Propelling device for tunnel advanced small guide pipe

Abstract

The utility model relates to the technical field of tunnel construction, in particular to a propelling device for a tunnel advanced small guide pipe. The device comprises a base and a supporting rod fixedly connected to the base, a guide groove is hinged to the supporting rod, a propelling device used for propelling the advanced small guide pipe is arranged on the guide groove, and an adjusting device used for adjusting the installation angle of the advanced small guide pipe is arranged on the guide groove. The supporting plate is provided with a locking assembly used for locking the advanced small guide pipe. According to the device, in the advancing process of the advanced small guide pipe, the advanced small guide pipe is limited and positioned, and collision between the advanced small guide pipe and the hole wall of the mounting hole is avoided; the rotating angle of the guide groove is roughly adjusted and then finely adjusted, so that the direction of the guide groove is correspondingly consistent with the direction of the mounting hole.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction, and specifically relates to a propulsion device for an advanced small duct in a tunnel. Background Technique

[0002] The advanced small duct is a very effective auxiliary construction method for stabilizing the excavation face. In the construction of soft and fractured rock strata, the advanced small duct plays a role in strengthening the loose rock strata. After grouting, the stability of the loose and soft surrounding rock is enhanced, which is beneficial to the stability of the surrounding rock during the time from excavation to the completion of the initial support, and prevents the surrounding rock from losing stability and collapsing until it fails.

[0003] However, there are still some deficiencies in the current jacking device. For example, the limiting and stabilizing effect of the existing jacking device is poor, resulting in the installation position of the small duct being prone to deviation when the jacking device jacks and installs the advanced small duct. That is, it is easy for the small duct to be damaged when moving into the drill hole (i.e., there is wear between the end of the small duct and the stones inside the tunnel), and it is also easy to interfere with the subsequent grouting operation of the staff, and thus there are certain defects in use.

[0004] Chinese Patent CN202322481631.7 discloses "A Tunnel Duct Jacking Device", with the publication number CN220980489U. The device includes universal wheels and damping bearings. The top of the universal wheels is provided with a bearing base, and the top of the bearing base is fixedly connected with an outer shell, and the side of the outer shell is rotatably connected with an adjustment knob. However, this device has some defects: the device sets a driving motor on the bearing base to drive the fixed bracket to achieve the purpose of jacking the duct. However, using a driving motor requires adding a mobile power source or connecting wires, which increases the production cost and operation steps, and cannot be used in the absence of power, bringing inconvenience to the construction. Content of the Utility Model

[0005] In order to solve the problems of the above-mentioned prior art, the utility model provides a propulsion device for an advanced small duct in a tunnel, which can position the advanced small duct during the installation of the advanced small duct and avoid the advanced small duct from colliding with the hole wall.

[0006] To achieve the above object, the utility model provides the following technical solutions: A propulsion device for an advanced small duct in a tunnel, comprising a base, a support rod fixedly connected to the base, a guiding groove hinged on the support rod, a propulsion device arranged on the guiding groove for propelling the advanced small duct, and an adjusting device arranged on the guiding groove for adjusting the installation angle of the advanced small duct; The propulsion device includes a support plate slidably connected in the guiding groove, a sliding rod fixedly connected to the support plate, a traction rope fixedly connected to the head end of the sliding rod, a turning rod arranged at the upper end of the guiding groove, and a winding rod rotatably connected to the lower end of the guiding groove. A slideway matching the sliding rod is opened on the groove wall of the guiding groove. The traction rope bypasses the turning rod, and the tail end of the traction rope is fixedly connected to the winding rod; A locking assembly for locking the advanced small duct is arranged on the support plate.

[0007] With the above structural design, the direction of the guiding groove is adjusted to be consistent with the direction of the installation hole of the advanced small duct. The lower end of the advanced small duct is placed on the support plate. By rotating the winding rod, the advanced small duct will be propelled into the installation hole. Through the limitation of the guiding groove, the advanced small duct will not shift during the propulsion process, avoiding collision between the advanced small duct and the hole wall. Moreover, this device does not require motor drive during use, reducing production costs, with a simple structure and convenient operation.

[0008] Preferably, the locking assembly includes a lower clamping plate fixedly connected to the support plate, a first screw rod fixedly connected to the lower clamping plate, and an upper clamping plate sleeved on the first screw rod. The lower clamping plate slides on the support plate.

[0009] With the above structural design, the upper clamping plate and the lower clamping plate clamp the advanced small duct, preventing the advanced small duct from shifting or shaking during the propulsion process.

[0010] Preferably, the adjusting device includes a slider slidably connected to the base, a lead screw passing through the slider, a support seat sleeved on the lead screw, and a telescopic rod hinged to the lower end of the slider. The upper end of the telescopic rod is hinged to the guiding groove.

