Highway roadbed pile driver

Abstract

The utility model relates to the technical field of pile drivers, and provides a highway subgrade pile driver which comprises a rotary excavating drilling tool, a rotary excavating bin gate is hinged to the bottom of the rotary excavating drilling tool, an opening and closing mechanism is arranged in the rotary excavating drilling tool and comprises a push rod, and a first push plate slidably connected with the inner wall of the rotary excavating drilling tool is arranged below the push rod. A second pushing plate is fixedly connected to the lower portion of the first pushing plate, a fixing plate is further fixed to the inner wall of the rotary excavating drilling tool and located below the first pushing plate, an elastic space is defined by the first pushing plate, the second pushing plate, the fixing plate and the inner wall of the rotary excavating drilling tool, and an elastic piece is arranged in the elastic space. The lower end of the second pushing plate is connected with a clamping piece, a clamping groove is fixed to the upper portion of the rotary excavating bin door, and the pushing rod can move up and down to enable the second pushing plate to drive the clamping piece to be inserted into or separated from the clamping groove. The pile driver has the advantages that the pile driver automatically opens and closes the rotary excavating bin gate, so that soil taken in the pile driving operation is quickly discharged out of the rotary excavating drilling tool, and continuous construction can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of pile drivers, and in particular to a highway roadbed pile driver. Background Art

[0002] With the increasingly stringent environmental protection requirements for urban construction, rotary drilling pile drivers have emerged in the construction of highway subgrades. They use a power head, a short spiral drill bit or a rotary bucket, and use powerful torque to directly rotate and excavate drill residues such as soil or gravel, and then quickly pull them out of the hole. Dry construction can be achieved without the need for mud support. Even in special strata that require mud wall protection, the mud only plays a supporting role. The mud content in drilling is quite low, which greatly reduces the pollution source, thereby reducing construction costs and improving the construction environment. It has high hole-making efficiency and good environmental protection.

[0003] On this basis, the drilling tools that go with it also need to be able to achieve rotary excavation, quickly pull the excavated materials out of the hole, and be able to discharge the soil in time to improve construction efficiency. Utility Model Content

[0004] The utility model provides a highway roadbed pile driver, which realizes automatic opening and closing of a rotary drilling chamber door by a rotary drilling tool, so that soil obtained during pile driving operation can be quickly discharged from the rotary drilling tool, and continuous construction can be achieved.

[0005] To this end, the present application provides a highway roadbed pile driver, the technical solution adopted is as follows:

[0006] A highway roadbed pile driver comprises a rotary drilling tool, which is a cylindrical structure with a soil extraction bin inside and a rotary drilling bin door hinged at the bottom. The rotary drilling tool also comprises an opening and closing mechanism inside, and the opening and closing mechanism comprises a pushing rod arranged along the axial direction of the rotary drilling tool, a pushing plate 1 arranged horizontally and slidably connected to the inner wall of the rotary drilling tool is provided below the pushing rod, a vertically arranged pushing plate 2 is fixedly connected below the pushing plate 1, and a fixing plate is also fixed on the inner wall of the rotary drilling tool.

[0007] The fixed plate is located below the push plate 1, and the push plate 1, the push plate 2, the fixed plate and the inner wall of the rotary drilling tool form an elastic space, and an elastic member is provided inside the elastic space, and the elastic force of the elastic member acts on the push plate 1. The lower end of the push plate 2 is connected with a clamping member, and a clamping groove is fixed above the rotary drilling bin door, and the push rod can drive the push plate 2 to drive the clamping member to insert into or out of the clamping groove through up and down movement.

[0008] A further technical solution is that the clamping part includes a horizontally arranged support rod, a fixed bracket is fixed on the inner wall of the rotary drilling tool, a support shaft is fixed on the fixed bracket, both ends of the support rod are rotatably connected to the push plate 2 and the support shaft respectively, an arc plate is fixed on the end of the support rod connected to the support shaft, an insertion block is fixed on the other end of the arc plate, and the insertion block can be inserted into the clamping groove to lock the rotary drilling chamber door.

[0009] A further technical solution is that a clamping plate is vertically fixed above the rotary drilling silo door, and the clamping groove is provided on the clamping plate.

[0010] A further technical solution is that the lower end surface of the insertion block is inclined, and the upper end surface of the clamping plate and the lower end surface of the insertion block are inclined in the same direction.

[0011] A further technical solution is that a receiving hole for accommodating the movement of the camber plate is provided on the side wall of the rotary drilling tool.

