Jacking iron for large-diameter pipe jacking tunneling construction

Abstract

The utility model discloses jacking iron for large-diameter pipe-jacking tunneling construction, belongs to the technical field of tunnel construction, and solves the problem that the pipe tunneling operation is affected due to the fact that the joint of the pipe-jacking jacking iron and pipe-jacking jacks of different specifications is loosened because the conventional pipe-jacking jacking iron cannot adapt to the pipe-jacking jacks of different models. The telescopic jacking iron comprises a jacking iron head, a rear pressure-bearing seat and a telescopic adjusting part; the jacking pipe connecting assembly comprises a jacking pipe fixing part and a connecting driving part, and the connecting driving part is used for synchronously adjusting the position of the jacking pipe fixing part; according to the embodiment of the utility model, the jacking pipe connecting assembly is arranged, the jacking pipe connecting assembly comprises the jacking pipe fixing part and the connecting driving part, and the position of the jacking pipe fixing part can be flexibly and synchronously adjusted by the connecting driving part, so that not only can the jacking pipe main jacking equipment of different specifications be adapted, but also the stable connection between the jacking pipe main jacking equipment and the telescopic jacking iron can be ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of tunnel construction, and in particular relates to a jacking iron for large-diameter jacking pipe excavation construction. Background Art

[0002] In the construction of large-section tunnels, pipe jacking machines are used more and more. Compared with traditional circular pipe jacking machines, pipe jacking machines can effectively utilize space, reduce underground excavation earthwork, save time and reduce costs. When the pipe jacking machine is excavating, a jacking iron can generally be used as a force transmission device between the pipe jacking jack and the reinforced concrete pipe.

[0003] Chinese patent CN216583969U discloses a pipe jacking iron, which includes an arc-shaped front plate and an arc-shaped rear plate, which are parallel and spaced apart, and a supporting frame is connected between the front plate and the rear plate. However, the existing pipe jacking iron cannot adapt to different types of pipe jacking jacks, so that the joint between the pipe jacking iron and the pipe jacking jacks of different specifications becomes loose, affecting the excavation of the pipeline. Based on this, we propose a pipe jacking iron for large-diameter pipe jacking construction. Summary of the invention

[0004] The utility model aims to solve the problems of the existing technology, that is, the existing jacking iron for pipe jacking construction cannot adapt to different types of jacking jacks, so that the joints between the jacking iron and the jacking jacks of different specifications become loose, thus affecting the pipeline excavation operation.

[0005] The existing top iron of the jacking pipe cannot adapt to different types of jacking jacks, so that the joint between the top iron of the jacking pipe and the jacking jacks of different specifications becomes loose, which affects the excavation of the pipeline. Based on this, we propose a top iron for large-diameter jacking pipe excavation construction. In short, the top iron for large-diameter jacking pipe excavation construction includes a retractable top iron and a jacking pipe connection assembly. The retractable top iron includes a top iron head, a rear pressure-bearing seat and a telescopic adjustment part, and the jacking pipe connection assembly includes at least one group of movable jacking pipe fixing parts and a connecting drive part connected to the jacking pipe fixing part. During operation, the top iron head is fixedly connected to one end of the concrete pipe to be pushed, and then the connecting drive part is opened according to the ejection end position of the main jacking device of the jacking pipe. The connecting drive part drives multiple groups of the connecting drive parts to adjust synchronously, and then the connecting drive part is fixedly connected to the ejection end of the main jacking device of the jacking pipe. After the fixing is completed, the main jacking device of the jacking pipe is opened, and the main jacking device of the jacking pipe drives the retractable top iron to move, thereby realizing the advancement of the concrete pipe. The embodiment of the utility model is provided with a jacking pipe connection assembly, which includes a jacking pipe fixing portion and a connecting drive portion. The position of the jacking pipe fixing portion can be flexibly and synchronously adjusted by the connecting drive portion, which can not only adapt to jacking main jacking equipment of different specifications, but also ensure a stable connection between the jacking main jacking equipment and the retractable jacking iron.

