Supporting shoe oil cylinder

Abstract

The utility model discloses a supporting shoe oil cylinder which comprises two cylinder barrels, the cylinder barrels are arranged side by side and connected into a whole, piston assemblies are symmetrically arranged in the cylinder barrels, each piston assembly comprises a piston and a piston rod, the piston rods on the same side are connected into a whole, the pistons divide the cylinder barrels into a rod cavity A, a rodless cavity C and a rod cavity B, and the rodless cavity C and the rod cavity B are connected into a whole. The rodless cavity C is located between the two pistons. By means of the mode, under the condition that the supporting force of the supporting shoe is not reduced, the section installation space of the supporting shoe oil cylinder is reduced, and reliable supporting force is provided for a small-diameter TBM tunnel boring machine.

Description

Technical Field

[0001] The utility model relates to the field of oil cylinders, in particular to a support shoe oil cylinder. Background Art

[0002] In TBM tunnel boring equipment, the support shoe cylinder, as a key hydraulic actuator, plays a vital role in the working process. The front end of the support shoe cylinder piston rod is connected to the support shoe, and the support shoe cylinder drives the support shoe to be supported outward against the tunnel wall. The friction between the support shoe and the tunnel wall serves as the support force for the thrust cylinder to move forward. During the forward movement of the thrust cylinder, there are generally multiple thrust cylinders moving forward at the same time, which requires the support shoe cylinder to have sufficient support force to provide reverse thrust. Therefore, in practical applications, the support shoe cylinders are generally larger in specifications. In the design of conventional large-diameter tunnel TBMs, the support shoe cylinders are generally arranged in double layers, consisting of four single-rod cylinders or two double-rod cylinders, such as Figure 4 If the support shoe cylinder is designed according to this structure in a small diameter tunnel TBM, the cylinder diameter needs to be designed to be relatively small. At this time, the thrust provided by the support shoe cylinder is small and cannot provide sufficient support force. Summary of the invention

[0003] The main technical problem solved by the utility model is to provide a support shoe oil cylinder, which reduces the installation space of the support shoe oil cylinder section without reducing the support shoe supporting force, and provides reliable supporting force for a small-diameter TBM tunnel boring machine.

[0004] In order to solve the above technical problems, a technical solution adopted by the utility model is: to provide a shoe support cylinder, including two cylinder barrels, which are arranged side by side and connected as a whole, and piston assemblies are symmetrically arranged in the cylinder barrels. The piston assembly includes a piston and a piston rod, and the piston rods on the same side are connected as a whole. The piston divides the cylinder barrel into a rod chamber A, a rodless chamber C and a rod chamber B, and the rodless chamber C is located between the two pistons.

[0005] In a preferred embodiment of the utility model, oil is introduced into the rodless chamber C to cause all piston rods to extend synchronously, oil is introduced into the rod chamber A and the rod chamber B at the same time to cause all piston rods to retract synchronously, and oil is introduced into the rod chamber A or the rod chamber B alone to cause the piston rod on one side to retract synchronously.

[0006] In a preferred embodiment of the utility model, the cylinder barrel is provided with a rodless chamber oil port C1, a rod chamber oil port A1 and a rod chamber oil port B1. The rodless chamber oil ports C1 are connected in series to form a rodless chamber C oil circuit, and the rod chamber oil ports A1 and the rod chamber oil ports B1 are connected in series to form a rod chamber oil circuit.

[0007] In a preferred embodiment of the present invention, the end of the piston rod extends out of the cylinder barrel, and the side-by-side piston rods are integrally connected via a connecting plate.

[0008] In a preferred embodiment of the present invention, the connecting plate is connected to the piston rod via screws.

[0009] In a preferred embodiment of the utility model, guide sleeves are connected to both ends of the cylinder, and the guide sleeves are movably matched with the piston rod.

[0010] In a preferred embodiment of the present invention, the cylinder barrels are integrally connected via a cylinder connecting plate, and the cylinder barrels are arranged in parallel and aligned.

[0011] The beneficial effect of the utility model is that the support shoe oil cylinder of the utility model arranges the oil cylinder into a double-row parallel structure, which reduces the installation space of the cross-section of the support shoe oil cylinder without reducing the support shoe supporting force, and provides reliable supporting force for a small-diameter TBM tunnel boring machine.