[0011] With the above structural design, by extending or contracting the telescopic rod, the guiding groove is rotated, thereby roughly adjusting the rotation angle of the guiding groove. When the lead screw rotates, the slider moves, driving the telescopic rod to move, and further rotating the guiding groove to finely adjust the rotation angle of the guiding groove to make it consistent with the direction of the installation hole.

[0012] Preferably, the telescopic rod includes a first sleeve rod hinged to the guiding groove, a second sleeve rod sleeved on the first sleeve rod, and a positioning pin passing through the second sleeve rod. A positioning hole matching the positioning pin is opened on the first sleeve rod. The second sleeve rod is hinged to the slider.

[0013] With the above structural design, the telescopic rod is extended or contracted to rotate the guide groove, thereby roughly adjusting the rotation angle of the guide groove; the structure is simple and easy to operate.

[0014] Preferably, a locking plate is arranged above the guide groove. A second screw rod is inserted through the locking plate, and the second screw rod is fixedly connected to the guide groove. Roller columns are rotatably connected to both the locking plate and the guide groove.

[0015] With the above structural design, the locking plate is used in cooperation with the locking assembly to lock the front small conduit at two positions, further locking the front small conduit and preventing it from shaking during the pushing process.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0017] 1) During the pushing process of the front small conduit, this device limits and positions it to prevent the front small conduit from colliding with the hole wall of the installation hole.

[0018] 2) This device is applicable to front small conduits with different pipe diameters within a certain range.

[0019] 3) This device first roughly adjusts the rotation angle of the guide groove and then finely adjusts it to make the direction of the guide groove correspond to the direction of the installation hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of the present utility model;

[0021] Figure 2 is the present utility model Figure 1 an enlarged schematic structural diagram of part A in;

[0022] Figure 3 is the present utility model Figure 1 an enlarged schematic structural diagram of part B in; DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] Please refer to Figure 1 、 Figure 2 、 Figure 3, the present utility model provides a technical solution: a propulsion device for an advanced small conduit in a tunnel, including a base 1, a support rod 2 fixedly connected to the base 1, a guide groove 3 hinged on the support rod 2, a propulsion device for advancing the advanced small conduit arranged on the guide groove 3, and an adjusting device for adjusting the installation angle of the advanced small conduit arranged on the guide groove 3; the propulsion device includes a support plate 41 slidably connected in the groove of the guide groove 3, a sliding rod 42 fixedly connected to the support plate 41, a traction rope 44 fixedly connected to the head end of the sliding rod 42, a turning rod 45 arranged at the upper end of the guide groove 3, and a winding rod 43 rotatably connected to the lower end of the guide groove 3. A slideway matching the sliding rod 42 is opened on the groove wall of the guide groove 3. The traction rope 44 bypasses the turning rod 45, and the tail end of the traction rope 44 is fixedly connected to the winding rod 43; a locking assembly for locking the advanced small conduit is arranged on the support plate 41.

[0024] In this embodiment, a roller 47 is rotatably connected to the sliding rod 42, and the surface of the slideway is configured to match the shape of the roller 47, so as to reduce the friction force when the sliding rod 42 slides, and enable the support plate 41 to slide smoothly. A handwheel is fixedly connected to the winding rod 43 for rotating the winding rod 43.

[0025] The locking assembly includes a lower clamping plate 51 fixedly connected to the support plate 41, a first screw rod 52 fixedly connected to the lower clamping plate 51, and an upper clamping plate 53 sleeved on the first screw rod 52. The lower clamping plate 51 slides on the support plate 41. Both the lower clamping plate 51 and the upper clamping plate 53 are arc-shaped plates to adapt to the shape of the advanced small conduit. A moving wheel 48 is rotatably connected to the lower surface of the lower clamping plate 51. Four moving wheels 48 are arranged on the lower surface of the lower clamping plate 51 in a rectangular arrangement. When the traction rope 44 pulls the support plate, the lower clamping plate 51 can slide smoothly on the bottom of the guide groove 3.

[0026] The adjusting device includes a slider 61 slidably connected to the base 1, a lead screw 62 passing through the slider 61, a support seat 63 sleeved on the lead screw 62, and a telescopic rod 64 whose lower end is hinged to the slider 61. The upper end of the telescopic rod 64 is hinged to the guide groove 3. The telescopic rod 64 includes a first sleeve rod 641 hinged to the guide groove 3, a second sleeve rod 642 sleeved on the first sleeve rod 641, and a positioning pin 643 passing through the second sleeve rod 642. A positioning hole matching the positioning pin 643 is opened on the first sleeve rod 641. The second sleeve rod 642 is hinged to the slider 61. During use, the staff first stretches or contracts the telescopic rod 64 to roughly adjust the angle of the guide groove, and then the staff rotates the lead screw 62 to finely adjust the angle of the guide groove, so that the advanced small conduit in the guide groove 3 is finally aligned with the direction of the installation hole.