[0006] The utility model is realized by a top iron for large-diameter jacking pipe excavation construction, wherein the top iron for large-diameter jacking pipe excavation construction comprises:

[0007] A telescopic top iron, the telescopic top iron comprising a top iron head, a rear pressure bearing seat and a telescopic adjustment part, the top iron head and the rear pressure bearing seat are connected via the telescopic adjustment part, the telescopic adjustment part is used to adjust the distance between the top iron head and the rear pressure bearing seat, and a pressure bearing groove is provided on the rear pressure bearing seat;

[0008] A jacking pipe connection assembly, which is arranged on the rear pressure bearing seat and is used to connect the rear pressure bearing seat and main jacking equipment of jacking pipes of different specifications;

[0009] Wherein, the jacking pipe connection assembly comprises:

[0010] At least one set of movable top pipe fixing parts;

[0011] A connecting driving part connected to the top pipe fixing part, wherein the connecting driving part is arranged on the rear pressure bearing seat and is used for synchronously adjusting the position of the top pipe fixing part.

[0012] Preferably, the telescopic adjustment part comprises:

[0013] Telescopic adjustment member;

[0014] An adjusting screw fixedly connected to the telescopic adjusting member, the adjusting screw being rotatably mounted on the rear pressure bearing seat;

[0015] An adjusting sleeve sleeved on the adjusting screw, wherein one end of the adjusting sleeve away from the adjusting screw is fixedly connected to the top iron head, and the adjusting sleeve is connected to the adjusting screw by a threaded connection;

[0016] At least one set of guide limit parts, wherein the guide limit parts are arranged between the top iron head and the rear pressure-bearing seat, and the guide limit parts are used to support the top iron head and the rear pressure-bearing seat.

[0017] Preferably, the guide limiting portion comprises:

[0018] A guide limiting cylinder, wherein the guide limiting cylinder is fixedly mounted on the rear pressure bearing seat;

[0019] A telescopic guide rod is slidably connected to the guide limit tube, and the telescopic guide rod is fixedly mounted on the top iron head.

[0020] Preferably, the guide limiting portion further includes:

[0021] At least one set of guide limit grooves, wherein the guide limit grooves are arranged in the guide limit cylinder;

[0022] A guide limiting member detachably connected to the guide limiting groove.

[0023] Preferably, the connection driving unit comprises:

[0024] Connect the drive wheels;

[0025] A connecting drive sleeve fixedly connected to the connecting drive wheel, wherein the connecting drive sleeve is rotatably mounted on a driving support seat, and the driving support seat is fixedly mounted on a rear pressure-bearing seat;

[0026] A connecting movable seat is sleeved on the connecting driving sleeve, and the connecting movable seat is slidably connected with the driving supporting seat.

[0027] Preferably, the connection driving unit further includes:

[0028] At least one set of driving push rods, one end of which is hinged to the connecting movable seat, and the other end of which is hinged to a jacking pipe fixing portion.

[0029] Preferably, the top pipe fixing portion comprises:

[0030] Jacking pipe fixing seat;

[0031] A fixed connection seat fixedly connected to the top pipe fixing seat, wherein the side wall of the fixed connection seat is hinged to the driving push rod;

[0032] An equipment protection seat is arranged in the jacking pipe connection seat, and the equipment protection seat is used to protect the main jacking equipment of the jacking pipe.

[0033] Preferably, the top pipe fixing portion further includes:

[0034] A pressure-bearing guide seat is arranged in the pressure-bearing groove, and the fixed connecting seat is slidably installed in the pressure-bearing guide seat;

[0035] A pressure-bearing spring is installed in the pressure-bearing guide seat, and the pressure-bearing spring is fixedly connected to the fixed connection seat.

[0036] Preferably, it also includes an auxiliary supporting part for auxiliary supporting the concrete pipe, the auxiliary supporting part is arranged in a supporting groove, and the supporting groove is opened in the top iron head.

[0037] Preferably, the auxiliary supporting portion comprises:

[0038] At least one set of auxiliary support seats, wherein the auxiliary support seats are used to support the concrete pipe;

[0039] a supporting slide fixedly connected to the auxiliary supporting seat, the supporting slide being installed in the supporting groove, and

[0040] The invention discloses a pipeline protection part for protecting a concrete pipeline. The pipeline protection part comprises a sliding arc seat and a sliding arc rod. A plurality of groups of embedded springs fixedly connected to the sliding arc rod are arranged in the sliding arc seat.

