Sand pit levelling device

Abstract

This utility model discloses a sand leveling device, including a handle with a mounting sleeve fixedly connected to its bottom end. An adjustment assembly is provided inside the mounting sleeve, comprising a pair of rotating discs. A connecting rod is mounted on one side of each rotating disc. A sliding plate is provided inside the mounting sleeve, with an adjustment groove inside the sliding plate. An insertion groove is provided on one side of the adjustment groove. A step block is slidably connected inside the adjustment groove. A support plate is fixedly connected to the top of the step block. Vertical plates are symmetrically fixedly connected to one side of the support plate. A circular block is provided between the two vertical plates. A movable block is vertically slidably connected to one side of the support plate. The sand rake can automatically rake the sand surface reciprocally, promoting leveling. Furthermore, the spacing of the sand rakes can be quickly adjusted, increasing the flexibility of the spacing adjustment. Individual sand rakes can be quickly disassembled and maintained.

Description

Technical Field

[0001] This utility model relates to the field of sports equipment technology, specifically a sandpit leveling device. Background Technology

[0002] Existing sand levelers have a simple structure, and the spacing of their rake teeth is usually fixed and cannot be adjusted. Since sand pits are mostly set up in the open, they are prone to being mixed with gravel and hard soil. If the rake teeth are too sparse, it is not easy to sift out gravel and soil. If the rake teeth are too dense, it is time-consuming and laborious to level the sand pit. It is not easy to adjust according to the needs of use, which brings inconvenience to users. Publication No. CN213100773U discloses a quick-leveling device for sandpits used in long jump training. Its structure includes a sand-leveling roller, fixed rake teeth, an extension rod, a handle, a support rod, and a spacing adjustment mechanism. This invention addresses the issue of sandpits being prone to accumulating gravel and clods if left unmaintained for extended periods. To remove these, a counter-clockwise rotation of the knob moves the locking bolt upwards, disengaging it from the first limiting groove and releasing the connecting rod. This allows the connecting piece to be rotated 90 degrees counter-clockwise, moving it through the connecting groove to the surface of the fixed rake teeth. This arrangement of the fixed and moving rake teeth increases the rake tooth density, facilitating the sieving of gravel and clods in the sandpit. However, this patent still has the following problems in practical use: The aforementioned device only has two settings for rake tooth density: fixed rake teeth and fixed rake teeth and moving rake teeth side by side. It cannot further adjust the rake tooth density, resulting in low flexibility. Moreover, when the rake teeth break or deform, it is not easy to disassemble and replace individual rake teeth, making maintenance difficult.

[0003] A sandpit leveling device is proposed to address the problems mentioned above. Utility Model Content

[0004] The purpose of this utility model is to provide a sandpit leveling device to solve the problems mentioned in the background art, which are that the rake tooth density of the above-mentioned devices only has two settings: fixed rake tooth and fixed rake tooth and moving rake tooth side by side, which cannot further adjust the rake tooth density. Moreover, when the rake tooth body is broken or deformed, the above-mentioned devices are not easy to disassemble and replace individual rake teeth, resulting in high maintenance difficulty.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a sandpit leveling device, including a handle, the bottom end of which is fixedly connected to an installation sleeve; The mounting sleeve has an adjustment assembly inside, which includes a pair of rotating disks rotatably mounted inside one side of the mounting sleeve. A connecting rod is mounted on one side of each rotating disk. A crossbar is symmetrically fixedly connected to the lower interior of the mounting sleeve. A sliding sleeve is slidably connected to the outside of the crossbar. A sliding plate is fixedly connected between the two sliding sleeves. An adjustment groove is provided inside the sliding plate. An insertion groove is provided on one side of the adjustment groove. A step block is slidably connected inside the adjustment groove. A support plate is fixedly connected to the top of the step block. A vertical plate is symmetrically fixedly connected to one side of the support plate. A connecting shaft is fixedly connected between the two vertical plates. A circular block is rotatably connected to the outside of the connecting shaft. A crank is fixedly connected to the outside of the circular block. A movable block is vertically slidably connected to one side of the support plate. A moving pad is fixedly connected to the top of the movable block. A friction pad is fixedly connected to the bottom of the movable block.

