A multifunctional excavating and ramming machine integrating excavating, shoveling, ramming and humidifying

Abstract

The present application provides a kind of multi-functional excavator that integrates digging, shoveling, ramming and humidifying, comprising a small arm, a large arm and an excavator body.The present application provides a kind of multi-functional excavator that integrates digging, shoveling, ramming and humidifying, by modifying and customizing a high-strength steel structure excavator bucket, the bottom plate of the excavator bucket is set as a ramming plate, an attached vibrator is installed, the excavator bucket has the functions of digging and shoveling, and the excavator bucket can also rotate 360° by a top-end rotating device to form a bucket, to perform front shoveling, side shoveling, inclined shoveling and other arbitrary angle construction, a water tank, a water pipe and a spray head are attached, to timely adjust the water content of backfill soil to achieve the best ramming effect, to perform well chamber surrounding backfilling and ramming construction, the attached vibrator has large power, the hydraulic retracting rod is easy to operate, the ramming effect is good, the square ramming plate can be edge-attached and corner-attached to perform all-around ramming, the construction operation is mechanized, time and labor are saved, only one person is needed to simultaneously complete four construction processes, a large amount of manpower is saved, the construction quality is improved, cost is reduced and efficiency is increased.

Description

Technical Field

[0001] This invention relates to the field of backfilling and compaction around roadside manholes, and in particular to a multi-functional excavator and rammer that integrates digging, shoveling, tamping, and humidification. Background Technology

[0002] Backfilling and compaction around road manholes is a crucial step in road construction. Before construction, debris and loose soil around the manholes must be cleared, and suitable backfill materials, such as lime-soil or medium-coarse sand, must be selected to ensure their quality meets requirements. During construction, backfilling should be carried out in layers, with each layer's thickness controlled within a certain range, generally not exceeding 30 centimeters. Small compaction equipment, such as frog-type rammers and impact rammers, should be used for compaction. Near the manholes, manual labor combined with lightweight compaction equipment should be used to prevent damage to the manholes. The compaction degree must be strictly controlled during the process, and each layer should be tested promptly to ensure that the compaction degree meets the standards. Attention should also be paid to protecting the manhole covers and frames to avoid collisions, ultimately ensuring the overall structural stability and quality safety of the road.

[0003] When backfilling and compacting around the roadside manholes, multiple machines are needed to perform excavation, shoveling, compaction, and humidification. Using excavators, plate compactors, and water trucks makes the construction process complex and inefficient. Using manual labor in conjunction with small machinery is also an option, but the small plate compactors have low power and cannot effectively compact the manholes at corners. Manual backfilling and compaction is inefficient, labor-intensive, and time-consuming.

[0004] Therefore, it is necessary to provide a multi-functional excavator and rammer that integrates digging, shoveling, compaction, and humidification to solve the above-mentioned technical problems. Summary of the Invention

[0005] This invention provides a multi-functional excavator and rammer that integrates digging, shoveling, compaction, and humidification. It solves the problems of the need for multiple machines to be used in conjunction with each other for excavation, shoveling, compaction, and humidification during backfilling and compaction around roadside manholes. The construction is complicated and inefficient when using excavators, plate rammers, and water trucks. Manual backfilling and compaction is also inefficient, labor-intensive, and time-consuming due to the low power of small plate rammers, which cannot effectively compact the manhole corners.

[0006] To solve the above-mentioned technical problems, the present invention provides a multi-functional excavator and rammer that integrates digging, shoveling, compaction and humidification, comprising: a forearm, a boom and an excavator body;

[0007] A servo motor is fixedly installed at the bottom inside the forearm. A fixed base is fixedly installed at the bottom of the forearm. A rotating device is rotatably installed at the bottom of the fixed base. A rotating base is fixedly connected to the bottom of the rotating device. The rotating device includes a third rotating shaft, a third gear, a second rotating shaft, a second gear, a first rotating shaft, and a first gear.

[0008] An attached vibrator, wherein the attached vibrator is fixedly installed on one side of the top of the fixed base;

[0009] A bucket is fixedly connected to the bottom of the rotating base, and a rammer plate is fixedly installed on the bottom of the outer surface of the bucket;

[0010] A water tank is fixedly installed on one side of the outer surface of the excavator body. A water pipe is fixedly connected to one side of the water tank, and a nozzle is fixedly connected to one end of the water pipe.