[0041] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0042] The embodiment of the utility model is provided with a jacking pipe connection assembly, which includes a jacking pipe fixing portion and a connecting drive portion. The position of the jacking pipe fixing portion can be flexibly and synchronously adjusted by the connecting drive portion, which can not only adapt to jacking main jacking equipment of different specifications, but also ensure a stable connection between the jacking main jacking equipment and the retractable jacking iron.

[0043] In this embodiment, a telescopic adjustment part is provided, and the setting of the telescopic adjustment part can meet the requirements of different excavation depths of the jacking pipe, and the distance between the jacking iron head and the rear pressure bearing seat is easy to adjust, which further expands the scope of use of this embodiment.

[0044] The embodiment of the utility model is provided with an auxiliary supporting part, and the setting of the auxiliary supporting part realizes the support and limitation of the concrete pipe to be pushed, avoids the falling off and deviation of the concrete pipe during the pushing process, and ensures the smooth progress of the pushing work. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 The utility model is a schematic structural diagram of a jacking iron for large-diameter jacking pipe excavation construction.

[0046] Figure 2 The utility model is an axonometric diagram of a jacking iron for large-diameter jacking pipe excavation construction.

[0047] Figure 3 It is a front view of a jacking iron for large-diameter jacking pipe excavation construction provided by the utility model.

[0048] Figure 4 The utility model is a top view of a jacking iron for large-diameter jacking pipe excavation construction.

[0049] Figure 5 It is a structural schematic diagram of a jacking pipe connection assembly provided by the utility model.

[0050] Figure 6 It is an axonometric diagram of the jacking pipe connection assembly provided by the utility model.

[0051] Figure 7 It is a side view of the jacking pipe connection assembly provided by the utility model.

[0052] Figure 8 It is a structural schematic diagram of the auxiliary supporting part provided by the utility model.

[0053] Fig. 9It is a front view of the auxiliary supporting part provided by the utility model.

[0054] In the figure: 1-retractable top iron, 11-rear pressure-bearing seat, 111-pressure-bearing groove, 112-pressure-bearing guide seat, 113-pressure-bearing spring, 12-top iron head, 121-supporting groove, 122-stop block, 13-telescopic adjustment part, 131-telescopic adjustment member, 132-adjusting screw, 133-adjusting sleeve, 134-telescopic guide rod, 135-guide limit cylinder, 136-guide limit member, 137-guide limit groove, 2-top pipe connection assembly, 21-connection drive Part, 211-driving support seat, 212-connecting driving wheel, 213-connecting driving sleeve, 214-connecting moving seat, 215-driving push rod, 216-fixed connecting seat, 22-top pipe fixing part, 221-top pipe fixing seat, 222-equipment protection seat, 223-fastening clamping rod, 3-auxiliary supporting part, 31-supporting sliding seat, 32-auxiliary supporting seat, 33-pipe protection part, 331-sliding arc rod, 332-sliding arc seat, 333-embedded spring. DETAILED DESCRIPTION

[0055] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0056] The existing jacking iron of the jacking pipe cannot adapt to different types of jacking jacks, so that the fitting between the jacking iron and the jacking jacks of different specifications becomes loose, affecting the pipeline excavation operation. Based on this, we proposed a jacking iron for large-diameter jacking pipe excavation construction. In short, the jacking iron for large-diameter jacking pipe excavation construction includes a retractable jacking iron 1 and a jacking pipe connecting assembly 2, the retractable jacking iron 1 includes a jacking iron head 12, a rear pressure-bearing seat 11 and a telescopic adjusting part 13, and the jacking pipe connecting assembly 2 includes at least one group of movable jacking pipe fixing parts 22 and a connecting driving part 21 connected to the jacking pipe fixing parts 22. During operation, the jacking iron head 12 is fixedly connected to one end of the concrete pipe to be pushed, and then the connection drive part 21 is opened according to the position of the ejection end of the main jacking device of the jacking pipe, and the connection drive part 21 drives multiple groups of the connection drive parts 21 to adjust synchronously, and then the connection drive part 21 is fixedly connected to the ejection end of the main jacking device of the jacking pipe. After the fixing is completed, the main jacking device of the jacking pipe is opened, and the main jacking device of the jacking pipe drives the retractable jacking iron 1 to move, thereby realizing the advancement of the concrete pipe. The embodiment of the utility model is provided with a jacking pipe connection assembly 2, and the jacking pipe connection assembly 2 includes a jacking pipe fixing part 22 and a connection drive part 21. The position of the jacking pipe fixing part 22 can be flexibly and synchronously adjusted by the connection drive part 21, which can not only adapt to jacking pipe main jacking devices of different specifications, but also ensure the stable connection between the jacking pipe main jacking device and the retractable jacking iron 1.