[0006] Preferably, a first motor is fixedly connected to the outside of one side of the mounting sleeve, the output end of the first motor extends into the mounting sleeve and is fixedly connected to a rotating disk, and a sand-raking cone is fixedly connected to the bottom of the step block.

[0007] Preferably, the stepped block is adapted to the insertion slot.

[0008] Preferably, the friction pad is in contact with the surface of the slide plate, and the circular block is connected to the non-axial part of the connecting shaft.

[0009] Preferably, the edges of the two rotating disks are fixedly connected to a rocker shaft, one end of the connecting rod is rotatably connected to the rocker shaft, and the other end of the connecting rod is rotatably connected to the slide plate.

[0010] Preferably, a support assembly is provided below the handlebar, the support assembly including a forked leg fixed to the lower middle part of the handlebar, and a first wide wheel is rotatably connected to the bottom end of the forked leg.

[0011] Preferably, the mounting sleeve is symmetrically rotatably connected to a second wide wheel.

[0012] Compared with the prior art, the beneficial effects of this utility model are: In this sandpit leveling device, during the unidirectional movement of the handle, the sand rake can reciprocate on the sand surface, allowing for rapid adjustment of the spacing between the sand rakes, increasing the flexibility of the spacing adjustment. Individual sand rakes can be quickly disassembled and maintained. The specific details are as follows: 1. By dragging the handle, the sand-raking cones level the sand. The first motor drives the rotating disc to reciprocate via the rocker shaft, which in turn drives the connecting rod to move back and forth. This causes the sliding plate to move the sand-raking cones back and forth. During the unidirectional movement of the handle, the sand-raking cones can reciprocate to rake the sand surface, accelerating its leveling. By shaking the handle, the circular block rotates and moves away from the moving pad, causing the movable block to drive the friction pad away from the sliding plate. This allows the stepped block to slide freely in the adjustment groove, enabling rapid adjustment of the spacing between the sand-raking cones. This increases the flexibility of sand-raking cone spacing adjustment and allows the stepped block to be removed from the insertion groove, enabling quick maintenance of individual sand-raking cones and increasing the practicality of the device. 2. The width of both the first and second wide wheels is wide enough to prevent them from sinking into the sand surface, thereby indirectly controlling the depth of the sand-raking cone inserted into the sand surface and avoiding excessive insertion that would make it difficult to move. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the front structure of this utility model; Figure 2 This is a schematic diagram of the installation structure of the mounting sleeve and the tray; Figure 3 This is a schematic diagram of the installation structure of the skateboard and the vertical board; Figure 4 This is a schematic diagram of the installation structure of the round block and the support plate; Figure 5 This is a schematic diagram of the installation structure of the circular block and the connecting shaft; Figure 6 This is a schematic diagram of the installation structure of the rotating disk and the connecting rod.

[0014] In the diagram: 1. Handlebar; 101. Mounting sleeve; 2. Adjustment assembly; 201. Rotary disc; 202. Connecting rod; 203. Crossbar; 204. Sliding sleeve; 205. Slide plate; 206. Adjustment groove; 207. Insertion groove; 208. Step block; 209. Support plate; 210. Vertical plate; 211. Connecting shaft; 212. Round block; 213. Crank handle; 214. Movable block; 215. Moving pad; 216. Friction pad; 217. Crank shaft; 218. First motor; 219. Sand rake; 3. Support assembly; 301. Forked leg; 302. First wide wheel; 303. Second wide wheel. Detailed Implementation

[0015] 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.

