxiliary collection mechanism of this utility model; Figure 9 This is a schematic diagram of the internal structure of the auxiliary collection mechanism of this utility model.
[0018] In the diagram: 1. Support frame; 2. First self-locking caster wheel; 3. Adjustment and mounting mechanism; 31. Adjustment assembly; 311. First connecting platform; 312. First motor; 313. Movable plate; 314. Bellows baffle; 315. Threaded rod; 316. Limiting rod; 32. Mounting assembly; 321. Mounting plate; 322. Second motor; 323. Second connecting platform; 324. Worm gear; 325. Mounting frame; 326. Worm gear column. 327. Limiting plate; 328. Slide rail frame; 329. First sliding plate; 3210. Limiting post; 4. Movable support mechanism; 41. Limiting frame; 42. Movable frame; 43. Second self-locking caster wheel; 44. Slide rod; 45. First spring; 46. Second sliding plate; 47. Locking block; 48. Handle; 5. Auxiliary collection mechanism; 51. Collection box; 52. Connecting box; 53. Pull rod; 54. Locking post; 55. Second spring. Detailed Implementation
[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0020] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0021] Example 1: Please see Figure 1-5 This utility model provides a technical solution: a plant pruning device for garden landscape, including a support frame 1, a first self-locking universal wheel 2 fixedly connected to the bottom of the support frame 1, an adjustment and installation mechanism 3 provided on the top of the support frame 1, a movable support mechanism 4 provided on the outside of the support frame 1, and an auxiliary collection mechanism 5 provided inside the support frame 1. The adjustment and installation mechanism 3 includes an adjustment component 31 and an installation component 32, with the installation component 32 located on the right side of the adjustment component 31.
[0022] Furthermore, the adjustment component 31 includes a first connecting platform 311, which is fixedly connected to the top of the support frame 1. A first motor 312 is fixedly connected to the top of the first connecting platform 311. The output end of the first motor 312 extends through the first connecting platform 311 and is fixedly connected to a threaded rod 315 inside. A limit rod 316 is fixedly connected inside the first connecting platform 311. A movable plate 313 is slidably connected to the outside of the limit rod 316. An accordion baffle 314 is fixedly connected to the outside of the movable plate 313 to facilitate the adjustment of the height of the mounting plate 321, thereby meeting the needs of subsequent pruning of garden landscape plants of different heights.
[0023] Furthermore, the accordion baffle 314 is fixedly connected to the first connecting platform 311, the movable plate 313 is threadedly connected to the threaded rod 315, and the first connecting platform 311 and the movable plate 313 are provided with grooves at corresponding positions, and the movable plate 313 is slidably connected inside the groove, which facilitates a more stable adjustment process.
[0024] Furthermore, the mounting assembly 32 includes a mounting plate 321, which is fixedly connected to the right side of the movable plate 313. A second motor 322 is fixedly connected to the top of the mounting plate 321. The output end of the second motor 322 extends through the mounting plate 321 and is fixedly connected to a second connecting platform 323. A worm gear 324 is rotatably connected inside the second connecting platform 323. A worm wheel column 326 is rotatably connected inside the second connecting platform 323. A limit plate 327 is fixedly connected to the top of the worm wheel column 326. A slide rail frame 328 is fixedly connected inside the second connecting platform 323. A first sliding plate 329 is slidably connected inside the slide rail frame 328. A limit post 3210 is fixedly connected to the top of the first sliding plate 329. A mounting bracket 325 is fixedly connected to the outside of the first sliding plate 329, which facilitates the adjustment of the positions of the two sets of mounting brackets 325 to meet the needs of subsequent installation of different models of hedge trimmers.
[0025] Furthermore, the worm gear 324 meshes with the worm wheel column 326. The second connecting platform 323 has grooves at corresponding positions to the first sliding plate 329, and the first sliding plate 329 is slidably connected inside the grooves. The limiting plate 327 has grooves at corresponding positions to the limiting post 3210, and the limiting post 3210 is movably connected inside the grooves. There are two worm wheel columns 326, symmetrically distributed about the center line of the front of the second connecting platform 323. There are two first sliding plates 329, symmetrically distributed about the center line of the front of the second connecting platform 323. There are two mounting brackets 325, symmetrically distributed about the center line of the front of the second connecting platform 323, facilitating a more stable installation process.
[0026] Example 2: Based on Example 1, please refer to Figure 6-9 Furthermore, in conjunction with Embodiment 1, the movable support mechanism 4 includes a limiting frame 41, which is fixedly connected to the outside of the support frame 1. A movable frame 42 is slidably connected inside the limiting frame 41. A second self-locking universal wheel 43 is fixedly connected to the bottom of the movable frame 42. A sliding rod 44 is fixedly connected to the top of the movable frame 42. A first spring 45 is fixedly connected to the bottom of the sliding rod 44. A second sliding plate 46 is fixedly connected to the bottom of the first spring 45. A locking block 47 is fixedly connected to the bottom of the second sliding plate 46. A handle 48 is fixedly connected to the top of the second sliding plate 46, which facilitates the adjustment and limiting of the position of the second self-locking universal wheel 43, thereby meeting the support requirements of the device under different usage environments.