[0057] The utility model embodiment provides a jacking iron for large diameter pipe jacking construction, such as Figure 1-Figure 4 As shown, the jacking iron for large-diameter jacking pipe excavation construction includes:

[0058] A telescopic top iron 1, the telescopic top iron 1 comprises a top iron head 12, a rear pressure bearing seat 11 and a telescopic adjustment portion 13, the top iron head 12 and the rear pressure bearing seat 11 are connected via the telescopic adjustment portion 13, the telescopic adjustment portion 13 is used to adjust the distance between the top iron head 12 and the rear pressure bearing seat 11, and a pressure bearing groove 111 is provided on the rear pressure bearing seat 11;

[0059] The jacking pipe connection assembly 2 is arranged on the rear pressure-bearing seat 11, and the jacking pipe connection assembly 2 is used to connect the rear pressure-bearing seat 11 and jacking main jacking equipment of different specifications.

[0060] It should be noted that the jacking iron head 12 and the rear pressure-bearing seat 11 described in this embodiment can be made of high-strength steel, the jacking iron head 12 can be a "U"-shaped or "O"-shaped seat structure, and the main jacking equipment of the jacking pipe in this embodiment can be a hydraulic cylinder or a pneumatic cylinder. The concrete pipe and the main jacking equipment of the jacking pipe are all existing technical means / equipment, which will not be elaborated here.

[0061] In this embodiment, a telescopic adjustment part 13 is provided, and the setting of the telescopic adjustment part 13 can meet the requirements of different excavation depths of the jacking pipe, and the distance between the jacking iron head 12 and the rear pressure bearing seat 11 is easy to adjust, further expanding the scope of use of this embodiment.

[0062] Among them, Figure 5-Figure 7 As shown, the jacking pipe connection assembly 2 includes:

[0063] At least one set of movable top pipe fixing parts 22;

[0064] The connecting driving part 21 connected to the jacking pipe fixing part 22 is disposed on the rear pressure bearing seat 11 , and is used for synchronously adjusting the position of the jacking pipe fixing part 22 .

[0065] In this embodiment, during operation, the jacking iron head 12 is fixedly connected to one end of the concrete pipe to be pushed, and then the connecting driving part 21 is opened according to the position of the ejection end of the main jacking device of the jacking pipe, and the connecting driving part 21 drives multiple groups of the connecting driving parts 21 to adjust synchronously, and then the connecting driving part 21 is fixedly connected to the ejection end of the main jacking device of the jacking pipe. After the fixing is completed, the main jacking device of the jacking pipe is opened, and the main jacking device of the jacking pipe drives the retractable jacking iron 1 to move, thereby realizing the advancement of the concrete pipe.

[0066] The embodiment of the utility model is provided with a jacking pipe connection assembly 2, which includes a jacking pipe fixing portion 22 and a connecting drive portion 21. The position of the jacking pipe fixing portion 22 can be flexibly and synchronously adjusted by the connecting drive portion 21, which can not only adapt to jacking main jacking equipment of different specifications, but also ensure a stable connection between the jacking main jacking equipment and the retractable jacking iron 1.

[0067] In a further preferred embodiment of the present invention, Figure 1-Figure 2 As shown, the telescopic adjustment part 13 includes:

[0068] Telescopic adjustment member 131;

[0069] An adjusting screw 132 fixedly connected to the telescopic adjusting member 131, wherein the adjusting screw 132 is rotatably mounted on the rear pressure bearing seat 11;

[0070] An adjusting sleeve 133 sleeved on the adjusting screw 132, wherein one end of the adjusting sleeve 133 away from the adjusting screw 132 is fixedly connected to the top iron head 12, and the adjusting sleeve 133 and the adjusting screw 132 are connected by threads;

[0071] At least one set of guide limit parts, wherein the guide limit parts are arranged between the top iron head 12 and the rear pressure-bearing seat 11 , and the guide limit parts are used to support the top iron head 12 and the rear pressure-bearing seat 11 .

