Bidirectional pipe jacking pit supporting structure

Abstract

The utility model discloses a bidirectional pipe jacking pit supporting structure which comprises a protective plate, the protective plate is installed in a foundation pit, an adjusting mechanism is arranged on the protective plate, the adjusting mechanism comprises a supporting frame, an ejector rod, a push rod, a fixing sleeve, an insertion rod, a clamping mechanism, a follow-up sleeve, a follow-up rod, an ejector ring, a limiting spring and a pushing mechanism, the supporting frame is installed in the protective plate, and the push rod is installed in the supporting frame. The push rods are rotationally connected to the supporting frame, the fixing sleeves are installed on the push rods, the protection plates can be flexibly adjusted according to different construction requirements through the design of the adjusting mechanisms, the spiral grooves in the insertion rods can be driven to rotate by rotating the ejector rods, and therefore the push rods on the two sides are in a synchronous telescopic state, and fixing of the protection plates is achieved; by means of the design, the construction flexibility is improved, the operation process is simplified, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of a bidirectional pipe jacking pit support structure, and more specifically, to a bidirectional pipe jacking pit support structure. Background Art

[0002] Among the existing technologies, the bidirectional jacking pit support structure is a technology widely used in underground projects, which allows horizontal or nearly horizontal pipe installation underground without large-scale ground excavation. However, this structure has a technical problem during use: the jacks on both sides can only move synchronously. This problem seriously affects the convenience of the structure, making it difficult to adapt to different situations and needs during use.

[0003] Specifically, the existing two-way jacking pit support structure has certain limitations in design. This structure usually includes two opposing jack rods, which are used to support and stabilize the two sides of the working pit. However, due to design limitations, the two jack rods can only move synchronously, that is, when the jack rod on one side moves, the jack rod on the other side must also move at the same time. This limitation of synchronous movement makes it difficult to adjust the supports on both sides according to actual needs during use, thereby affecting the flexibility and adaptability of the structure. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the problems existing in the prior art, the utility model provides a bidirectional pipe jacking pit support structure to solve the technical problems mentioned in the background technology.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a two-way jacking pipe pit support structure, including a guard plate, which is installed in a foundation pit, and an adjusting mechanism is arranged on the guard plate, and the adjusting mechanism includes a support frame, a push rod, a push rod, a fixed sleeve, an insertion rod, a clamping mechanism, a follower sleeve, a follower rod, a top ring, a limit spring and a pushing mechanism, the support frame is installed in the guard plate, the push rod is rotatably connected to the support frame, the fixed sleeve is installed on the push rod, the insertion rod is cooperatively connected to the fixed sleeve, the push rod is installed on the insertion rod, the clamping mechanism is installed on the fixed sleeve, the follower sleeve is slidably connected to the fixed sleeve, the top ring is installed on the fixed sleeve, one end of the follower rod is installed and connected to the follower sleeve, the other end of the follower rod is connected to the limit spring, the top ring is installed on the fixed sleeve, a positioning hole is opened on the top ring, the limit spring is inserted into the positioning hole, and the pushing mechanism is installed in the fixed sleeve.

[0008] The utility model is further configured that a plurality of limit springs are provided, and a plurality of the limit springs are respectively provided with top balls, and the design of the plurality of limit springs prevents the interference rod from falling.

[0009] The utility model is further configured that a hexagonal sleeve is threadedly provided on the fixed sleeve, a connecting sleeve is coaxially provided on the follower sleeve, the connecting sleeve is rotatably connected in the hexagonal sleeve, and the design of the hexagonal sleeve ensures the sliding of the follower sleeve.

[0010] The utility model is further configured such that the pushing mechanism includes an intermediate rod and a spring, the intermediate rod is coaxially mounted on the insertion rod, the intermediate rod is slidably connected in the fixing sleeve, the spring is sleeved on the intermediate rod, and the design of the pushing mechanism ensures the transmission of the thrust.