[0011] Preferably, the third rotating shaft is fixedly connected to the bottom end of the output shaft of the servo motor, the third gear is fixedly connected to the middle of the outer surface of the third rotating shaft, the second gear meshes with the surface of the third gear, the second rotating shaft is fixedly connected to the middle of the second gear, the first gear meshes with the surface of the second gear, and the first rotating shaft is fixedly installed in the middle of the first gear.

[0012] Preferably, the bottom end of the second rotating shaft is fixedly connected to the top surface of the bucket.

[0013] Preferably, the boom is disposed on one side of the surface of the excavator body, and the forearm is rotatably mounted on one side of the boom surface.

[0014] Preferably, the water pipe passes through the excavator body, the boom, and the arm.

[0015] Preferably, the end of the water pipe passes through the outer surface of the forearm and is connected to the nozzle.

[0016] Preferably, a pushing device is provided on one side of the outer surface of the forearm. The pushing device includes a first connecting block, a second connecting block, a hydraulic cylinder, and a battery. The first connecting block is fixedly installed on one side of the outer surface of the forearm, the second connecting block is fixedly connected to one side of the first connecting block, the hydraulic cylinder is fixedly installed on the surface of the second connecting block, and the battery is fixedly connected to the other side of the surface of the second connecting block.

[0017] Preferably, the output shaft end of the hydraulic cylinder is fixedly connected to the surface of the nozzle.

[0018] Preferably, the forearm has an internal mounting hole, and both sides of the inner wall of the mounting hole have sliding grooves. An elastic device is fixedly installed inside the sliding groove. The elastic device includes a sliding rod and a spring. The sliding rod is fixedly installed inside the sliding groove, and the spring is sleeved on one side of the outer surface of the sliding rod. Slider blocks are fixedly connected to both sides of the outer surface of the water pipe, and the sliders are sleeved on the other side of the outer surface of the sliding rod. One end of the spring is fixedly connected to the surface of the slider.

[0019] Preferably, a connecting device is fixedly installed on one side of the outer surface of the bucket. The connecting device includes a connecting plate, a vertical plate, an extension block, and a combination block. The connecting plate is fixedly installed on one side of the outer surface of the bucket, the vertical plate is fixedly installed on one side of the connecting plate, the extension block is fixedly installed on one side of the surface of the vertical plate, and the combination block is fixedly installed on one side of the surface of the extension block. The combination block is fixedly connected to the surface of the first connecting block.

[0020] Compared with related technologies, the multi-functional excavator and rammer provided by this invention, which integrates digging, shoveling, compaction, and humidification, has the following beneficial effects:

[0021] This invention provides a multi-functional excavator and tamper integrating digging, shoveling, compaction, and humidification. By modifying and customizing a high-strength steel bucket, with the bucket bottom plate set as a tamping plate and an attached vibrator installed on the upper part of the bucket, the bucket simultaneously performs digging and compaction functions. The bucket can also be rotated 360° into a shovel bucket via a top-mounted rotating device, allowing for front shoveling, side shoveling, and angled shoveling at any angle. Equipped with a water tank, water pipes, and nozzles, it can adjust the moisture content of the backfill soil in a timely manner to achieve the best compaction effect. This device has a simple structure and strong practicality, enabling rapid backfilling and compaction around manholes. The attached vibrator has high power, the hydraulic retraction rod is easy to operate, and the compaction effect is good. Equipped with a square tamping plate, it can compact edges and corners from all directions. The construction operation is mechanized, highly efficient, and saves time and labor. This device integrates digging, shoveling, compaction, and humidification, requiring only one person to complete all four construction processes simultaneously, saving significant manpower, improving construction quality, and achieving cost reduction and efficiency improvement. Attached Figure Description

[0022] Figure 1 A schematic diagram of the structure of a first embodiment of a multi-functional excavator and rammer that integrates digging, shoveling, compaction, and humidification provided by the present invention;

[0023] Figure 2 for Figure 1 The enlarged schematic diagram at point A is shown below;

[0024] Figure 3 for Figure 2 The diagram shows the structure of the rotating device.

[0025] Figure 4 for Figure 1 The diagram shown illustrates the operation of the excavator bucket.