[0012] A further technical solution is that a soil inlet is provided on the rotary drilling bin door, and rotary drilling teeth are fixed at the soil inlet.

[0013] A further technical solution is that the push rod passes through the top of the rotary drilling tool and is driven by a cylinder.

[0014] A further technical solution is that a blocking plate is fixed inside the rotary drilling tool, and the blocking plate isolates the opening and closing mechanism from the soil borrowing bin.

[0015] A further technical solution is that the elastic member is a spring, and two ends of the spring are respectively fixed to the pushing plate 1 and the fixing plate.

[0016] A further technical solution is that the push plate 1 is slidably connected to the inner wall of the rotary drilling tool through a guide slide assembly, and the guide slide assembly includes a slide rail and a slide block.

[0017] The working principle and beneficial effects of this application are:

[0018] Through the opening and closing mechanism, the push rod and the elastic part are used together to make the rotary drilling tool in the operation project. The push rod presses the push plate to open the rotary drilling door to unload the soil. After the soil unloading is completed, the pressurizing device of the pile driver itself is used to press the rotary drilling tool to automatically close the rotary drilling door, thereby realizing the automatic opening and closing of the rotary drilling door by the rotary drilling tool, so that the soil taken during the piling operation can be quickly discharged from the rotary drilling tool, and the pile driver in the rotary drilling operation can be cooperated to achieve continuous construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0020] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0021] Figure 2 This is a schematic diagram of the rotary drilling tool structure described in the embodiment of the present application;

[0022] Figure 3 This is a schematic diagram of the internal structure of the rotary drilling tool described in the embodiment of the present application;

[0023] Figure 4 This is a schematic diagram of the structure of the rotary drilling silo door described in an embodiment of the present application.

[0024] In the figure: 1. rotary drilling tool; 11. soil bin; 12. rotary drilling bin door; 121. clamping plate; 122. soil inlet; 123. rotary drilling tooth; 1210. clamping groove; 131. push rod; 132. push plate 1; 133. push plate 2; 134. fixed plate; 135. elastic member; 136. support rod; 137. fixed bracket; 138. support shaft; 139. camber plate; 1391. insertion block; 1390. accommodation hole; 14. blocking plate; 15. slide rail; 16. slide block; 2. amplitude change mechanism; 3. mast; 4. main and auxiliary winches; 5. power head; 6. drill rod. DETAILED DESCRIPTION

[0025] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] like Figure 1-Figure 4 As shown, a highway roadbed pile driver includes a rotary drilling tool 1, the rotary drilling tool 1 is a cylindrical structure, the interior of which is a soil extraction bin 11, and a rotary bin door 12 is hinged at the bottom. The rotary drilling tool 1 also includes an opening and closing mechanism, and the opening and closing mechanism includes a push rod 131 arranged along the axial direction of the rotary drilling tool 1, and a push plate 132 arranged horizontally and slidably connected to the inner wall of the rotary drilling tool 1 is provided below the push rod 131, and a push plate 2 133 arranged vertically is fixedly connected below the push plate 132, and a fixed plate 134 is also fixed on the inner wall of the rotary drilling tool 1. The push plate 132 is slidably connected to the inner wall of the rotary drilling tool 1 through a guide slide assembly, and the guide slide assembly includes a slide rail 15 and a slide block 16.

[0027] Among them, the fixed plate 134 is located below the push plate 1 132, and the push plate 1 132, the push plate 2 133, the fixed plate 134 and the inner wall of the rotary drilling tool 1 form an elastic space, and the elastic member 135 is provided inside the elastic space, and the elastic force of the elastic member 135 acts on the push plate 1 132. The lower end of the push plate 2 133 is connected with a clamping member, and a clamping groove 1210 is fixed above the rotary drilling chamber door 12, and the push rod 131 can drive the push plate 2 133 to drive the clamping member to insert into or out of the clamping groove 1210 through up and down movement.

[0028] like Figure 3 As shown, the clamping member includes a horizontally arranged support rod 136, a fixed bracket 137 is also fixed on the inner wall of the rotary drilling tool 1, a support shaft 138 is fixed on the fixed bracket 137, the two ends of the support rod 136 are rotatably connected to the push plate 133 and the support shaft 138 respectively, and an arc plate 139 is also fixed to one end of the support rod 136 connected to the support shaft 138, and an insertion block 1391 is fixed to the other end of the arc plate 139, and the insertion block 1391 can be inserted into the clamping groove 1210 to lock the rotary digging chamber door 12. A clamping plate 121 is vertically fixed above the rotary digging chamber door 12, and the clamping groove 1210 is opened on the clamping plate 121. The lower end face of the insertion block 1391 is inclined, and the upper end face of the clamping plate 121 and the lower end face of the insertion block 1391 are inclined in the same direction.

