A small roadbed filling and tamping device for narrow space operation

Abstract

This utility model provides a small roadbed filling and compaction device for operation in confined spaces, belonging to the field of compaction equipment technology. It includes a motor, a rotating shaft protective shell, a buffer shell, a compaction plate, a rotating rod, a hammer rod, and a connecting block. The rotating shaft protective shell has a set of circular holes on each of its upper two sides, and the motor's bottom connecting plates have a set of circular holes on each of their two sides. The motor's bottom connecting plates are fastened to the upper two sides of the rotating shaft protective shell by screws. The rotating shaft protective shell has a set of circular holes in the center of its top, and the rotating rod has a set of circular heads at its top. The rotating rod and hammer rod, along with a novel transmission device, allow for efficient up-and-down hammering and greater stability. An extended handle device is included, allowing access to the device without personnel by extending the handle in narrow or inaccessible locations or during certain working periods. Multiple buffer devices are incorporated to allow for rapid rebound after hammering, improving the efficiency of the telescopic operation.

Description

Technical Field

[0001] This utility model belongs to the field of compaction equipment technology, and more specifically, it relates to a small roadbed filling and compaction device for operation in narrow spaces. Background Technology

[0002] In road construction and maintenance, carrying out subgrade filling and compaction work in confined spaces is a challenging task. Traditional large-scale compaction equipment, due to its bulky size, is difficult to operate effectively in narrow spaces such as alleys, narrow areas around buildings, and inside underground utility tunnels. Existing small-scale compaction equipment suffers from deficiencies in its transmission mechanism, resulting in low power transmission efficiency and unsatisfactory compaction effects that fail to meet project quality requirements. Furthermore, its short operating handles require operators to frequently bend over or get close to the work surface, increasing labor intensity, easily leading to physical fatigue, and affecting work efficiency and construction safety. Therefore, there is an urgent need to develop a small-scale subgrade filling and compaction device equipped with a new transmission mechanism and an extended handle to effectively solve the challenges of operating in confined spaces and improve construction quality and efficiency.

[0003] Based on the above, it is imperative to develop a small-scale roadbed filling and compaction device for operations in confined spaces. A new transmission device can optimize the power transmission path, improve energy conversion efficiency, and enhance compaction strength and stability; the extended handle design allows workers to maintain a comfortable standing posture, reducing physical exertion, expanding the operating range, and avoiding limb restrictions when working in confined spaces. The combination of these two features will significantly improve the construction quality and efficiency of roadbed compaction in confined spaces, meeting the actual needs of engineering construction. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides a small roadbed filling and compaction device for operations in confined spaces, thereby solving the problems of low transmission efficiency, short handle, and difficulty in entering narrow spaces in existing small roadbed filling and compaction devices for operations in confined spaces.

[0005] This utility model discloses a small roadbed filling and compaction device for operations in confined spaces, achieved through the following specific technical means:

[0006] A small roadbed filling and compaction device for operation in confined spaces includes a motor, a shaft protective shell, a buffer shell, a compaction plate, a rotating rod, a hammer rod, and connecting blocks. The shaft protective shell has a set of circular holes on each of its upper two sides, and the motor's bottom connecting plates on both sides have a set of circular holes, with the motor's bottom connecting plates fastened to the upper two sides of the shaft protective shell by screws. The shaft protective shell has a set of circular holes in the center of its top, and the rotating rod has a set of circular heads at its top. The rotating rod is rotatably connected inside the shaft protective shell, and the circular heads at the top of the rotating rod are rotatably connected to the circular holes at the top of the shaft protective shell. The hammer rod has connecting blocks around its outer ring, and each of the four sides of the connecting blocks has four sets of circular holes. A spring coupling has four sets of circular holes on one side, and this spring coupling is fastened to the connecting blocks around the hammer rod by screws. The buffer shell has two sets of square grooves on its inner side, and the square blocks on both sides of the hammer rod are telescopically connected to the inner side of the buffer shell. The hammer rod has a set of circular holes at its bottom, and the upper connecting rod of the compaction plate is telescopically connected to the bottom of the hammer rod.