[0072] It should be noted that the telescopic adjustment member 131 can be a rotating circular wheel, and the outer wall of the telescopic adjustment member 131 is provided with multiple sets of anti-slip grooves, one side wall of the telescopic adjustment member 131 is coaxially connected to the end of the adjusting screw 132, and the adjusting screw 132 is rotatably connected to the rear pressure seat 11 through a bearing sleeve, and the adjusting sleeve 133 can specifically be an internal threaded cylinder.

[0073] During advancement, when it is necessary to adjust the distance between the top iron head 12 and the rear pressure-bearing seat 11, the telescopic adjustment member 131 is rotated manually or with the help of a wrench or a sleeve, and the telescopic adjustment member 131 drives the adjusting screw 132 to rotate, so that the adjusting screw 132 drives the adjusting sleeve 133 and the top iron head 12 to move, thereby realizing the adjustment of the distance between the top iron head 12 and the rear pressure-bearing seat 11.

[0074] In this embodiment, the guide limiting portion includes:

[0075] A guide limiting cylinder 135, wherein the guide limiting cylinder 135 is fixedly mounted on the rear pressure bearing seat 11;

[0076] A telescopic guide rod 134 is slidably connected to the guide limit tube 135 , and the telescopic guide rod 134 is fixedly mounted on the top iron head 12 .

[0077] At least one set of guide limiting grooves 137, wherein the guide limiting grooves 137 are provided in the guide limiting cylinder 135;

[0078] A guide limiting member 136 detachably connected to the guide limiting groove 137 .

[0079] In this embodiment, the guide limit cylinder 135 can be a circular cylinder or a square cylinder with a hollow interior, and the guide limit cylinder 135 is circumferentially installed on the rear pressure-bearing seat 11. The circumferential arrangement can ensure that the rear pressure-bearing seat 11 is subjected to uniform force, and the guide limit cylinder 135 and the rear pressure-bearing seat 11 can be fixedly connected by mortise and tenon joints or fastening bolts, and the telescopic guide rod 134 can be a round rod or a square rod, and the end of the telescopic guide rod 134 can be fixedly connected to the top iron head 12 by mortise and tenon joints or riveting.

[0080] It should be noted that the guide limit groove 137 is circumferentially arranged in the guide limit cylinder 135, and the guide limit groove 137 can be a threaded groove or a card groove, and the guide limit member 136 can be a screw or a card pin, and the guide limit member 136 cooperates with the guide limit groove 137 to fix the position of the guide limit cylinder 135 and the telescopic guide rod 134.

[0081] In a further preferred embodiment of the present invention, Figure 5-Figure 7 As shown, the connection driving unit 21 includes:

[0082] Connecting drive wheel 212;

[0083] A connecting drive sleeve 213 fixedly connected to the connecting drive wheel 212, wherein the connecting drive sleeve 213 is rotatably mounted on the driving support seat 211, and the driving support seat 211 is fixedly mounted on the rear pressure seat 11;

[0084] A connecting movable seat 214 is sleeved on the connecting driving sleeve 213 , and the connecting movable seat 214 is slidably connected to the driving supporting seat 211 .

[0085] At least one set of driving push rods 215 , one end of each driving push rod 215 is hinged to the connecting movable seat 214 , and the other end of each driving push rod 215 is hinged to the top pipe fixing portion 22 .

[0086] In this embodiment, the driving support seat 211 is fixedly connected to the rear pressure-bearing seat 11 by fastening bolts or rivets. At the same time, the connecting driving wheel 212 is fixedly connected to the connecting driving sleeve 213 by mortise and tenon joints or fastening bolts. The connecting driving sleeve 213 and the connecting movable seat 214 are connected by threads. The connecting driving sleeve 213 is provided with an external thread on the outside, and the inner wall of the connecting movable seat 214 is provided with an internal thread matching the external thread. The driving push rod 215 is arranged at an angle, and the number of the driving push rod 215 is consistent with the pressure-bearing groove 111.

