Partitioning structure for 36-indexing segment shield tunneling machine thrust oil cylinder
By introducing a reinforced structure into the partition structure of the 36-index tube sheet shield machine, the T-shaped connection and sealing ring design of the combined plate and the semicircular cavity are used to solve the problems of cylinder deformation and short life, and more stable is achieved The engagement and protection effect extend the service life.
Patent Information
- Application Number
- CN202421050511.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-15
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-05-15
AI Technical Summary
The existing partition structure used for the propulsion cylinder of the 36-index tube-piece shield machine lacks protection for the cylinder, resulting in the cylinder being easily deformed during long-term use and has a short life.
Design a partition structure including a central shield, an oil cylinder propulsion structure and a reinforcement structure. The central shield is equipped with a first combined plate and a second combined plate. The semicircular cavity forms a T-shaped circular cavity through butt, and the sealing ring is carried out at the ring opening. Sealed to provide reinforcement and protection to the cylinder body.
It effectively avoids deformation of the cylinder body during the long-term use of the shield machine, extends the service life of the cylinder, and provides better protection performance, including dust protection and dust removal effects.
Smart Images
Figure CN222276663U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of shield machines, in particular to a partition structure for a propulsion cylinder of a 36-division segment shield machine. Background Art
[0002] A shield machine is a tunnel boring machine that uses the shield method. The shield construction method is that the tunnel boring machine builds (lays) the "shield" (referring to the supporting segments) of the tunnel while excavating. It is different from the open construction method. The shield body of the shield machine mainly includes three parts: the front shield, the middle shield and the tail shield. The front shield is provided with a cutterhead for crushing soil and rocks. Behind the front shield is the middle shield. The middle shield is the partition structure of the propulsion cylinder of the 36-divided segment shield machine. The middle shield and the front shield are connected by bolts through flanges. Several propulsion cylinders are installed on the frame inside the middle shield. The propulsion cylinders are pushed on the installed segments to provide the shield machine with forward excavation force. The commonly used 36° divided segment shield machine propulsion system consists of 16 propulsion cylinders, and the 16 propulsion cylinders are evenly divided into 4 groups. Each group is adjusted by a separate pressure to facilitate the up, down, left and right adjustment of the shield machine.
[0003] The cylinders in the existing partitioned structure of the propulsion cylinders of 36-division segment shield machines are usually directly installed and used. Since the cylinders serve as the power components of the front shield, when the cylinders are pushed onto the installed segments to provide tunneling force for the front shields, the cylinders as a whole will be subjected to a large reverse force. Therefore, during long-term use, the cylinders are prone to slight deformation, resulting in a shorter lifespan. In view of this, we propose a partitioned structure for the propulsion cylinders of 36-division segment shield machines. Utility Model Content
[0004] The purpose of the utility model is to overcome the deficiencies of the prior art, meet actual needs, and provide a partition structure for the propulsion cylinder of a 36-division segment shield machine to solve the technical problem that the current partition structure for the propulsion cylinder of a 36-division segment shield machine lacks protection for the cylinder.
[0005] In order to achieve the purpose of the utility model, the technical solution adopted by the utility model is: designing a partition structure for the propulsion cylinder of a 36-division segment shield machine, including a middle shield, sixteen groups of cylinder propulsion structures are arranged equidistantly around the inside of the middle shield, a reinforcement structure corresponding to the cylinder propulsion structure is arranged around the middle shield, the reinforcement structure is coated on the cylinder propulsion structure, the reinforcement structure includes a first combination plate and a second combination plate, the second combination plate is arranged on the inner wall of the middle shield, the first combination plate is opposite to the second combination plate and is fixedly connected, and symmetrical semicircular cavities are arranged on opposite sides of the first combination plate and the second combination plate;
[0006] The semicircular cavity is composed of two groups of semicircular through holes of different diameters, and the semicircular cavity on the first combined plate and the semicircular cavity on the second combined plate are connected to form a T-shaped circular cavity with a T-shaped cross-section. A circle opening is arranged at each end of the T-shaped circular cavity, and the circle opening is composed of two semicircular openings, and sealing rings are arranged in the circle openings at both ends.
[0007] Preferably, the middle shield is divided into four partitions: up, down, left, and right, and each of the four partitions includes four groups of continuous cylinder propulsion structures.
[0008] Preferably, the oil cylinder propulsion structure comprises a mounting plate, the mounting plate is fixedly arranged inside the middle shield, two groups of symmetrical oil cylinder bodies are arranged on the mounting plate, and push plates are arranged at the piston ends of the two groups of oil cylinder bodies.