[0026] Figure 5 for Figure 1 The diagram shows the rotation of the excavator bucket;

[0027] Figure 6A schematic diagram of the structure of a second embodiment of a multi-functional excavator and rammer that integrates digging, shoveling, compaction, and humidification provided by the present invention;

[0028] Figure 7 for Figure 6 The enlarged schematic diagram at point B is shown below;

[0029] Figure 8 for Figure 6 The diagram shows the structure of the propulsion device;

[0030] Figure 9 A schematic diagram of the third embodiment of a multi-functional excavator and rammer that integrates digging, shoveling, compaction, and humidification provided by the present invention;

[0031] Figure 10 for Figure 9 The diagram shows the structure of the connecting device.

[0032] Numbered in the diagram: 1. Arm, 2. Servo motor, 3. Fixed base, 5. Rotating base, 6. Rotating device, 61. Third rotating shaft, 62. Third gear, 63. Second rotating shaft, 64. Second gear, 65. First rotating shaft, 66. First gear, 7. Attached vibrator, 8. Bucket, 9. Ramming plate, 10. Water pipe, 11. Nozzle, 12. Water tank, 13. Boom, 14. Excavator body, 16. Pushing device, 161. First connecting block, 162. Second connecting block, 163. Hydraulic cylinder, 164. Battery, 17. Mounting hole, 18. Slide groove, 19. Elastic device, 191. Slide rod, 192. Spring, 20. Slider, 21. Connecting device, 211. Connecting plate, 212. Vertical plate, 213. Extension block, 214. Combination block. Detailed Implementation

[0033] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0034] First Embodiment

[0035] Please refer to the following: Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 ,in, Figure 1 A schematic diagram of the structure of a first embodiment of a multi-functional excavator and rammer that integrates digging, shoveling, compaction, and humidification provided by the present invention; Figure 2 for Figure 1 The enlarged schematic diagram at point A is shown below; Figure 3 for Figure 2 The diagram shows the structure of the rotating device. Figure 4 for Figure 1 The diagram shown illustrates the operation of the excavator bucket. Figure 5 for Figure 1The diagram shows the bucket rotation. A multi-functional excavator and rammer integrating digging, shoveling, compaction, and humidification includes: a boom 1, a main boom 13, and an excavator body 14;

[0036] Servo motor 2 is fixedly installed at the bottom inside the forearm 1. A fixed base 3 is fixedly installed at the bottom of the forearm 1. A rotating device 6 is rotatably installed at the bottom of the fixed base 3. A rotating seat 5 is fixedly connected to the bottom of the rotating device 6. The rotating device 6 includes a third rotating shaft 61, a third gear 62, a second rotating shaft 63, a second gear 64, a first rotating shaft 65, and a first gear 66.

[0037] An attached vibrator 7 is fixedly installed on one side of the top of the fixed base 3;

[0038] A bucket 8 is fixedly connected to the bottom of the rotating seat 5, and a rammer plate 9 is fixedly installed on the bottom of the outer surface of the bucket 8.

[0039] Water tank 12 is fixedly installed on one side of the outer surface of the excavator body 14. A water pipe 10 is fixedly connected to one side of the water tank 12, and a nozzle 11 is fixedly connected to one end of the water pipe 10.

[0040] The third rotating shaft 61 is fixedly connected to the bottom end of the output shaft of the servo motor 2. The third gear 62 is fixedly connected to the middle of the outer surface of the third rotating shaft 61. The second gear 64 meshes with the surface of the third gear 62. The second rotating shaft 63 is fixedly connected to the middle of the second gear 64. The first gear 66 meshes with the surface of the second gear 64. The first rotating shaft 65 is fixedly installed in the middle of the first gear 66.

[0041] The bottom end of the second rotating shaft 63 is fixedly connected to the top surface of the bucket 8.

[0042] The boom 13 is disposed on one side of the surface of the excavator body 14, and the forearm 1 is rotatably mounted on one side of the surface of the boom 13.

[0043] The water pipe 10 passes through the excavator body 14, the boom 13, and the arm 1.

[0044] The end of the water pipe 10 passes through the outer surface of the forearm 1 and is connected to the nozzle 11.