[0087] In this embodiment, the top pipe fixing portion 22 includes:

[0088] The jacking pipe fixing seat 221 can be provided in three, four or six groups, and the jacking pipe fixing seat 221 is suitable for clamping and fixing the telescopic end of the main jacking equipment of the jacking pipe such as a cylinder or a hydraulic cylinder. The jacking pipe fixing seat 221 can be a round seat with a hollow interior, and a plurality of groups of fastening and clamping rods 223 are arranged circumferentially on the side wall of the jacking pipe fixing seat 221. The fastening and clamping rods 223 and the jacking pipe fixing seat 221 can be connected by threads. When fixing the telescopic end, the fastening and clamping rods 223 are rotated so that the fastening and clamping rods 223 move relative to the jacking pipe fixing seat 221, thereby realizing the clamping and fixing of telescopic ends of different specifications and models.

[0089] The fixed connection seat 216 is fixedly connected to the top pipe fixing seat 221, and the side wall of the fixed connection seat 216 is hinged to the driving push rod 215. The fixed connection seat 216 can be a rectangular seat, a round seat or a "T"-shaped seat.

[0090] An equipment protection seat 222 is arranged in the jacking pipe connection seat, and the equipment protection seat 222 is used to protect the main jacking equipment of the jacking pipe.

[0091] It should be noted that the equipment protection seat 222 can be made of an elastomeric material, and the provision of the equipment protection seat 222 achieves shock-absorbing protection for the main jacking equipment of the jacking pipe.

[0092] A pressure-bearing guide seat 112 is disposed in the pressure-bearing groove 111, and the fixed connection seat 216 is slidably installed in the pressure-bearing guide seat 112;

[0093] The pressure-bearing spring 113 is installed in the pressure-bearing guide seat 112 , and the pressure-bearing spring 113 is fixedly connected to the fixed connection seat 216 .

[0094] The pressure-bearing guide seat 112 may be a rectangular seat with a polished inner wall, and the pressure-bearing guide seat 112 is fixed in the pressure-bearing groove 111 by welding or riveting.

[0095] Considering that the concrete pipe is easy to fall off or deviate during the advancement process, the utility model further provides an auxiliary supporting part 3 for auxiliary supporting the concrete pipe in a preferred embodiment. Figure 8-Figure 9 As shown, the auxiliary supporting portion 3 is disposed in a supporting groove 121 , and the supporting groove 121 is opened in the top iron head 12 .

[0096] The embodiment of the utility model is provided with an auxiliary supporting part 3, and the setting of the auxiliary supporting part 3 realizes the support and limitation of the concrete pipe to be pushed, avoids the falling off and deviation of the concrete pipe during the pushing process, and ensures the smooth progress of the pushing work.

[0097] In this embodiment, the auxiliary supporting portion 3 includes:

[0098] At least one set of auxiliary support seats 32, wherein the auxiliary support seats 32 are used to support the concrete pipe;

[0099] a supporting slide 31 fixedly connected to the auxiliary supporting seat 32, wherein the supporting slide 31 is installed in the supporting groove 121, and

[0100] The pipe protection part 33 is used to protect the concrete pipe. The pipe protection part 33 includes a sliding arc seat 332 and a sliding arc rod 331. The sliding arc seat 332 is provided with multiple groups of embedded springs 333 fixedly connected to the sliding arc rod 331. The sliding arc seat 332 is fixed in the supporting groove 121 by fastening bolts.

[0101] In this embodiment, the number of the supporting grooves 121 can be two groups, and the supporting grooves 121 are symmetrically opened on the top iron head 12, and the supporting slide 31 is slidably connected to the supporting grooves 121, and the supporting slide 31 is fixedly connected to the auxiliary supporting seat 32 by mortise and tenon or riveting, and a stop block 122 is fixedly installed on the top iron head 12. The setting of the stop block 122 realizes the limitation of the supporting slide 31, and the ends of the sliding arc seat 332 and the sliding arc rod 331 that are away from each other are fixedly connected with a group of supporting slides 31 by fastening bolts, and the sliding arc seat 332 and the sliding arc rod 331 are slidably connected.