[0029] like Figure 1 As shown, the mechanical device of the pile driver mainly includes a luffing mechanism 2, a mast 3, a main and auxiliary winch 4, a power head 5, a follower frame, a pressurizing device, a drill rod 6, a rotary drilling tool 1, etc. The parallelogram luffing mechanism 2, a self-lifting and folding mast 3, automatic control and detection of the main engine power, automatic detection and adjustment of the verticality of the drill rod 6, and drilling depth preset and monitoring are adopted. The whole machine adopts pilot control and load sensing to maximize the convenience, sensitivity, safety and comfort of operation.

[0030] The pile driver firstly uses its own walking function and the mast 3 amplitude mechanism 2 to enable the rotary drilling tool 1 to correctly reach the pile position, and then uses the mast 3 to guide the lowering of the drill rod 6, and puts the rotary drilling tool 1 at the bottom of the drill rod 6 into the hole position. The power head 5 of the pile driver provides torque for the drill rod 6, and the pressure device transmits the pressure to the rotary drilling tool 1 through the pressure power head 5. The rotary drilling tool 1 will break the broken rock and soil of the highway subgrade and directly load it into the soil taking bin 11, and then the pile driver lifting device and the drill rod 6 will lift the rotary drilling tool 1 out of the hole to unload the soil, and the cycle is repeated, and soil is continuously taken and unloaded until the designed depth is met. In addition, for the rock and soil layer with good cohesion of the highway subgrade, dry or clear water drilling technology can be used, while for the loose and easily collapsed strata of the subgrade, static mud wall drilling technology can be used.

[0031] In this process, the rotary drilling tool 1 cooperates well with the drill rod 6. When taking soil, the drill rod 6 puts the rotary drilling tool 1 at the bottom into the hole to take soil by rotary excavation, wherein the rotary excavation chamber door 12 is provided with a soil inlet 122, and a rotary excavation tooth 123 is fixed at the soil inlet 122. Thus, the pile driving and soil taking process is completed by rotating and applying force downward.

[0032] When unloading soil, the drill rod 6 quickly lifts out the rotary drilling tool 1 and moves to the unloading position. The cylinder controls the push rod 131 to push the push plate 1 132 downward. The push plate 1 132 compresses the elastic member 135 and drives the push plate 2 133 to move downward. The elastic member 135 is a spring, and its two ends are respectively fixed on the push plate 1 132 and the fixed plate 134. At this time, the elastic member 135 is compressed and stored. The push plate 2 133 presses the support plate downward with the support shaft 138 as the base point, so that the other end of the support plate drives the arc plate 139 to rotate upward, so that the insertion block 1391 is out of the clamping groove 1210. At this time, the rotary excavation bin door 12 is opened downward by gravity and the pressure of the sand in the soil bin 11, and the sand is unloaded. During the unloading process, the push rod 131 is reset, and the push plate 1 132 and the push plate 2 133 are reset by the elastic member 135.

[0033] After the soil unloading is completed, the rotary drilling tool 1 moves downward and tilts to one side, and the rotary excavation chamber door 12 is closed by the ground. During the closing process of the rotary excavation chamber door 12, the clamping plate 121 gradually moves upward, and its upper end surface gradually contacts the lower end surface of the insertion block 1391. Because the upper end surface of the clamping plate 121 and the lower end surface of the insertion block 1391 are inclined in the same direction, the clamping plate 121 will push the insertion block 1391 to rotate in the direction of escaping from the clamping groove 1210. At this time, the support rod 136 drives the push rod 1311 and the push rod 1312 to move downward, and the elastic member 135 is compressed; when the clamping plate 121 moves to the position where the insertion block 1391 enters the clamping groove 1210, the thrust on the insertion block 1391 disappears, and the elastic member 135 drives the push plate 132 and the push plate 2 133 to reset. At this time, the rotary excavation chamber door 12 is locked, and the soil extraction process continues.

[0034] Through the opening and closing mechanism, by utilizing the joint action of the push rod 131 and the elastic member 135, during the operation of the rotary drilling tool 1, the push rod 131 presses the push plate 132 to open the rotary drilling door 12 to unload the soil. After the soil unloading is completed, the pressurizing device of the pile driver itself is used to press the rotary drilling tool 1 to automatically close the rotary drilling door 12, thereby realizing the automatic opening and closing of the rotary drilling door 12 by the rotary drilling tool 1, so that the soil taken during the piling operation can be quickly discharged from the rotary drilling tool 1, and the pile driver of the rotary drilling operation can be cooperated to achieve continuous construction.