[0045] Water pipe 10 controls the water stored inside water tank 12 to be sprayed out through nozzle 11 via pump body, so as to adjust the moisture content of backfill soil in time to achieve the best compaction effect.

[0046] The working principle of the multi-functional excavator and rammer that integrates digging, shoveling, compaction, and humidification provided by this invention is as follows:

[0047] During operation, earthwork and other excavation work can be carried out first through the front bucket 8;

[0048] The output shaft of the servo motor 2 controls the rotation of the third rotating shaft 61, which in turn drives the third gear 62 to rotate. The rotation of the third gear 62 meshes with the second gear 64, which in turn meshes with the first gear 66. The second gear 64 drives the second rotating shaft 63 to rotate, which in turn drives the rotating seat 5 and the bucket 8 to rotate. The bucket 8 is then adjusted into a shovel bucket, which can perform forward, lateral, and other multi-angle shoveling and transporting operations such as earthwork, bricks, and stones.

[0049] The bottom of the bucket 8 is equipped with a special tamping plate 9, and the upper part of the bucket 8 is equipped with an attached vibrator 7, which enables the bucket to have a tamping function. The tamping plate 9 is a square steel plate, which can tamp the corners and inside and outside corners of the well chamber without dead corners.

[0050] It comes with an external water tank 12, water pipe 10 and nozzle 11, which can adjust the moisture content of the backfill soil in a timely manner to achieve the best compaction effect.

[0051] Compared with related technologies, the multi-functional excavator and rammer provided by this invention, which integrates digging, shoveling, compaction, and humidification, has the following beneficial effects:

[0052] This invention provides a multi-functional excavator and tamper integrating digging, shoveling, compaction, and humidification. By modifying and customizing a high-strength steel bucket 8, with the bottom plate of the bucket 8 configured as a tamping plate 9, and adding an attached vibrator 7 to the upper part of the bucket 8, the bucket 8 simultaneously performs digging and compaction functions. The bucket 8 can also be rotated 360° into a shovel bucket via a top-mounted rotating device 6, allowing for construction at any angle, including front shovel, side shovel, and angled shovel. It is equipped with a water tank 12, water pipes 10, and nozzles 11, which can adjust the moisture content of the backfill soil in a timely manner. To achieve the best compaction effect, this device has a simple structure and strong practicality. It can quickly carry out backfilling and compaction construction around the well chamber. The attached vibrator has high power, the hydraulic retraction rod is easy to operate, and the compaction effect is good. Equipped with a square tamping plate, it can compact the edges and corners in all directions. The construction operation is mechanized, the operation is efficient, and it saves time and labor. This device integrates digging, shoveling, tamping, and humidification. Only one person is needed to complete four construction processes at the same time, saving a lot of manpower and improving the construction quality, thus achieving cost reduction and efficiency improvement.

[0053] Second Embodiment

[0054] Please refer to the following: Figure 6 , Figure 7 and Figure 8Based on the first embodiment of this application, a multi-functional excavator and rammer integrating digging, shoveling, compaction, and humidification is provided. The second embodiment of this application proposes another multi-functional excavator and rammer integrating digging, shoveling, compaction, and humidification. The second embodiment is merely a preferred embodiment of the first embodiment, and its implementation will not affect the independent implementation of the first embodiment.

[0055] Specifically, the second embodiment of this application provides a multi-functional excavator and rammer that integrates digging, shoveling, compaction, and humidification. The multi-functional excavator and rammer has a pushing device 16 on one side of the outer surface of the boom 1. The pushing device 16 includes a first connecting block 161, a second connecting block 162, a hydraulic cylinder 163, and a battery 164. The first connecting block 161 is fixedly installed on one side of the outer surface of the boom 1, the second connecting block 162 is fixedly connected to one side of the first connecting block 161, the hydraulic cylinder 163 is fixedly installed on the surface of the second connecting block 162, and the battery 164 is fixedly connected to the other side of the surface of the second connecting block 162.

[0056] The output shaft end of the hydraulic cylinder 163 is fixedly connected to the surface of the nozzle 11.