[0102] When connecting the concrete pipe and the top iron head 12, they can be fixedly connected by a clamping seat, fastening bolts and connecting flanges, and then the multiple groups of auxiliary supporting seats 32 on the top iron head 12 contact the inner wall of the concrete pipe. Under the action of the concrete pipe, the supporting slide 31 and the auxiliary supporting seat 32 fixedly connected to the sliding arc rod 331 slide along the supporting groove 121 toward the stop block 122. During the sliding, the restoring force of the embedded spring 333 reacts on the sliding arc rod 331, so that the supporting slide 31 and the auxiliary supporting seat 32 fixedly connected to the sliding arc rod 331 squeeze the side wall of the concrete pipe, thereby achieving the limitation and support of the concrete pipe, and at the same time, the connection between the concrete pipe and the top iron head 12 can be buffered and protected.

[0103] In summary, the utility model provides a jacking iron for large-diameter jacking construction. During operation, the jacking iron head 12 is fixedly connected to one end of the concrete pipe to be pushed, and then the connecting drive part 21 is opened according to the position of the ejection end of the main jacking device of the jacking pipe. The connecting drive part 21 drives multiple groups of the connecting drive parts 21 to adjust synchronously, and then the connecting drive part 21 is fixedly connected to the ejection end of the main jacking device of the jacking pipe. After fixing, the main jacking device of the jacking pipe is opened, and the main jacking device of the jacking pipe drives the retractable jacking iron 1 to move, thereby realizing the advancement of the concrete pipe.

[0104] The embodiment of the utility model is provided with a jacking pipe connection assembly 2, which includes a jacking pipe fixing portion 22 and a connecting drive portion 21. The position of the jacking pipe fixing portion 22 can be flexibly and synchronously adjusted by the connecting drive portion 21, which can not only adapt to jacking main jacking equipment of different specifications, but also ensure a stable connection between the jacking main jacking equipment and the retractable jacking iron 1.

[0105] It should be pointed out that the large-diameter jacking pipe referred to in the present utility model refers to a jacking pipe with a diameter of more than 2 meters.

[0106] It should be noted that, for the above-mentioned embodiments, for the sake of simplicity, they are all described as a series of action combinations, but those skilled in the art should know that the utility model is not limited by the described action sequence, because according to the utility model, some steps may be performed in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the utility model.

[0107] The above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit the protection scope of the utility model. Obviously, the described embodiments are only some embodiments of the utility model, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. Although the utility model has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the utility model according to the circumstances without conflict, without making creative work, so as to obtain different other technical solutions that do not deviate from the concept of the utility model in essence, and these technical solutions also belong to the scope of protection of the utility model.

Claims

1. A jacking iron for large-diameter jacking pipe excavation construction, the jacking iron for large-diameter jacking pipe excavation construction comprising: A telescopic top iron (1), characterized in that the telescopic top iron (1) comprises a top iron head (12), a rear pressure-bearing seat (11) and a telescopic adjustment portion (13); the top iron head (12) and the rear pressure-bearing seat (11) are connected via the telescopic adjustment portion (13); the telescopic adjustment portion (13) is used to adjust the distance between the top iron head (12) and the rear pressure-bearing seat (11); and a pressure-bearing groove (111) is provided on the rear pressure-bearing seat (11); A jacking pipe connection assembly (2), the jacking pipe connection assembly (2) being arranged on the rear pressure bearing seat (11), and the jacking pipe connection assembly (2) being used to connect the rear pressure bearing seat (11) and main jacking pipe equipment of different specifications; Wherein, the jacking pipe connection assembly (2) comprises: At least one set of movable top pipe fixing parts (22); A connecting drive part (21) connected to the top pipe fixing part (22), wherein the connecting drive part (21) is arranged on the rear pressure bearing seat (11), and the connecting drive part (21) is used to synchronously adjust the position of the top pipe fixing part (22).