[0011] The utility model is further configured that thrust bearings are respectively provided at both ends of the spring, and both ends of the thrust bearings respectively abut against the fixing sleeve and the insertion rod, and the design of the thrust bearings reduces friction.

[0012] The utility model is further configured that the clamping mechanism includes a resistance rod, a plurality of the resistance rods are provided, and the plurality of resistance rods are respectively slidably connected to the side walls of the fixing sleeve, and the design of the clamping mechanism ensures the continuity of the threaded connection.

[0013] The utility model is further configured that a spiral groove is opened on the side wall of the insertion rod, and a plurality of the abutment rods are respectively pressed in the spiral grooves, and the design of the spiral grooves ensures the connection effect.

[0014] The utility model is further configured that a resistance groove is opened on the inner wall of the follower sleeve, and a plurality of resistance rods are respectively pressed against the resistance grooves, and the design of the resistance grooves ensures the limiting position of the resistance rods.

[0015] (III) Beneficial effects

[0016] Compared with the prior art, the utility model provides a two-way pipe jacking pit support structure, which has the following beneficial effects:

[0017] 1. The design of the adjustment mechanism allows the guard plate to be flexibly adjusted according to different construction requirements. By rotating the top rod, the spiral groove on the insertion rod can be driven to rotate, so that the push rods on both sides are in a synchronous telescopic state, thereby achieving the fixation of the guard plate. This design not only improves the flexibility of construction, but also simplifies the operation process and improves work efficiency.

[0018] 2. The clamping mechanism realizes the precise adjustment of the guard plate position through the cooperation of multiple resistance rods and spiral grooves. By rotating the hexagonal sleeve, the follower sleeve can be moved, so that the resistance groove leaves the position of the resistance rod to achieve single-sided adjustment. This design allows the operator to easily adjust the position of the guard plate according to actual needs, thereby improving the adaptability and ease of use of the equipment.

[0019] 3. The pushing mechanism realizes the smooth pushing of the guard plate through the cooperation of the middle rod and the spring. The middle rod is slidably connected in the fixed sleeve, the spring is sleeved on the middle rod, and thrust bearings are respectively provided at both ends, which abut against the fixed sleeve and the insertion rod. This design enables the guard plate to remain stable during the lifting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of a bidirectional jacking pit support structure in the utility model;

[0021] Figure 2 It is a structural schematic diagram of the push rod and the adjustment mechanism in the utility model;

[0022] Figure 3 It is a structural schematic diagram of the adjustment mechanism in the utility model;

[0023] Figure 4 For the utility model Figure 3 A schematic cross-sectional structure diagram of ;

[0024] Figure 5 It is a structural schematic diagram of the follower sleeve in the utility model.

[0025] In the figure: 1. guard plate; 2. support frame; 3. push rod; 4. push rod; 5. fixed sleeve; 6. insertion rod; 7. follower sleeve; 8. follower rod; 9. top ring; 10. limit spring; 11. positioning hole; 12. top ball; 13. hexagonal sleeve; 14. connecting sleeve; 15. intermediate rod; 16. spring; 17. thrust bearing; 18. resistance rod; 19. spiral groove; 20. resistance groove. DETAILED DESCRIPTION