[0016] Please see Figure 1 - Figure 6 The present invention provides a technical solution: a sandpit leveling device, including a handle 1, the bottom end of which is fixedly connected to an installation sleeve 101; An adjustment assembly 2 is provided inside the mounting sleeve 101. The adjustment assembly 2 includes a pair of rotating disks 201, which are rotatably mounted inside the mounting sleeve 101. A connecting rod 202 is installed on one side of the rotating disk 201. A crossbar 203 is symmetrically fixedly connected to the lower part of the mounting sleeve 101. A sliding sleeve 204 is slidably connected to the outside of the crossbar 203. A sliding plate 205 is fixedly connected between the two sliding sleeves 204. An adjustment groove 206 is opened inside the sliding plate 205. An insertion groove 207 is opened on one side of the adjustment groove 206. A step block 208 is slidably connected inside the adjustment groove 206. A support plate 209 is fixedly connected to the top of the step block 208. A vertical plate 210 is symmetrically fixedly connected to one side of the support plate 209. A connecting shaft 211 is fixedly connected between the two vertical plates 210. A round block 212 is rotatably connected to the outside of the connecting shaft 211. A crank is fixedly connected to the outside of the round block 212. 213. A movable block 214 is vertically slidably connected to one side of the pallet 209. A movable pad 215 is fixedly connected to the top of the movable block 214, and a friction pad 216 is fixedly connected to the bottom of the movable block 214. The friction pad 216 is made of rubber and can shrink under compression. At the same time, its high coefficient of friction can effectively prevent the position of the pallet 209 from slipping. The friction pad 216 is attached to the bottom of the movable block 214. After long-term use and wear and aging, it can be scraped off and a new one can be attached. When the slide plate 205 moves, the sliding sleeve 204 will move horizontally on the crossbar 203. The rotating disk 201 is symmetrically installed inside the mounting sleeve 101. The top surface of the movable pad 215 is provided with an arc groove. When the round block 212 rotates and squeezes the movable pad 215, the movable pad 215 will automatically slide and adapt. A vertical groove is opened on one side of the slide plate 205. The vertical groove is located between two vertical plates 210. The movable block 214 can slide inside the vertical groove.

[0017] A first motor 218 is fixedly connected to the outside of one side of the mounting sleeve 101. The output end of the first motor 218 extends into the mounting sleeve 101 and is fixedly connected to a rotating disk 201. A sand rake 219 is fixedly connected to the bottom of the step block 208. The sand rake 219 is welded to the bottom of the step block 208.

[0018] The step block 208 is adapted to the insertion slot 207; the step block 208 must first enter the insertion slot 207 before it can slide into the adjustment slot 206, and it can also be pulled out after the step block 208 enters the insertion slot 207.

[0019] The friction pad 216 is in contact with the surface of the slide plate 205, and the circular block 212 is connected to the non-axial part of the connecting shaft 211. The eccentrically installed circular block 212, after rotation, can ensure the compression of the friction pad 216 and the slide plate 205, thus making it difficult for the step block 208 to move. The non-axial part of the circular block 212 is connected to the connecting shaft 211, so that the rotation of the circular block 212 with the connecting shaft 211 as the rotation axis can realize its approach and distance from the moving pad 215.

[0020] Two rotating disks 201 are fixedly connected to rocker shafts 217 at their edges. One end of a connecting rod 202 is rotatably connected to the rocker shaft 217, and the other end of the connecting rod 202 is rotatably connected to a sliding plate 205. The rocker shaft 217 drives the connecting rod 202 to pull the sliding plate 205 to move horizontally back and forth, which in turn causes the sliding plate 205 to drive the sand rake 219 to move back and forth. Thus, during the unidirectional movement of the rod 1, the sand rake 219 can rake the sand surface back and forth, accelerating its leveling. In addition, the sand rake 219 will fully turn out some gravel and debris inside the sand during the back and forth rakeing process.

[0021] A support assembly 3 is provided below the handle 1. The support assembly 3 includes a forked leg 301 fixed to the lower middle part of the handle 1. The bottom end of the forked leg 301 is rotatably connected to a first wide wheel 302. The outside of the mounting sleeve 101 is symmetrically rotatably connected to a second wide wheel 303. The width of the first wide wheel 302 and the second wide wheel 303 is wide enough to prevent them from sinking into the sand surface. This indirectly controls the depth of the sand rake 219 inserted into the sand surface, avoiding excessive insertion that makes it difficult to move. By pushing the handle 1, the first wide wheel 302 and the second wide wheel 303 can move in close contact with the sand surface, making it easy to apply force. By pressing the top of the handle 1, the mounting sleeve 101 can be tilted upwards, allowing the sand rake 219 to be quickly pulled out of the sand. This prevents the sand rake 219 from being blocked by debris, which would prevent it from moving further. In such cases, lifting the handle 1 to avoid the situation would require more effort.