[0009] Preferably, two symmetrical T-shaped circular cavities are arranged between the first combination plate and the second combination plate, and the two cylinder bodies are respectively installed in the two T-shaped circular cavities, and the diameter of one group of semicircular through holes in the semicircular cavity matches the diameter of the cylinder body of the cylinder body, and the diameter of another group of semicircular through holes in the semicircular cavity matches the diameter of the piston rod of the cylinder body.
[0010] Preferably, the sealing ring has a T-shaped cross section, and the large edge of the sealing ring is sleeved in the ring opening, and the small edge of the sealing ring is sleeved on the T-shaped circular cavity.
[0011] Preferably, the first combined plate is provided with docking grooves at the top and bottom facing the second combined plate, and the second combined plate is provided with docking protrusions symmetrically arranged with the docking grooves at the side facing the first combined plate.
[0012] Compared with the prior art, the beneficial effects of the present invention are:
[0013] 1. The utility model sets a reinforcement structure at the position corresponding to the cylinder propulsion structure inside the middle shield. After the first combined plate and the second combined plate in the reinforcement structure are connected, the semicircular cavity inside the two can directly wrap and tighten the cylinder body in the cylinder propulsion structure, so as to reinforce the cylinder body and improve the overall bearing capacity of the cylinder body. Therefore, it can effectively avoid the deformation of the cylinder body during the long-term use of the shield machine, thereby greatly extending the service life of the cylinder body. Therefore, the utility model has the advantage of long service life.
[0014] 2. The semicircular cavity of the first combined plate and the second combined plate of the utility model is formed by two groups of semicircular through holes of different diameters, and the diameter of one group of semicircular through holes matches the cylinder diameter of the oil cylinder body, and the diameter of the other group of semicircular through holes matches the piston rod diameter of the oil cylinder body. Therefore, the semicircular cavity of the first combined plate and the second combined plate can be more firmly engaged with the oil cylinder body through the two groups of semicircular through holes, and the protective performance of the oil cylinder body is better. In addition, the semicircular cavity on the first combined plate and the semicircular cavity on the second combined plate are connected to form a cross-section. The T-shaped circular cavity has a T-shaped surface, and a circle opening is arranged at both ends of the T-shaped circular cavity. Therefore, when the two groups of combined semicircular cavities on the first combined plate and the second combined plate are engaged on the cylinder body, the sealing rings at both ends of the two groups of combined semicircular cavities can directly seal the ports of the combined semicircular cavities, which can prevent dust from the cylinder body. When the piston rod of the cylinder body is contracted, the sealing rings at the front ends of the two groups of combined semicircular cavities can directly remove dust on the piston rod, thereby making the reinforcement structure have a better protective effect on the cylinder body. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0016] Figure 2 This is a schematic diagram of the middle shield structure of the utility model;
[0017] Figure 3 This is a schematic diagram of the oil cylinder propulsion structure of the utility model;
[0018] Figure 4 It is a cross-sectional schematic diagram of the reinforcement structure of the utility model;
[0019] Figure 5 It is an explosion schematic diagram of the reinforcement structure of the utility model;
[0020] Figure 6 It is a schematic diagram of the enlarged structure of point A of the utility model;
[0021] Figure 7 It is a schematic diagram of the enlarged structure of point B of the utility model.
[0022] In the figure: 1, middle shield; 2, oil cylinder propulsion structure; 201, mounting plate; 202, oil cylinder body; 203, push plate; 3, reinforcement structure; 4, first combination plate; 401, docking groove; 5, second combination plate; 501, docking protrusion; 6, semicircular cavity; 7, ring mouth; 8, sealing ring. DETAILED DESCRIPTION
[0023] The utility model is further described below in conjunction with the accompanying drawings and embodiments:
[0024] Example: A partition structure for the propulsion cylinder of a 36-division segment shield machine, see Figures 1 to 7 , including a middle shield 1, sixteen groups of oil cylinder propulsion structures 2 are evenly arranged around the inside of the middle shield 1, a reinforcement structure 3 corresponding to the oil cylinder propulsion structure 2 is arranged around the middle shield 1, the reinforcement structure 3 is covered on the oil cylinder propulsion structure 2, the reinforcement structure 3 includes a first combination plate 4 and a second combination plate 5, the second combination plate 5 is arranged on the inner wall of the middle shield 1, the first combination plate 4 and the second combination plate 5 are opposite to each other and fixed by bolts, and symmetrical semicircular cavities 6 are arranged on opposite sides of the first combination plate 4 and the second combination plate 5.
[0025] Specifically, the middle shield 1 is divided into four partitions, namely, up, down, left and right, and each of the four partitions contains four groups of continuous cylinder propulsion structures 2. Each of the four partitions is individually pressure-adjusted by the four groups of continuous cylinder propulsion structures 2 to facilitate the up, down, left and right adjustment of the shield machine.