[0027] Above the guiding groove 3, a locking plate 8 is provided. A second screw rod 81 passes through the locking plate 8, and the second screw rod is fixedly connected to the guiding groove 3. Roller 82 is rotatably connected to both the locking plate 8 and the guiding groove 3.

[0028] When the device is in use, the staff first installs the advanced small duct onto the device, places the lower end of the advanced small duct on the support plate, so that the lower clamping plate 51 and the upper clamping plate 53 clamp the lower end of the advanced small duct, then installs the nut on the first screw rod 52 for fastening, and then passes the locking plate 8 through the second screw rod 81 to clamp the upper end of the advanced small duct; Next, the staff elongates or shortens the telescopic rod 64 to roughly align the advanced small duct with the installation hole, and then the staff rotates the lead screw 62 to move the telescopic rod 64 until the advanced small duct is aligned with the installation hole; Next, the staff rotates the hand wheel, thereby driving the winding rod 43 to wind the traction rope 44. The traction rope 44 drives the advanced small duct on the support plate 41 to move until the advanced small duct enters the installation hole. The staff uses anchoring agent to fix the advanced small duct, and then the staff removes the device.

[0029] The structures, ratios, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention. Therefore, they do not have technical essential significance. Any modification of the structure, change of the proportional relationship, or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope that can be covered by the technical content disclosed in the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle", and "one" cited in this specification are only for the convenience of clear narration, and are not used to limit the scope of implementation of the present invention. The change or adjustment of their relative relationships, without substantial change in the technical content, should also be regarded as the scope of implementation of the present invention.

[0030] The above describes the present invention with reference to the preferred embodiments, but the protection scope of the present invention is not limited thereto. All technical solutions falling within the scope of the claims are within the protection scope of the present invention. Without departing from the scope of the present invention, various improvements can be made to it and components therein can be replaced with equivalents. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way.

Claims

1. A propulsion device for an advanced small duct in a tunnel, comprising a base (1) and a support rod (2) fixedly connected to the base (1), characterized in that: A guiding groove (3) is hinged on the support rod (2). A propulsion device for advancing the advanced small duct is arranged on the guiding groove (3), and an adjusting device for adjusting the installation angle of the advanced small duct is arranged on the guiding groove (3); the propulsion device includes a support plate (41) slidably connected in the groove of the guiding groove (3), a slide rod (42) fixedly connected to the support plate (41), a traction rope (44) with its head end fixedly connected to the slide rod (42), a turning rod (45) arranged at the upper end of the guiding groove (3), and a winding rod (43) rotatably connected to the lower end of the guiding groove (3). A slideway matching the slide rod (42) is formed on the groove wall of the guiding groove (3). The traction rope (44) bypasses the turning rod (45), and the tail end of the traction rope (44) is fixedly connected to the winding rod (43); a locking assembly for locking the advanced small duct is arranged on the support plate (41).

2. The propulsion device for the advanced small conduit in a tunnel according to claim 1, characterized in that: The locking assembly includes a lower clamping plate (51) fixedly connected to the support plate (41), a first screw rod (52) fixedly connected to the lower clamping plate (51), and an upper clamping plate (53) sleeved on the first screw rod (52). The lower clamping plate (51) slides on the support plate (41).

3. The advancing device for the tunnel advanced small catheter according to claim 1, characterized in that: The adjusting device includes a slider (61) slidably connected to the base (1), a lead screw (62) passing through the slider (61), a support seat (63) sleeved on the lead screw (62), and a telescopic rod (64) with its lower end hinged to the slider (61). The upper end of the telescopic rod (64) is hinged to the guiding groove (3).

4. The advancing device for the tunnel advanced small duct according to claim 3, wherein: The telescopic rod (64) includes a first sleeve rod (641) hinged to the guiding groove (3), a second sleeve rod (642) sleeved on the first sleeve rod (641), and a positioning pin (643) passing through the second sleeve rod (642). A positioning hole matching the positioning pin (643) is formed on the first sleeve rod (641). The second sleeve rod (642) is hinged to the slider (61).

5. The propulsion device for the advanced small duct in the tunnel according to claim 1, wherein: A locking plate (8) is arranged above the guiding groove (3). A second screw rod (81) passes through the locking plate (8), and the second screw rod is fixedly connected to the guiding groove (3). Roller (82) is rotatably connected to both the locking plate (8) and the guiding groove (3).

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