[0007] Furthermore, each of the square blocks on both sides of the rotating shaft protective shell is provided with a set of circular holes, and two sets of connecting rods are fastened to the square blocks on both sides of the rotating shaft protective shell by nuts; one side of the connecting rod is provided with a circular hole, and an extension rod is fastened to the circular hole on one side of the connecting rod; the connector on one side of the extension rod is fastened to a handle rod by a connecting block.

[0008] Furthermore, the top circular head of the rotating rod is provided with a set of circular holes, and the top circular head of the rotating rod is tightly connected to the bottom rotating shaft of the motor.

[0009] Furthermore, the bottom of the rotating rod is rotatably connected to the top of the hammer rod; the bottom of the rotating shaft protective shell is provided with a set of threads, and the bottom of the rotating shaft protective shell is fastened to the top of the buffer shell by the threads.

[0010] Furthermore, the bottom of the buffer housing is provided with four sets of circular holes on each of the four sides, and a set of spring couplings is fastened to each of the four sides of the bottom of the buffer housing by screws; a thin spring is movably connected between the spring coupling on the upper part of the hammer rod and the spring coupling on the bottom of the buffer housing.

[0011] Furthermore, a set of thick and short springs is movably connected to the top of the tamping plate, and the thick and short springs are movably connected in the circular hole at the bottom of the hammer rod.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. This utility model, by setting up a rotating rod and a hammer rod, and a novel transmission device, enables efficient up-and-down movement and hammering, and is more stable.

[0014] 2. This utility model, by setting up a handle extension device, can achieve the goal of allowing people to enter the device without entering some narrow or inconvenient locations or during working periods by extending the handle length.

[0015] 3. This utility model improves the efficiency of telescopic work by setting up multiple sets of buffer devices so that it can rebound quickly after being hammered. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of the present invention.

[0017] Figure 2 This is a schematic diagram of the internal structure of the main body of this utility model.

[0018] Figure 3 This is a cross-sectional structural schematic diagram of the handle device of this utility model.

[0019] Figure 4 This is a cross-sectional structural diagram of the hammer rod device connection of this utility model.

[0020] Figure 5 This is a cross-sectional structural schematic diagram of the compaction device of this utility model.

[0021] Figure 6 This is a cross-sectional structural diagram of the motor device connection of this utility model.

[0022] Figure 7 This is a schematic diagram of the connection surface structure of the rotating rod and the hammer rod of this utility model.

[0023] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0024] 1. Motor; 2. Shaft protective shell; 3. Buffer shell; 4. Ramming plate; 5. Connecting rod; 6. Rotating rod; 7. Hammer rod; 8. Spring coupling; 401. Thick short spring; 501. Extended rod; 502. Connecting block; 503. Handle rod; 801. Thin spring. Detailed Implementation

[0025] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0026] Example:

[0027] As attached Figure 1 To be continued Figure 7 As shown:

[0028] This utility model provides a small roadbed filling and compaction device for operation in confined spaces, including a motor 1, a shaft protective shell 2, a buffer shell 3, a compaction plate 4, a rotating rod 6, a hammer rod 7, and a connecting block 502; the shaft protective shell 2 has a set of circular holes on each of its upper two sides, and the motor 1 has a set of circular holes on each of its bottom two connecting plates, and the bottom connecting plates of the motor 1 are fastened to the upper two sides of the shaft protective shell 2 by screws; the shaft protective shell 2 has a set of circular holes in the middle of its top, and the rotating rod 6 has a set of circular heads on its top, and the rotating rod 6 is rotatably connected to the shaft. Inside the protective shell 2, the top circular head of the rotating rod 6 is rotatably connected to the top circular hole of the rotating shaft protective shell 2; the outer ring of the hammer rod 7 is provided with a connecting block, and each of the four sides of the connecting block of the outer ring of the hammer rod 7 is provided with four sets of circular holes; one side of the spring sleeve connector 8 is provided with four sets of circular holes, and one side of the spring sleeve connector 8 is fastened to the connecting block of the outer ring of the hammer rod 7 by screws; the inner side of the buffer shell 3 is provided with two sets of square grooves, and the square blocks on both sides of the hammer rod 7 are telescopically connected to the inner side of the buffer shell 3; the bottom of the hammer rod 7 is provided with a set of circular holes, and the upper connecting rod of the tamping plate 4 is telescopically connected to the bottom of the hammer rod 7.