[0027] Furthermore, the second sliding plate 46 is slidably connected to the sliding rod 44. The limiting frame 41 and the corresponding position of the locking block 47 are provided with grooves, and the locking block 47 is inserted into the groove. There are two limiting frames 41, and the two limiting frames 41 are symmetrically distributed with the right center line of the support frame 1 as the axis of symmetry. There are four second self-locking casters 43, and every two second self-locking casters 43 form a group. The two second self-locking casters 43 are symmetrically distributed with the right center line of the support frame 1 as the axis of symmetry, which makes the support process more stable.
[0028] Furthermore, the auxiliary collection mechanism 5 includes a collection box 51, which is slidably connected inside the support frame 1. A connecting box 52 is fixedly connected to the top of the support frame 1. A second spring 55 is fixedly connected inside the connecting box 52. A locking post 54 is fixedly connected to the end of the second spring 55 away from the connecting box 52. A pull rod 53 is fixedly connected to the end of the locking post 54 near the second spring 55, which facilitates the adjustment of the position of the locking post 54. This allows for the installation and disassembly of the collection box 51 and the support frame 1, enabling the collection of impurities such as branches pruned from garden landscape plants, while also facilitating subsequent processing by staff.
[0029] Furthermore, the pull rod 53 is slidably connected to the connecting box 52, the locking post 54 is slidably connected to the connecting box 52, the collecting box 51 and the locking post 54 are respectively provided with slots, and the locking post 54 is inserted into the slot. There are two connecting boxes 52, and the two connecting boxes 52 are symmetrically distributed with the right center line of the support frame 1 as the axis of symmetry, which makes the collection process more stable.
[0030] In actual operation, when this device is used, the threaded rod is first made of a T-type threaded rod to give it self-locking properties. The operator pushes the support frame 1, and with the first self-locking caster wheel 2, moves the device to the designated position. Then, according to the needs of pruning garden plants, such as spherical or square shapes, the appropriate model of hedge trimmer is selected for installation. The operator uses tools such as a hex wrench to turn the worm gear 324. The rotation of the worm gear 324, in conjunction with the worm wheel column 326, causes the limiting plate 327 to rotate. This, in conjunction with the limiting column 3210, causes the first sliding plate 329 to slide inside the slide rail frame 328, thereby adjusting the position of the two sets of mounting frames 325 to meet the subsequent requirements. Different models of hedge trimmers are installed using locking bolts to complete the installation. This allows for adjustment of the two mounting brackets 325 to accommodate subsequent installations of different models. After installation, workers adjust the support according to the height of the landscape plants. The first motor 312 rotates the threaded rod 315, which, in conjunction with the limit rod 316, moves the movable plate 313, thereby adjusting the height of the mounting plate 321 to accommodate landscape plants of varying heights. This facilitates the adjustment of the mounting plate 321's height for subsequent pruning of landscape plants of different heights. After adjustment, workers then proceed with further adjustments based on the intended use. The system provides support and adjustment for various environments. When the operator pulls handle 48, the movement of handle 48 causes the second sliding plate 46 to move. This, in conjunction with the first spring 45, moves the locking block 47, which slides within the limiting frame 41 via the movable frame 42, causing the second self-locking caster wheel 43 to move. Once the system provides support for the device in different usage environments, the operator releases handle 48. Under the action of the first spring 45, the locking block 47 engages with the limiting frame 41, facilitating adjustment and limiting of the position of the second self-locking caster wheel 43. This ensures support for the device in different environments. The second motor 322 then operates in conjunction with the hedge trimmer to begin pruning the garden plants. The collection box 51 collects pruned branches and other debris, facilitating subsequent processing by staff. When the collection box 51 needs to be cleaned periodically, staff pull the lever 53. The movement of the lever 53, in conjunction with the second spring 55, causes the locking post 54 to move, thus enabling the installation and disassembly of the collection box 51 and the support frame 1. This allows for the collection of pruned branches and other debris from garden plants while facilitating subsequent processing by staff. The position of the locking post 54 can also be adjusted to facilitate the installation and disassembly of the collection box 51 and the support frame 1.
[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
Claims
1. A plant pruning device for garden landscapes, comprising a support frame (1), characterized in that: The support frame (1) is fixedly connected to the bottom of the first self-locking universal wheel (2), the support frame (1) is provided with an adjustment and installation mechanism (3) at the top, the support frame (1) is provided with a movable support mechanism (4) on the outside, and the support frame (1) is provided with an auxiliary collection mechanism (5) inside. The adjustment and installation mechanism (3) includes an adjustment component (31) and an installation component (32), wherein the installation component (32) is located on the right side of the adjustment component (31).
