Assembling type pipe-jacking abandoned shell recycling device

Abstract

The utility model relates to an assembly type pipe-jacking abandoned shell recovery device which comprises a supporting pipe and a pull rod, the supporting pipe penetrates through the well wall of a receiving well, a pipe joint extends into the supporting pipe, a clamping groove is formed in the inner wall of the supporting pipe, during pipe-jacking construction, a cushion block is placed at the rear end of the pipe joint placed in the receiving well, and a protrusion matched with the clamping groove is arranged on the cushion block in the circumferential direction. The utility model has the beneficial effects that the supporting pipe is sleeved on the machine head and part of the pipe joint, so that the supporting effect is achieved after the machine head is dismounted, and collapse is prevented; meanwhile, the clamping groove is formed in the inner wall of the supporting pipe, an acting point is provided for pulling-out construction of the supporting pipe after the machine head is dismantled, the supporting pipe can be pulled out and dismantled at the same time through the jack, the device can be completely recycled, waste of steel is reduced, and cost is greatly saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of pipe jacking construction, especially including a kind of assembled pipe jacking shell recovery device. BACKGROUND

[0002] With the growth of the demand for underground space development and the limitation of existing urban space, there are cases where receiving wells cannot be set up to receive equipment during pipe jacking construction, especially in urban downtown areas with existing underground buildings, and even when the pipe jacking machine can only enter the receiving well obliquely, due to the influence of surrounding buildings, there is not enough space to accommodate the pipe jacking machine, making the hole entry work extremely difficult.

[0003] In the prior art, the method of shell receiving is often used to solve the problem of limited receiving space. This method disassembles the internal facilities of the pipe jacking machine and transports them to the launching well for hoisting out, while the shell of the pipe jacking machine remains in the soil, thus requiring a construction process for recovering the pipe jacking machine shell.

[0004] Therefore, there is an urgent need for an assembled pipe jacking shell recovery device to overcome the above problems. SUMMARY

[0005] The utility model aims to overcome the shortcomings of the prior art and provide an assembled pipe jacking shell recovery device.

[0006] This assembled pipe jacking shell recovery device includes a support pipe and a pull rod. The support pipe penetrates the well wall of the receiving well, and the pipe joint extends into the support pipe. A clamping groove is formed on the inner wall of the support pipe. During pipe jacking construction, a pad is placed at the rear end of the pipe joint placed in the receiving well, and the pad is provided with a protrusion that matches the clamping groove.

[0007] The pull rod is L-shaped, with one end inserted into the clamping groove and the other end connected to a jack. The jack is fixed in the receiving well through a counterforce frame and is used to pull the support pipe into the receiving well.

[0008] As a preferred embodiment, during pipe jacking construction, the pad is placed between the last pipe joint and the head of the pipe jacking machine, and the support pipe is sleeved on the head and part of the pipe joint.

[0009] As a preferred embodiment, the support pipe is assembled from support pipe assembly pieces. The front and rear sections of the support pipe assembly piece are provided with tenons and mortises, respectively. The tenons and mortises of adjacent support pipe assembly pieces are inserted and connected through bolts.

[0010] As a preferred embodiment, a clamping groove is formed in the middle of the inner wall of each support pipe assembly piece.

[0011] As a preferred embodiment, the support pipe extends into the receiving well by a certain length, and the clamping groove is formed within the length range of the extension into the receiving well.

[0012] The utility model discloses a beneficial effect is:

[0013] 1) the utility model sets up the support pipe on the machine head and partial pipe section, prevents the collapse after the machine head dismantling and plays the supporting effect, simultaneously, sets up the clamping groove on the inner wall of support pipe, provides the force point for the support pipe of machine head dismantled construction to pull out, can pull out and dismantle through the jack, can recycle the device completely, reduces the waste of steel material, saves the cost greatly.

[0014] 2) the utility model can install gradually, can dismantle the support pipe assembly piece in section when pulling out the support pipe, and is not limited to the space size in the receiving well, and is convenient for application in various conditions construction.

[0015] 3) the utility model sets up the cushion block on the pipe section front end, and the cushion block is set up the convex matching with the clamping groove in the ring, makes the pipe section fixed in the clamping groove in the support pipe in the process of constantly pushing forward from the receiving well, and has prevented the effect of the pipe section back in the front. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the whole schematic diagram of the assembly type pipe jacking shell recycling device before the machine head dismantling;

[0017] Figure 2 It is the whole schematic diagram of the assembly type pipe jacking shell recycling device when pulling out;

[0018] Figure 3 It is the assembly type pipe jacking shell recycling device detail view.