[0026] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0027] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0028] In the present invention, unless otherwise specified, directions such as "up" and "down" are usually used in reference to the directions shown in the drawings, or in reference to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually used in reference to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0029] See also Figure 1-5A two-way jacking pit support structure comprises a guard plate 1, which is installed in a foundation pit. An adjusting mechanism is arranged on the guard plate 1. The adjusting mechanism comprises a support frame 2, a push rod 3, a push rod 4, a fixed sleeve 5, an insertion rod 6, a clamping mechanism, a follower sleeve 7, a follower rod 8, a top ring 9, a limit spring 10 and a pushing mechanism. The support frame 2 is installed in the guard plate 1, the push rod 4 is rotatably connected to the support frame 2, the fixed sleeve 5 is installed on the push rod 4, the insertion rod 6 is cooperatively connected to the fixed sleeve 5, the push rod 3 is installed on the insertion rod 6, the clamping mechanism is installed on the fixed sleeve 5, the follower sleeve 7 is slidably connected to the fixed sleeve 5, the top ring 9 is installed on the fixed sleeve 5, one end of the follower rod 8 is installed and connected to the follower sleeve 7, and the other end of the follower rod 8 is connected to the limit spring 10, the top ring 9 is installed on the fixed sleeve 5, a positioning hole 11 is opened on the top ring 9, and the limit spring 10 is inserted into the positioning hole 11, the pushing mechanism is installed in the fixed sleeve 5, and the limit spring 10 is provided with multiple, and multiple limit springs 10 are respectively provided with top balls 12, a hexagonal sleeve 13 is threaded on the fixed sleeve 5, a connecting sleeve 14 is coaxially provided on the follower sleeve 7, and the connecting sleeve 14 is rotatably connected in the hexagonal sleeve 13, the pushing mechanism includes an intermediate rod 15 and a spring 16, the intermediate rod 15 is coaxially installed on the insertion rod 6, the intermediate rod 15 is slidably connected in the fixed sleeve 5, the spring 16 is sleeved on the intermediate rod 15, and thrust bearings 17 are respectively provided at both ends of the spring 16, and the two ends of the thrust bearing 17 respectively abut on the fixed sleeve 5 and the insertion rod 6, the clamping mechanism includes a resisting rod 18, a plurality of resisting rods 18 are provided, and the plurality of resisting rods 18 are respectively slidably connected to the side wall of the fixed sleeve 5, a spiral groove 19 is opened on the side wall of the insertion rod 6, and the plurality of resisting rods 18 are respectively pressed in the spiral groove 19, and a resisting groove 20 is opened on the inner wall of the follower sleeve 7, and the plurality of resisting rods 18 are respectively pressed on the resisting groove 20.

[0030] In this embodiment, when it is necessary to push the guard plate 1 into the foundation pit, first, by rotating the push rod 3, since the insertion rod 6 is installed on the push rod 3, and since the insertion rods 6 are respectively installed on both sides of the push rod 3, and the two spiral grooves 19 are respectively set in opposite directions, the spiral grooves 19 on the two insertion rods 6 can be driven to rotate respectively by rotating the push rod 3. At this time, the interference groove 20 on the follower sleeve 7 is pressed against the interference rod 18, so the interference rod 18 is in a limited state, and the interference rod 18 thread is in contact with the spiral groove 19, and the spiral grooves 19 on both sides are set with reverse threads, so the push rods 4 on both sides can be in a synchronous telescopic state by rotation, thereby completing the fixing process.

[0031] More specifically, when only the interference rod 18 and the spiral groove 19 in the single-sided fixed sleeve 5 are required to be in a connected state, first, by rotating the hexagonal sleeve 13, since the connecting sleeve 14 is rotatably connected to the hexagonal sleeve 13, the follower sleeve 7 can move accordingly, and then the interference groove 20 leaves the position of the interference rod 18, and then the multiple interference rods 18 are limited by multiple limit springs 10. At this time, the interference rod 18 and the spiral groove 19 are not in a fixed state, so only one side can be adjusted, thereby completing the use process.

[0032] In summary, when the overall equipment is in use or running: when it is necessary to push the guard plate 1 into the foundation pit, first, by rotating the top rod 3, since the insertion rod 6 is installed on the top rod 3, since the insertion rods 6 are respectively installed on both sides of the top rod 3, and the two spiral grooves 19 are respectively set in opposite directions, the spiral grooves 19 on the two insertion rods 6 can be driven to rotate respectively by rotating the top rod 3. At this time, the interference groove 20 on the follower sleeve 7 is pushed against the interference rod 18, so the interference rod 18 is in a limited state, and the interference rod 18 thread is in contact with the spiral groove 19, and the spiral grooves 19 on both sides are set with reverse threads, so the rotation can be So that the push rods 4 on both sides are in a synchronous telescopic state, thereby completing the fixing process. When only the interference rod 18 and the spiral groove 19 in the single-side fixing sleeve 5 are needed to be in a connected state, first, by rotating the hexagonal sleeve 13, since the connecting sleeve 14 is rotatably connected to the hexagonal sleeve 13, the follower sleeve 7 can move accordingly, and then the interference groove 20 leaves the position of the interference rod 18, and then the multiple interference rods 18 are limited by multiple limit springs 10. At this time, the interference rod 18 and the spiral groove 19 are not in a fixed state, so only one side can be adjusted, thereby completing the use process.