[0035] like Figure 3As shown, in order to prevent the soil bin 11 and the opening and closing mechanism from interfering with each other, a blocking plate 14 is fixed inside the rotary drilling tool 1, and the blocking plate 14 isolates the opening and closing mechanism from the soil bin 11. In order to ensure the volume of the soil bin 11, the opening and closing mechanism is arranged inside the rotary drilling tool 1 close to the side wall. For this reason, in order to ensure that the movement of the radian plate 139 is not interfered with, an accommodating hole 1390 for accommodating the movement of the radian plate 139 is opened on the side wall of the rotary drilling tool 1.

[0036] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A highway roadbed pile driver, comprising a rotary drilling tool (1), wherein the rotary drilling tool (1) is a cylindrical structure, the interior of which is a soil extraction bin (11), and a rotary drilling bin door (12) is hinged at the bottom, characterized in that: The rotary drilling tool (1) further comprises an opening and closing mechanism inside, the opening and closing mechanism comprising a pushing rod (131) arranged along the axial direction of the rotary drilling tool (1), a pushing plate 1 (132) arranged horizontally and slidably connected to the inner wall of the rotary drilling tool (1) is provided below the pushing rod (131), a pushing plate 2 (133) arranged vertically is fixedly connected below the pushing plate 1 (132), a fixing plate (134) is also fixed on the inner wall of the rotary drilling tool (1), the fixing plate (134) is located below the pushing plate 1 (132), the pushing plate 1 (132), the fixing plate (134) and the inner wall of the rotary drilling tool (1) enclose an elastic space, an elastic member (135) is provided inside the elastic space, and the elastic force of the elastic member (135) acts on the pushing plate 1 (132); A clamping piece is connected to the lower end of the second push plate (133), a clamping groove (1210) is fixed above the rotary excavator bin door (12), and the push rod (131) can drive the second push plate (133) to insert into or out of the clamping groove (1210) through up and down movement.

2. A highway roadbed pile driver according to claim 1, characterized in that: The clamping member comprises a horizontally arranged support rod (136); a fixed bracket (137) is also fixed on the inner wall of the rotary drilling tool (1); a support shaft (138) is fixed on the fixed bracket (137); two ends of the support rod (136) are rotatably connected to the second push plate (133) and the support shaft (138), respectively; an arc plate (139) is also fixed to one end of the support rod (136) connected to the support shaft (138); an insertion block (1391) is fixed to the other end of the arc plate (139); the insertion block (1391) can be inserted into the clamping groove (1210) to lock the rotary drilling chamber door (12).

3. A highway roadbed pile driver according to claim 2, characterized in that: A clamping plate (121) is vertically fixed above the rotary drilling bin door (12), and the clamping groove (1210) is provided on the clamping plate (121).

4. A highway roadbed pile driver according to claim 3, characterized in that: The lower end surface of the insertion block (1391) is arranged to be inclined, and the upper end surface of the clamping plate (121) is arranged to be inclined in the same direction as the lower end surface of the insertion block (1391).

5. A highway roadbed pile driver according to claim 2, characterized in that: A receiving hole (1390) for accommodating the movement of the camber plate (139) is provided on the side wall of the rotary drilling tool (1).

6. A highway roadbed pile driver according to claim 1, characterized in that: The rotary digging bin door (12) is provided with a soil inlet (122), and a rotary digging tooth (123) is fixed at the soil inlet (122).

7. A highway roadbed pile driver according to claim 1, characterized in that: The push rod (131) passes through the top of the rotary drilling tool (1) and is driven by a cylinder.

8. A highway roadbed pile driver according to claim 1, characterized in that: A blocking plate (14) is also fixed inside the rotary drilling tool (1), and the blocking plate (14) isolates the opening and closing mechanism from the soil extraction bin (11).

9. A highway roadbed pile driver according to claim 1, characterized in that: The elastic member (135) is a spring, and its two ends are respectively fixed on the pushing plate 1 (132) and the fixing plate (134).

10. A highway roadbed pile driver according to claim 1, characterized in that: The push plate 1 (132) is slidably connected to the inner wall of the rotary drilling tool (1) via a guide slide assembly, wherein the guide slide assembly comprises a slide rail (15) and a slide block (16).

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