2. The jacking iron for large-diameter jacking pipe excavation construction as claimed in claim 1, characterized in that: The telescopic adjustment part (13) comprises: Telescopic adjustment member (131); an adjusting screw (132) fixedly connected to the telescopic adjusting member (131), wherein the adjusting screw (132) is rotatably mounted on the rear pressure bearing seat (11); an adjusting sleeve (133) sleeved on the adjusting screw (132), wherein one end of the adjusting sleeve (133) away from the adjusting screw (132) is fixedly connected to the top iron head (12), and the adjusting sleeve (133) and the adjusting screw (132) are connected via threads; At least one set of guide limit parts, wherein the guide limit parts are arranged between the top iron head (12) and the rear pressure-bearing seat (11), and the guide limit parts are used to support the top iron head (12) and the rear pressure-bearing seat (11).

3. The jacking iron for large-diameter jacking pipe excavation construction as claimed in claim 2, characterized in that: The guide limiting portion comprises: A guide limiting cylinder (135), wherein the guide limiting cylinder (135) is fixedly mounted on the rear pressure bearing seat (11); A telescopic guide rod (134) is slidably connected to the guide limit tube (135), and the telescopic guide rod (134) is fixedly mounted on the top iron head (12).

4. The jacking iron for large-diameter jacking pipe excavation construction as claimed in claim 3, characterized in that: The guide limiting portion further includes: At least one set of guide limiting grooves (137), wherein the guide limiting grooves (137) are arranged in the guide limiting cylinder (135); A guide limiting member (136) detachably connected to the guide limiting groove (137).

5. The jacking iron for large-diameter pipe jacking construction as described in any one of claims 2 to 4, characterized in that: The connecting driving unit (21) comprises: Connecting a drive wheel (212); A connecting drive sleeve (213) fixedly connected to the connecting drive wheel (212), wherein the connecting drive sleeve (213) is rotatably mounted on a driving support seat (211), and the driving support seat (211) is fixedly mounted on a rear pressure-bearing seat (11); A connecting movable seat (214) is sleeved on the connecting driving sleeve (213), and the connecting movable seat (214) is slidably connected to the driving supporting seat (211).

6. The jacking iron for large-diameter jacking construction as claimed in claim 5, characterized in that: The connecting driving unit (21) further comprises: At least one group of driving push rods (215), one end of the driving push rods (215) is hinged to the connecting movable seat (214), and the other end is hinged to the top pipe fixing part (22).

7. The jacking iron for large-diameter jacking pipe excavation construction as claimed in claim 6, characterized in that: The top pipe fixing part (22) comprises: Top pipe fixing seat (221); a fixed connection seat (216) fixedly connected to the top pipe fixing seat (221), wherein a side wall of the fixed connection seat (216) is hingedly connected to the driving push rod (215); An equipment protection seat (222) is arranged in the jacking pipe connection seat, and the equipment protection seat (222) is used to protect the main jacking equipment of the jacking pipe.

8. The jacking iron for large-diameter jacking pipe excavation construction as claimed in claim 7, characterized in that: The top pipe fixing portion (22) further comprises: A pressure-bearing guide seat (112) is arranged in the pressure-bearing groove (111), and the fixed connection seat (216) is slidably installed in the pressure-bearing guide seat (112); A pressure-bearing spring (113) is installed in the pressure-bearing guide seat (112), and the pressure-bearing spring (113) is fixedly connected to the fixed connection seat (216).

9. The jacking iron for large-diameter pipe jacking construction as claimed in any one of claims 2 to 4, characterized in that: It also includes an auxiliary supporting part (3) for auxiliary supporting the concrete pipe, wherein the auxiliary supporting part (3) is arranged in a supporting groove (121), and the supporting groove (121) is opened in the top iron head (12).

10. The jacking iron for large-diameter jacking pipe excavation construction as claimed in claim 9, characterized in that: The auxiliary supporting part (3) comprises: At least one set of auxiliary support seats (32), wherein the auxiliary support seats (32) are used to support the concrete pipe; a supporting slide (31) fixedly connected to the auxiliary supporting seat (32), the supporting slide (31) being installed in the supporting groove (121), and A pipe protection part (33) for protecting a concrete pipe, the pipe protection part (33) comprising a sliding arc seat (332) and a sliding arc rod (331), wherein the sliding arc seat (332) is provided with a plurality of groups of embedded springs (333) fixedly connected to the sliding arc rod (331).

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