[0022] Working principle: Before using this sand leveling device, it is necessary to check the overall condition of the device to ensure it can work normally. Figure 1 - Figure 6 As shown, after the entire sand rake 219 is inserted into the sand surface, the handle 1 is dragged to make the sand rake 219 rake the sand flat. At this time, the first motor 218 is started to make the rotating disk 201 rotate, so that the rocker shaft 217 makes a circular motion, while driving the connecting rod 202 to pull. Then the sliding plate 205 moves horizontally back and forth, which in turn drives the sand rake 219 to move back and forth. Thus, during the unidirectional movement of the handle 1, the sand rake 219 can rake the sand surface back and forth, accelerating its flattening. When it is necessary to adjust the spacing of the sand-raking cones 219, the handle 213 is cranked to rotate the round block 212 away from the moving pad 215, thereby causing the movable block 214 to drive the friction pad 216 to disengage from the sliding plate 205. This allows the stepped block 208 to slide freely within the adjustment groove 206, thus enabling rapid adjustment of the spacing of the sand-raking cones 219. This increases the flexibility of adjusting the spacing of the sand-raking cones 219. At the same time, the stepped block 208 can be removed from the insertion groove 207, allowing for quick maintenance of a single sand-raking cone 219 and increasing the practicality of the device. The widths of the first wide wheel 302 and the second wide wheel 303 are both wide enough to prevent them from sinking into the sand surface. This indirectly controls the depth of the sand-raking cone (219) inserted into the sand surface, preventing it from being inserted too deeply and becoming difficult to move.

[0023] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A sandpit leveling device, comprising a handle (1), wherein the bottom end of the handle (1) is fixedly connected to an mounting sleeve (101); characterized in that Also includes: An adjustment assembly (2) is provided inside the mounting sleeve (101). The adjustment assembly (2) includes a pair of rotating disks (201). The rotating disks (201) are rotatably mounted on one side inside the mounting sleeve (101). A connecting rod (202) is installed on one side of the rotating disks (201). A crossbar (203) is symmetrically fixedly connected to the lower interior of the mounting sleeve (101). A sliding sleeve (204) is slidably connected to the outside of the crossbar (203). A sliding plate (205) is fixedly connected between the two sliding sleeves (204). An adjustment groove (206) is provided inside the sliding plate (205). An insertion groove (207) is provided on one side of the adjustment groove (206). A stepped block (208) is slidably connected inside the groove (206). A support plate (209) is fixedly connected to the top of the stepped block (208). A vertical plate (210) is symmetrically fixedly connected to one side of the support plate (209). A connecting shaft (211) is fixedly connected between the two vertical plates (210). A round block (212) is rotatably connected to the outside of the connecting shaft (211). A crank (213) is fixedly connected to the outside of the round block (212). A movable block (214) is vertically slidably connected to one side of the support plate (209). A moving pad (215) is fixedly connected to the top of the movable block (214). A friction pad (216) is fixedly connected to the bottom of the movable block (214).

2. A sandpit levelling device according to claim 1, characterised in that: A first motor (218) is fixedly connected to the outside of one side of the mounting sleeve (101). The output end of the first motor (218) extends into the mounting sleeve (101) and is fixedly connected to a rotating disk (201). A sand-raking cone (219) is fixedly connected to the bottom of the step block (208).

3. A sandpit levelling device according to claim 1, characterised in that: The stepped block (208) is adapted to the insertion slot (207).

4. A sandpit levelling device according to claim 1, characterised in that: The friction pad (216) is attached to the surface of the slide plate (205), and the circular block (212) is connected to the non-axial part of the connecting shaft (211).

5. A sandpit levelling device according to claim 1, characterised in that: The two rotating disks (201) are fixedly connected to the edge portions of the rocker shaft (217), one end of the connecting rod (202) is rotatably connected to the rocker shaft (217), and the other end of the connecting rod (202) is rotatably connected to the slide plate (205).

6. A sandpit levelling device according to claim 1, characterised in that: A support assembly (3) is provided below the handlebar (1). The support assembly (3) includes a forked leg (301) fixed to the lower middle part of the handlebar (1). A first wide wheel (302) is rotatably connected to the bottom end of the forked leg (301).

7. A sandpit levelling device according to claim 6, wherein: The mounting sleeve (101) is symmetrically rotatably connected to a second wide wheel (303).

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