2. The plant pruning device for garden landscapes according to claim 1, characterized in that: The adjustment assembly (31) includes a first connecting platform (311), which is fixedly connected to the top of the support frame (1). A first motor (312) is fixedly connected to the top of the first connecting platform (311). The output end of the first motor (312) extends through the first connecting platform (311) and is fixedly connected to a threaded rod (315). A limit rod (316) is fixedly connected inside the first connecting platform (311). A movable plate (313) is slidably connected to the outside of the limit rod (316). A bellows baffle (314) is fixedly connected to the outside of the movable plate (313).
3. A plant pruning device for garden landscapes according to claim 2, characterized in that: The accordion baffle (314) is fixedly connected to the first connecting platform (311), the movable plate (313) is threadedly connected to the threaded rod (315), and the first connecting platform (311) and the movable plate (313) are provided with grooves at corresponding positions, and the movable plate (313) is slidably connected inside the groove.
4. A plant pruning device for garden landscapes according to claim 2, characterized in that: The mounting assembly (32) includes a mounting plate (321), which is fixedly connected to the right side of the movable plate (313). A second motor (322) is fixedly connected to the top of the mounting plate (321). The output end of the second motor (322) extends through the mounting plate (321) to the outside and is fixedly connected to a second connecting platform (323). A worm gear (324) is rotatably connected inside the second connecting platform (323). A worm wheel column (326) is rotatably connected inside the second connecting platform (323). A limit plate (327) is fixedly connected to the top of the worm wheel column (326). A slide rail frame (328) is fixedly connected inside the second connecting platform (323). A first sliding plate (329) is slidably connected inside the slide rail frame (328). A limit post (3210) is fixedly connected to the top of the first sliding plate (329). A mounting bracket (325) is fixedly connected to the outside of the first sliding plate (329).
5. A plant pruning device for garden landscapes according to claim 4, characterized in that: The worm (324) meshes with the worm gear column (326). The second connecting platform (323) and the first sliding plate (329) are provided with grooves at corresponding positions, and the first sliding plate (329) is slidably connected inside the groove. The limiting plate (327) and the limiting post (3210) are provided with grooves at corresponding positions, and the limiting post (3210) is movably connected inside the groove. There are two worm gear columns (326), and the two worm gear columns (326) are symmetrically distributed with the center line of the front of the second connecting platform (323) as the axis of symmetry. There are two first sliding plates (329), and the two first sliding plates (329) are symmetrically distributed with the center line of the front of the second connecting platform (323) as the axis of symmetry. There are two mounting brackets (325), and the two mounting brackets (325) are symmetrically distributed with the center line of the front of the second connecting platform (323) as the axis of symmetry.
6. A plant pruning device for garden landscapes according to claim 1, characterized in that: The movable support mechanism (4) includes a limiting frame (41), which is fixedly connected to the outside of the support frame (1). A movable frame (42) is slidably connected inside the limiting frame (41). A second self-locking universal wheel (43) is fixedly connected to the bottom of the movable frame (42). A slide rod (44) is fixedly connected to the top of the movable frame (42). A first spring (45) is fixedly connected to the bottom of the slide rod (44). A second slide plate (46) is fixedly connected to the bottom of the first spring (45). A locking block (47) is fixedly connected to the bottom of the second slide plate (46). A handle (48) is fixedly connected to the top of the second slide plate (46).
7. A plant pruning device for garden landscapes according to claim 6, characterized in that: The second slide plate (46) is slidably connected to the slide rod (44). The limiting frame (41) and the corresponding position of the locking block (47) are provided with slots, and the locking block (47) is inserted into the slot. There are two limiting frames (41), and the two limiting frames (41) are symmetrically distributed with the right center line of the support frame (1) as the axis of symmetry. There are four second self-locking casters (43), and every two second self-locking casters (43) form a group, and the two second self-locking casters (43) are symmetrically distributed with the right center line of the support frame (1) as the axis of symmetry.
8. A plant pruning device for garden landscapes according to claim 1, characterized in that: The auxiliary collection mechanism (5) includes a collection box (51), which is slidably connected inside the support frame (1). A connecting box (52) is fixedly connected to the top of the support frame (1). A second spring (55) is fixedly connected inside the connecting box (52). A locking post (54) is fixedly connected to the end of the second spring (55) away from the connecting box (52). A pull rod (53) is fixedly connected to the end of the locking post (54) near the second spring (55).
9. A plant pruning device for garden landscapes according to claim 8, characterized in that: The pull rod (53) is slidably connected to the connecting box (52), the locking post (54) is slidably connected to the connecting box (52), the collecting box (51) and the locking post (54) are respectively provided with slots, and the locking post (54) is inserted into the slot. There are two connecting boxes (52), and the two connecting boxes (52) are symmetrically distributed with the center line on the right side of the support frame (1) as the axis of symmetry.