[0026] Furthermore, the cylinder propulsion structure 2 includes a mounting plate 201, which is fixedly arranged inside the middle shield 1. Two groups of symmetrical cylinder bodies 202 are arranged on the mounting plate 201, and the piston ends of the two groups of cylinder bodies 202 are arranged with push plates 203. The piston ends of the cylinder bodies 202 are pushed against the installed segments through the push plates 203, providing forward excavation force for the shield machine.
[0027] In this embodiment, the sixteen groups of cylinder propulsion structures 2 in the middle shield 1 are pushed onto the installed segments to provide the shield machine with forward excavation force. After the first combination plate 4 and the second combination plate 5 in the reinforcement structure 3 in the middle shield 1 are connected, the semicircular cavity 6 inside the two can directly wrap and tighten the cylinder body 202 in the cylinder propulsion structure 2, so that the cylinder body 202 can be reinforced and the overall bearing capacity of the cylinder body 202 can be improved. Therefore, the deformation of the cylinder body 202 during the long-term use of the shield machine can be effectively avoided, thereby greatly extending the service life of the cylinder body 202.
[0028] Furthermore, the first combination plate 4 is provided with docking grooves 401 at the top and bottom of one side of the second combination plate 5, and the second combination plate 5 is provided with docking protrusions 501 symmetrically arranged with the docking grooves 401 on one side of the first combination plate 4. When the first combination plate 4 and the second combination plate 5 are docked and installed, the docking grooves 401 on the first combination plate 4 and the docking protrusions 501 on the second combination plate 5 can be stably docked, so that the first combination plate 4 and the second combination plate 5 can be easily aligned and installed.
[0029] In a specific embodiment, the semicircular cavity 6 is formed by connecting two groups of semicircular through holes of different diameters, and the semicircular cavity 6 on the first combination plate 4 and the semicircular cavity 6 on the second combination plate 5 are connected to form a T-shaped circular cavity with a T-shaped cross section, and a circle 7 is arranged at both ends of the T-shaped circular cavity, and the circle 7 is composed of two semicircular openings, one of which is arranged in the semicircular cavity 6 on the first combination plate 4 and close to its end, and the other semicircular opening is arranged in the semicircular cavity 6 on the second combination plate 5 and close to its end, and sealing rings 8 are arranged in the circle 7 at both ends; in this embodiment, two symmetrical T-shaped circular cavities are arranged between the first combination plate 4 and the second combination plate 5, and the two oil cylinder bodies 202 are respectively installed in the two T-shaped circular cavities, and the diameter of a group of semicircular through holes in the semicircular cavity 6 is the same as that of the oil cylinder body 202. The diameter of the body matches, and the diameter of another group of semicircular through holes in the semicircular cavity 6 matches the diameter of the piston rod of the cylinder body 202. The semicircular cavity 6 of the first combined plate 4 and the second combined plate 5 can be more firmly engaged with the cylinder body 202 through the two groups of semicircular through holes, and the protection performance of the cylinder body 202 is better. Moreover, when the two groups of combined semicircular cavities 6 on the first combined plate 4 and the second combined plate 5 are engaged with the cylinder body 202, the sealing rings 8 at both ends of the two groups of combined semicircular cavities 6 can directly seal the ports of the combined semicircular cavities 6, which can have a dust-proof effect on the cylinder body 202. When the piston rod of the cylinder body 202 is contracted, the sealing rings 8 at the front ends of the two groups of combined semicircular cavities 6 can directly remove dust on the piston rod, thereby making the reinforcement structure 3 have a better protection effect on the cylinder body 202.
[0030] Furthermore, the cross-section of the sealing ring 8 is T-shaped, and the large circle edge of the sealing ring 8 is sleeved in the ring opening 7, and the small circle edge of the sealing ring 8 is sleeved on the T-shaped circular cavity, which can ensure the stability of the sealing ring 8 installed in the two groups of combined ring openings 7 and is not easy to fall off; the utility model solves the technical problem that the current partition structure used for the propulsion cylinder of the 36-divided pipe segment shield machine lacks protection for the cylinder through the reinforcement structure 3.