[0057] The forearm 1 has an installation hole 17 inside. The inner wall of the installation hole 17 has a sliding groove 18 on both sides. An elastic device 19 is fixedly installed inside the sliding groove 18. The elastic device 19 includes a sliding rod 191 and a spring 192. The sliding rod 191 is fixedly installed inside the sliding groove 18. The spring 192 is sleeved on one side of the outer surface of the sliding rod 191. Slider 20s are fixedly connected to both sides of the outer surface of the water pipe 10. The slider 20s are sleeved on the other side of the outer surface of the sliding rod 191. One end of the spring 192 is fixedly connected to the surface of the slider 20.

[0058] The mounting hole 17 is compatible with the diameter of the water pipe 10. The water pipe 10 is made of rubber, while the water pipe 10 corresponding to the groove 18 is made of corrugated pipe, which can be stretched and stored.

[0059] The working principle of the multi-functional excavator and rammer that integrates digging, shoveling, compaction, and humidification provided by this invention is as follows:

[0060] During operation, the output shaft of the hydraulic cylinder 163 moves first, pushing the nozzle 11 to move. The nozzle 11 drives the water pipe 10 to move towards the bucket 8. When the water pipe 10 is pulled, the corrugated part is stretched, causing the slider 20 to slide on the surface of the slide rod 191 and pull the spring 192.

[0061] As the output shaft of the hydraulic cylinder 163 retracts into the cylinder body, the nozzle 11 returns to its original position, the water pipe 10 moves, and the restoring force of the spring 192 pulls the slider 20 to move and retract, causing the corrugated section to fold back and keep the water pipe 10 installed inside the mounting hole 17.

[0062] Compared with related technologies, the multi-functional excavator and rammer provided by this invention, which integrates digging, shoveling, compaction, and humidification, has the following beneficial effects:

[0063] This invention provides a multi-functional excavator and rammer that integrates digging, shoveling, compaction, and humidification. The output shaft of the hydraulic cylinder 163 moves to drive the nozzle 11 to pull the water pipe 10, so that the water sprayed from the nozzle 11 can not only spray the ground for humidification, but also spray the bucket 8 to clean the soil attached to the inside of the bucket 8, improve the cleanliness of the bucket 8 surface, prevent soil debris from sticking to the surface, facilitate the next use of the excavator, and improve the cleaning effect of this device.

[0064] Third Embodiment

[0065] Please refer to the following: Figure 9 and Figure 10 Based on the first embodiment of this application, a multi-functional excavator and rammer integrating digging, shoveling, compaction, and humidification is provided. The third embodiment of this application proposes another multi-functional excavator and rammer integrating digging, shoveling, compaction, and humidification. The third embodiment is merely a preferred embodiment of the first embodiment, and the implementation of the third embodiment will not affect the separate implementation of the first embodiment.

[0066] Specifically, the difference between the third embodiment of this application and the multi-functional excavator and rammer that integrates digging, shoveling, tamping and humidification is that, in this embodiment, the pushing device 16 is not fixedly connected to the forearm 1, and there is a relatively long distance between the pushing device 16 and the forearm 1.

[0067] A connecting device 21 is fixedly installed on one side of the outer surface of the bucket 8. The connecting device 21 includes a connecting plate 211, a vertical plate 212, an extension block 213, and a combination block 214. The connecting plate 211 is fixedly installed on one side of the outer surface of the bucket 8, the vertical plate 212 is fixedly installed on one side of the connecting plate 211, the extension block 213 is fixedly installed on one side of the surface of the vertical plate 212, and the combination block 214 is fixedly installed on one side of the surface of the extension block 213. The combination block 214 is fixedly connected to the surface of the first connecting block 161.

[0068] The working principle of the multi-functional excavator and rammer that integrates digging, shoveling, compaction, and humidification provided by this invention is as follows:

[0069] During operation, the bucket 8 rotates first, causing the connecting plate 211, the vertical plate 212 and the extension block 213 to move. The extension block 123 then causes the first connecting block 161 to rotate together.

[0070] Compared with related technologies, the multi-functional excavator and rammer provided by this invention, which integrates digging, shoveling, compaction, and humidification, has the following beneficial effects:

[0071] This invention provides a multi-functional excavator and rammer that integrates digging, shoveling, compaction, and humidification. When the bucket 8 rotates, it drives the connecting device 21 to move together. The connecting device 21 pulls and pushes the device 16, which in turn drives the water pipe 10 and the nozzle 11 to move together. This device has a simple structure and strong practicality. The nozzle 11 keeps the position of the bucket 8 consistent with the bucket head and can work in the same direction as the bucket 8 to adjust the moisture content of the backfill soil to achieve the best compaction effect.