[0029] The rotating shaft protective shell 2 has a set of circular holes on each of its two square blocks, and two sets of connecting rods 5 are fastened to the square blocks on both sides of the rotating shaft protective shell 2 by nuts. One side of each connecting rod 5 has a circular hole, and an extension rod 501 is fastened to the circular hole on one side of the connecting rod 5. A handle 503 is fastened to the connector on one side of the extension rod 501 via a connecting block 502. The circular hole design facilitates flexible assembly and angle adjustment between the connecting rod 5, the rotating shaft protective shell 2, and the extension rod 501, ensuring the stability of the transmission process. The nut fastening method ensures a firm connection between all components, preventing loosening due to vibration during operation. The rigid connection between the extension rod 501 and the handle 503 via the connecting block 502 effectively extends the operating distance, allowing operators to work in confined spaces without having to be close to the compaction components, reducing labor intensity and improving operational safety and convenience.

[0030] The rotating rod 6 has a set of circular holes on its top circular head, which is securely connected to the bottom shaft of the motor 1. The circular holes on the top circular head of the rotating rod 6 allow for precise alignment with the bottom shaft of the motor 1 via connecting components such as pins, ensuring coaxiality and stability of power transmission and preventing power loss or equipment vibration due to assembly errors. The secure connection between the rotating rod 6 and the motor shaft efficiently transmits the rotational power output by the motor to the compaction mechanism.

[0031] The bottom of the rotating rod 6 is rotatably connected to the top of the hammer rod 7. The bottom of the rotating shaft protective shell 2 is provided with a set of threads, and the bottom of the rotating shaft protective shell 2 is fastened to the top of the buffer shell 3 by the threads. The rotatable connection design between the bottom of the rotating rod 6 and the hammer rod 7 allows the rotational motion of the rotating rod to be flexibly converted into the vertical tamping action of the hammer rod. Through reasonable transmission angle and clearance control, the compaction efficiency is improved and mechanical wear is reduced. The threaded fastening structure at the bottom of the rotating shaft protective shell 2 can not only achieve quick disassembly and assembly with the buffer shell 3, facilitating equipment maintenance and component replacement, but also protect the internal devices.

[0032] The buffer housing 3 has four sets of circular holes on each of its four bottom sides, and each of these holes is fastened to a set of spring couplings 8 by screws. A thin spring 801 is movably connected between the spring coupling 8 on the upper part of the hammer rod 7 and the spring coupling 8 on the bottom of the buffer housing 3. The circular holes and screw fastening structure on the bottom of the buffer housing 3 facilitate the precise installation and secure fixing of the spring couplings 8, ensuring the reliability of the connections between the components. The thin spring 801 connects the upper and lower spring couplings 8, effectively buffering the impact force of the hammer rod 7 during tamping operations, reducing the transmission of equipment vibration, protecting the internal structure of the tamping device, reducing the vibration felt by operators, improving the comfort and safety of equipment use, and allowing the hammer rod 7 to rebound quickly.

[0033] Among them, a set of thick and short springs 401 are movably connected to the top of the tamping plate 4, and the thick and short springs 401 are movably connected in the circular hole at the bottom of the hammer rod 7. The thick and short springs 401 form an elastic connection between the tamping plate 4 and the hammer rod 7. When the hammer rod drives the tamping plate to perform tamping operation, the thick and short springs can effectively absorb and buffer the instantaneous impact force to avoid damage to the components caused by rigid collision. At the same time, through its own deformation, it stores and releases energy to help the tamping plate compact the roadbed more evenly, thereby improving the tamping effect and operational stability.