[0031] Working principle: When the device is used, firstly, the sixteen groups of cylinder propulsion structures 2 in the middle shield 1 are pushed onto the installed segments to provide the shield machine with forward excavation force, and the four partitions in the middle shield 1 are individually pressure-adjusted by four groups of continuous cylinder propulsion structures 2 to facilitate the shield machine to adjust up, down, left and right; secondly, after the first combination plate 4 and the second combination plate 5 in the reinforcement structure 3 in the middle shield 1 are docked, the semicircular cavity 6 inside the two can directly wrap and tighten the cylinder body 202 in the cylinder propulsion structure 2, thereby reinforcing the cylinder body 202 and improving the overall bearing capacity of the cylinder body 202. Therefore, the deformation of the cylinder body 202 during the long-term use of the shield machine can be effectively avoided, thereby greatly delaying the operation of the shield machine. The service life of the oil cylinder body 202 is prolonged; finally, the semicircular cavity 6 of the first combined plate 4 and the second combined plate 5 can be more firmly engaged with the oil cylinder body 202 through two groups of semicircular through holes, and the protection performance of the oil cylinder body 202 is better, and when the two groups of combined semicircular cavities 6 on the first combined plate 4 and the second combined plate 5 are engaged with the oil cylinder body 202, the sealing rings 8 at both ends of the two groups of combined semicircular cavities 6 can directly seal the ports of the combined semicircular cavities 6, which can have a dust-proof effect on the oil cylinder body 202, and when the piston rod of the oil cylinder body 202 is contracted, the sealing rings 8 at the front ends of the two groups of combined semicircular cavities 6 can directly remove the dust on the piston rod, thereby making the reinforcement structure 3 have a better protection effect on the oil cylinder body 202.
[0032] The embodiments of the present invention disclose preferred embodiments, but are not limited thereto. A person skilled in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not deviate from the spirit of the present invention, they are all within the protection scope of the present invention.
Claims
1. A partition structure for a propulsion cylinder of a 36-division segment shield machine, characterized in that: The invention comprises a middle shield (1), wherein sixteen groups of oil cylinder propulsion structures (2) are arranged equidistantly around the middle shield (1), wherein a reinforcement structure (3) corresponding to the oil cylinder propulsion structure (2) is arranged around the middle shield (1), wherein the reinforcement structure (3) covers the oil cylinder propulsion structure (2), wherein the reinforcement structure (3) comprises a first combination plate (4) and a second combination plate (5), wherein the second combination plate (5) is arranged on the inner wall of the middle shield (1), wherein the first combination plate (4) and the second combination plate (5) are opposite to each other and fixedly connected, and symmetrical semicircular cavities (6) are arranged on opposite sides of the first combination plate (4) and the second combination plate (5); The semicircular cavity (6) is composed of two groups of semicircular through holes of different diameters, and the semicircular cavity (6) on the first combined plate (4) and the semicircular cavity (6) on the second combined plate (5) are butt-jointed to form a T-shaped circular cavity with a T-shaped cross section, and a ring opening (7) is arranged at each end of the T-shaped circular cavity, the ring opening (7) being composed of two semicircular openings, and sealing rings (8) are arranged in the ring openings (7) at both ends.
2. A partition structure for a propulsion cylinder of a 36-division segment shield machine as claimed in claim 1, characterized in that: The middle shield (1) is divided into four partitions: upper, lower, left and right, and each of the four partitions contains four groups of continuous oil cylinder propulsion structures (2).
3. A partition structure for a propulsion cylinder of a 36-division segment shield machine according to claim 1, characterized in that: The oil cylinder propulsion structure (2) comprises a mounting plate (201), the mounting plate (201) being fixedly arranged inside the middle shield (1), two groups of symmetrical oil cylinder bodies (202) being arranged on the mounting plate (201), and push plates (203) being arranged at the piston ends of the two groups of oil cylinder bodies (202).
4. A partition structure for a propulsion cylinder of a 36-division segment shield machine as claimed in claim 3, characterized in that: Two symmetrical T-shaped circular cavities are arranged between the first combined plate (4) and the second combined plate (5), and the two oil cylinder bodies (202) are respectively installed in the two T-shaped circular cavities, and the diameter of one group of semicircular through holes in the semicircular cavity (6) matches the cylinder body diameter of the oil cylinder body (202), and the diameter of another group of semicircular through holes in the semicircular cavity (6) matches the piston rod diameter of the oil cylinder body (202).
5. The partition structure for the propulsion cylinder of a 36-division segment shield machine according to claim 1, characterized in that: The sealing ring (8) has a T-shaped cross section, and the large edge of the sealing ring (8) is sleeved in the ring opening (7), while the small edge of the sealing ring (8) is sleeved on the T-shaped circular cavity.
6. A partition structure for a propulsion cylinder of a 36-division segment shield machine as claimed in claim 1, characterized in that: The first combined plate (4) is provided with docking grooves (401) at the top and bottom of a side facing the second combined plate (5), and the second combined plate (5) is provided with docking protrusions (501) symmetrically arranged with the docking grooves (401) at a side facing the first combined plate (4).