[0019] Mark explanation: pipe section 1, cushion block 2, machine head 3, support pipe 4, support pipe assembly piece 5, clamping groove 6, bolt 7, connecting hole 8, pull rod 9, jack 10, counterforce frame 11. DETAILED DESCRIPTION

[0020] The utility model will be further described in connection with examples. The following example is only used to help understanding the utility model. It should be pointed out that for ordinary person in this technical field, on the premise of not departing from the principle of the utility model, the utility model can be modified, and these improvements and modifications also fall within the protection scope of the utility model claims.

[0021] As an embodiment, as Figures 1 to 3 Shown, this assembly type pipe jacking shell recycling device includes support pipe 4 and pull rod 9, and support pipe 4 penetrates the well wall of receiving well, and pipe section 1 is connected in sequence and extends into support pipe 4, and clamping groove 6 is formed on the inner wall of support pipe 4.

[0022] As Figure 1As shown, when the pipe jacking construction is carried out, the end of the pipe section 1 is placed with a cushion block 2, i.e. the cushion block 2 is placed between the end of the pipe section 1 and the machine head 3 of the pipe jacking machine, the cushion block 2 is provided with a protrusion matching the clamping groove 6 in the circumferential direction, and the support pipe 4 is sleeved on the machine head 3 and part of the pipe section 1 to fix the support pipe 4. With the pipe jacking, the cushion block 2 continuously extends into the support pipe 4, temporarily clamps at each clamping groove 6 position, and is not easy to retreat, which provides guarantee for the smooth progress of the pipe jacking.

[0023] As shown in the drawings, Figure 3 The support pipe 4 is assembled by a support pipe assembly piece 5, and the support pipe assembly piece 5 can be made according to the size and shape of the machine head 3. The front and rear sections of the support pipe assembly piece 5 are respectively provided with tenons and mortises, specifically, four side faces are provided with tenons or mortises, and the tenons and mortises are provided with connecting holes 8. The tenons and mortises of adjacent support pipe assembly pieces 5 are inserted and connected, the connecting holes 8 of adjacent support pipe assembly pieces 5 are aligned during splicing, and the bolts 7 pass through the connecting holes 8 of adjacent support pipe assembly pieces 5 to connect the support pipe assembly pieces 5 into a whole to form the support pipe 4. The middle part of the inner wall of each support pipe assembly piece 5 is provided with a clamping groove 6, so that when the support pipe 4 is pulled out, it can be pulled out in sections and then removed, and it is not easy to be affected by the size of the receiving well.

[0024] As shown in the drawings, Figure 2 After the pipe jacking is completed, the tail end of the support pipe 4 extends into the receiving well for a certain length, and the clamping groove 6 is arranged in the length range extending into the receiving well, i.e. at least one section of the support pipe assembly piece 5 extends into the receiving well.

[0025] First, the machine head 3 of the pipe jacking machine is removed, and the support pipe 4 plays a temporary supporting role to prevent collapse. When the support pipe 4 can be removed, a jack 10 and a counterforce frame 11 are arranged in the receiving well, the jack 10 is connected with the pull rod 9, the pull rod 9 is used for recovering the support pipe 4 after the machine head 3 is removed, the pull rod 9 is L-shaped, one end is inserted into the clamping groove 6, and the other end is connected with the jack 10.

[0026] The jack 10 is fixed in the receiving well through the counterforce frame 11, and the counterforce frame 11 provides a counterforce for the jack 10 to pull the support pipe 4 into the receiving well and disassemble it section by section.

Claims

1. An assembled pipe jacking shell recovery device, characterized in that: It includes a support pipe and a pull rod. The support pipe passes through the wall of the receiving well, and the pipe section extends into the support pipe. A clamping groove is provided on the inner wall of the support pipe. When the pipe jacking construction is carried out, a pad is placed at the rear end of the pipe section placed in the receiving well. The pad ring is provided with a protrusion that matches the clamping groove. The pull rod support pipe is recovered. The pull rod is L-shaped, one end is inserted into the slot, and the other end is connected to a jack. The jack is fixed in the receiving well through a reaction frame and is used to pull the support pipe into the receiving well.

2. The assembled pipe jacking waste shell recovery device according to claim 1 is characterized in that: During pipe jacking construction, the pad is placed between the rearmost pipe section and the head of the pipe jacking machine, and the support pipe is sleeved over the head and part of the pipe section.

3. The assembled pipe jacking waste shell recovery device according to claim 1 is characterized in that: The support pipe is assembled from support pipe assemblies. The front and rear sections of the support pipe assemblies are respectively provided with tenons and mortises. The tenons and mortises of adjacent support pipe assemblies are plugged in and connected through bolts.

4. The assembled pipe jacking waste shell recovery device according to claim 3 is characterized in that: A slot is provided in the middle of the inner wall of each support pipe assembly.

5. The assembled pipe jacking waste shell recovery device according to claim 1 is characterized in that: The support pipe extends into the receiving well for a certain length, and a clamping groove is provided within the length range of the support pipe extending into the receiving well.

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