[0072] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A multi-functional excavator and rammer integrating digging, shoveling, compaction, and humidification, characterized in that: include: Forearm, boom, and excavator body; A servo motor is fixedly installed at the bottom inside the forearm. A fixed base is fixedly installed at the bottom of the forearm. A rotating device is rotatably installed at the bottom of the fixed base. A rotating base is fixedly connected to the bottom of the rotating device. The rotating device includes a third rotating shaft, a third gear, a second rotating shaft, a second gear, a first rotating shaft, and a first gear. An attached vibrator, wherein the attached vibrator is fixedly installed on one side of the top of the fixed base; A bucket is fixedly connected to the bottom of the rotating base, and a rammer plate is fixedly installed on the bottom of the outer surface of the bucket; A water tank is fixedly installed on one side of the outer surface of the excavator body. A water pipe is fixedly connected to one side of the water tank, and a nozzle is fixedly connected to one end of the water pipe. The third rotating shaft is fixedly connected to the bottom end of the output shaft of the servo motor. The third gear is fixedly connected to the middle of the outer surface of the third rotating shaft. The second gear meshes with the surface of the third gear. The second rotating shaft is fixedly connected to the middle of the second gear. The first gear meshes with the surface of the second gear. The first rotating shaft is fixedly installed in the middle of the first gear. The bottom end of the second rotating shaft is fixedly connected to the top surface of the bucket. The bucket can also be rotated 360° into a shovel bucket by the top rotating device.

2. The multi-functional excavator and rammer integrating digging, shoveling, compaction, and humidification as described in claim 1, characterized in that, The boom is mounted on one side of the excavator body surface, and the forearm is rotatably mounted on one side of the boom surface.

3. The multi-functional excavator and rammer integrating digging, shoveling, compaction, and humidification as described in claim 1, characterized in that, The water pipe passes through the excavator body, the boom, and the arm.

4. The multi-functional excavator and rammer integrating digging, shoveling, compaction, and humidification as described in claim 1, characterized in that, The end of the water pipe passes through the outer surface of the forearm and is connected to the nozzle.

5. The multi-functional excavator and rammer integrating digging, shoveling, compaction, and humidification as described in claim 1, characterized in that, A pushing device is provided on one side of the outer surface of the forearm. The pushing device includes a first connecting block, a second connecting block, a hydraulic cylinder, and a battery. The first connecting block is fixedly installed on one side of the outer surface of the forearm, the second connecting block is fixedly connected to one side of the first connecting block, the hydraulic cylinder is fixedly installed on the surface of the second connecting block, and the battery is fixedly connected to the other side of the surface of the second connecting block.

6. The multi-functional excavator and rammer integrating digging, shoveling, compaction, and humidification as described in claim 5, characterized in that, The output shaft end of the hydraulic cylinder is fixedly connected to the surface of the nozzle.

7. The multi-functional excavator and rammer integrating digging, shoveling, compaction, and humidification as described in claim 1, characterized in that, The forearm has an internal mounting hole, and both sides of the inner wall of the mounting hole have sliding grooves. An elastic device is fixedly installed inside the sliding groove. The elastic device includes a sliding rod and a spring. The sliding rod is fixedly installed inside the sliding groove, and the spring is sleeved on one side of the outer surface of the sliding rod. Slider blocks are fixedly connected to both sides of the outer surface of the water pipe. The sliders are sleeved on the other side of the outer surface of the sliding rod, and one end of the spring is fixedly connected to the surface of the slider.

8. A multi-functional excavator and rammer integrating digging, shoveling, compaction, and humidification as described in claim 5, characterized in that, The pushing device is not fixedly connected to the boom. A connecting device is fixedly installed on one side of the outer surface of the bucket. The connecting device includes a connecting plate, a vertical plate, an extension block, and a combination block. The connecting plate is fixedly installed on one side of the outer surface of the bucket, the vertical plate is fixedly installed on one side of the connecting plate, the extension block is fixedly installed on one side of the surface of the vertical plate, and the combination block is fixedly installed on one side of the surface of the extension block. The combination block is fixedly connected to the surface of the first connecting block.

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