[0034] The specific usage and function of this embodiment are as follows:

[0035] In this invention, the rotating rod 6 is driven to rotate by the starting motor 1. The protrusion at the bottom of the rotating rod 6 rotates and pushes the protrusion at the top of the hammer rod 7, thereby extending and retracting the hammer rod 7. The hammer rod 7 drives the tamping plate 4 to compact the ground downwards. After the tamping plate 4 has finished compacting, the hammer rod 7 rebounds quickly and rises due to the elasticity of the thick short spring 401 and the thin spring 801. The rotating shaft protective shell 2 and the buffer shell 3 are fixed and do not move, which plays a role in protecting the internal device and restricting its movement trajectory. When working, the operator holds the handle 503, which can be extended by the extension rod 501 to increase the distance between the handle 503 and the main device, thus meeting the working needs of some narrow and inconvenient positions for personnel to enter.

[0036] Any aspects of this utility model not described in detail are well-known technologies to those skilled in the art.

Claims

1. A small roadbed filling and compaction device for operation in confined spaces, characterized in that: Includes a motor (1), a shaft protective shell (2), a buffer shell (3), a tamping plate (4), a rotating rod (6), a hammer rod (7), and a connecting block (502); The upper two sides of the shaft protective shell (2) are provided with a set of circular holes, and the bottom two connecting plates of the motor (1) are provided with a set of circular holes. The bottom connecting plates of the motor (1) are fastened to the upper two sides of the shaft protective shell (2) by screws. The top center of the shaft protective shell (2) is provided with a set of circular holes, and the top of the rotating rod (6) is provided with a set of circular heads. The rotating rod (6) is rotatably connected inside the shaft protective shell (2), and the circular heads at the top of the rotating rod (6) are rotatably connected inside the circular holes at the top of the shaft protective shell (2). The hammer rod (7) has a connecting block on its outer ring, and four sets of circular holes are provided on each of the four sides of the connecting block on the outer ring of the hammer rod (7); the spring sleeve connector (8) has four sets of circular holes on one side, and the spring sleeve connector (8) is fastened to the connecting block on the outer ring of the hammer rod (7) by screws; the buffer housing (3) has two sets of square grooves on its inner side, and the square blocks on both sides of the hammer rod (7) are telescopically connected to the inner side of the buffer housing (3); the hammer rod (7) has a set of circular holes at its bottom, and the upper connecting rod of the tamping plate (4) is telescopically connected to the bottom of the hammer rod (7).

2. The small roadbed filling and compaction device for operation in confined spaces as described in claim 1, characterized in that: The rotating shaft protective shell (2) has a set of circular holes on each of the square blocks on both sides, and two sets of connecting rods (5) are fastened to the square blocks on both sides of the rotating shaft protective shell (2) by nuts; a circular hole is provided on one side of the connecting rod (5), and an extension rod (501) is fastened to the circular hole on one side of the connecting rod (5); a handle (503) is fastened to the connector on one side of the extension rod (501) by a connecting block (502).

3. A small roadbed filling and compaction device for operation in confined spaces as described in claim 1, characterized in that: The top circular head of the rotating rod (6) is provided with a set of circular holes, and the top circular head of the rotating rod (6) is tightly connected to the bottom shaft of the motor (1).

4. A small roadbed filling and compaction device for operation in confined spaces as described in claim 1, characterized in that: The bottom of the rotating rod (6) is rotatably connected to the top of the hammer rod (7); the bottom of the rotating shaft protective shell (2) is provided with a set of threads, and the bottom of the rotating shaft protective shell (2) is fastened to the top of the buffer shell (3) by the threads.

5. A small roadbed filling and compaction device for operation in confined spaces as described in claim 1, characterized in that: The bottom of the buffer housing (3) is provided with four sets of circular holes on each of the four sides, and a set of spring couplings (8) are fastened to each of the four sides of the bottom of the buffer housing (3) by screws; a thin spring (801) is movably connected between the spring coupling (8) on the upper part of the hammer rod (7) and the spring coupling (8) on the bottom of the buffer housing (3).

6. A small roadbed filling and compaction device for operation in confined spaces as described in claim 1, characterized in that: The top of the tamping plate (4) is movably connected to a set of thick and short springs (401), and the thick and short springs (401) are movably connected in the circular hole at the bottom of the hammer rod (7).

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