[0033] In all the schemes mentioned above, the connection between two parts can be selected according to actual conditions by welding, bolt and nut matching connection, bolt or screw connection or other well-known connection methods, which are not described here one by one. In the above, all fixed connections are preferably welded. Although the embodiments of the utility model have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. A bidirectional pipe jacking pit support structure, comprising a guard plate (1), characterized in that: The guard plate (1) is installed in a foundation pit. The guard plate (1) is provided with an adjustment mechanism, which comprises a support frame (2), a push rod (3), a push rod (4), a fixed sleeve (5), an insertion rod (6), a clamping mechanism, a follower sleeve (7), a follower rod (8), a top ring (9), a limit spring (10) and a pushing mechanism. The support frame (2) is installed in the guard plate (1), the push rod (4) is rotatably connected to the support frame (2), the fixed sleeve (5) is installed on the push rod (4), and the insertion rod (6) is cooperatively connected to the fixed sleeve (5). The fixing sleeve (5) is provided with a push rod (3) and an insertion rod (6). The clamping mechanism is installed on the fixing sleeve (5). The follower sleeve (7) is slidably connected to the fixing sleeve (5). The top ring (9) is installed on the fixing sleeve (5). One end of the follower rod (8) is installed on the follower sleeve (7). The other end of the follower rod (8) is connected to the limit spring (10). A positioning hole (11) is provided on the top ring (9). The limit spring (10) is inserted into the positioning hole (11). The pushing mechanism is installed in the fixing sleeve (5).

2. A bidirectional pipe jacking pit support structure according to claim 1, characterized in that: A plurality of the limit springs (10) are provided, and a top ball (12) is respectively provided on the plurality of limit springs (10).

3. A bidirectional pipe jacking pit support structure according to claim 2, characterized in that: A hexagonal sleeve (13) is threadedly provided on the fixed sleeve (5), and a connecting sleeve (14) is coaxially provided on the follower sleeve (7), and the connecting sleeve (14) is rotatably connected in the hexagonal sleeve (13).

4. A bidirectional pipe jacking pit support structure according to claim 3, characterized in that: The pushing mechanism comprises an intermediate rod (15) and a spring (16); the intermediate rod (15) is coaxially mounted on the insertion rod (6); the intermediate rod (15) is slidably connected in the fixing sleeve (5); and the spring (16) is sleeved on the intermediate rod (15).

5. A bidirectional pipe jacking pit support structure according to claim 4, characterized in that: Thrust bearings (17) are respectively provided at both ends of the spring (16), and both ends of the thrust bearing (17) are respectively in contact with the fixing sleeve (5) and the insertion rod (6).

6. A bidirectional pipe jacking pit support structure according to claim 5, characterized in that: The clamping mechanism comprises a resisting rod (18), a plurality of the resisting rods (18) are provided, and the plurality of the resisting rods (18) are respectively slidably connected to the side walls of the fixing sleeve (5).

7. A bidirectional pipe jacking pit support structure according to claim 6, characterized in that: A spiral groove (19) is provided on the side wall of the insertion rod (6), and a plurality of the abutting rods (18) are respectively pressed into the spiral grooves (19).

8. A bidirectional pipe jacking pit support structure according to claim 7, characterized in that: An abutment groove (20) is provided on the inner wall of the follower sleeve (7), and a plurality of abutment rods (18) are respectively pressed against the abutment grooves (20).

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