[0012] The utility model supports the shoe oil cylinder, the piston rods on one side are integrally connected, and the piston components are synchronously extended and retracted through the rodless chamber C oil circuit and the rod chamber oil circuit. The supporting force received by each support shoe is the sum of the thrusts of the two cylinders, thereby ensuring sufficient supporting force. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0014] Figure 1 It is a structural schematic diagram of a preferred embodiment of the utility model shoe support cylinder;

[0015] Figure 2 It is a top view of the support shoe cylinder;

[0016] Figure 3 This is a schematic diagram of the use status of the shoe support cylinder;

[0017] Figure 4 It is a schematic diagram of the use status of the existing gripper cylinder;

[0018] The markings of the components in the accompanying drawings are as follows: 1. cylinder barrel, 2. cylinder connecting plate, 3. piston, 4. piston rod, 5. connecting plate, 6. screw, 7. guide sleeve. DETAILED DESCRIPTION

[0019] The technical scheme in the embodiment of the utility model will be described clearly and completely below. The structure, proportion, size, etc. illustrated in the drawings of this specification are only used to match the content disclosed in the specification, so that people familiar with this technology can understand and read, and are not used to limit the limiting conditions that can be implemented in the utility model, so they have no technical substantive significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effect that can be produced by the utility model and the purpose that can be achieved, should still fall within the scope of the technical content disclosed in the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and so on quoted in this specification are only for the convenience of narration, and are not used to limit the scope that can be implemented. The change or adjustment of its relative relationship should also be regarded as the scope that can be implemented in the utility model without substantially changing the technical content.

[0020] See also Figures 1 to 3 A shoe gripper cylinder includes two cylinder barrels 1, which are arranged side by side and connected as a whole. The cylinder barrels 1 are connected as a whole through a cylinder body connecting plate 2, and the cylinder barrels 1 are arranged parallel and aligned. The shoe gripper cylinder is designed as a single-layer double-row structure, which can reduce the installation space of the shoe gripper cylinder section.

[0021] The piston assembly is symmetrically arranged in the cylinder 1, and the piston assembly includes a piston 3 and a piston rod 4. Two pistons 3 and two piston rods 4 are arranged in each cylinder 1. There are four pistons 3 and four piston rods 4 in total in the two cylinders 1. The piston 3 and the piston rod 4 in the same cylinder 1 are coaxially arranged.

[0022] The end of the piston rod 4 extends out of the cylinder 1, and the side-by-side piston rods 4 are connected as a whole through a connecting plate 5. The piston rods 4 on the same side are connected as a whole. The connecting plate 5 is connected to the piston rod 4 through a screw 6. The piston rods 4 are connected as a whole through the connecting plate 5, which facilitates the synchronous movement of the piston rods 4.

[0023] The two ends of the cylinder barrel 1 are connected with guide sleeves 7, and the guide sleeves 7 are movably matched with the piston rod 4. A conventional dynamic sealing assembly is arranged between the guide sleeve 7 and the piston rod 4.

[0024] A conventional dynamic seal assembly is also provided between the piston 3 and the cylinder 1. The piston 3 divides the cylinder 1 into a rod chamber A, a rodless chamber C and a rod chamber B, and the rodless chamber C is located between the two pistons 3. The cylinder 1 is provided with a rodless chamber oil port C1, a rod chamber oil port A1 and a rod chamber oil port B1. The rodless chamber oil ports C1 are connected in series to form a rodless chamber C oil circuit, and the rod chamber oil ports A1 and the rod chamber oil ports B1 are connected in series to form a rod chamber oil circuit.

[0025] The oil inflow of the rodless chamber C causes all piston rods 4 to extend synchronously. The external oil simultaneously supplies oil to the oil circuit of the rodless chamber C, and the oil enters the rodless chamber C to push the piston rods 4 in the two cylinder barrels 1 to extend outwards simultaneously.

[0026] The rod chamber A and the rod chamber B are simultaneously supplied with oil to make all the piston rods 4 retract synchronously, and the rod chamber A or the rod chamber B is supplied with oil separately to make the piston rod 4 on one side retract synchronously. The external oil is supplied to the rod chamber A and the rod chamber B through the rod chamber oil passage at the same time, and the piston rod 4 in the cylinder 1 retracts synchronously. The connecting plate 5 connects the piston rods 4 as a whole, and the synchronous oil supply of the rod chamber A, the rod chamber B and the rodless chamber C realizes the synchronous extension and retraction of all the piston rods 4. The supporting force of each support shoe is the sum of the thrusts of the two cylinders, thereby providing sufficient supporting force.

[0027] Different from the prior art, the support shoe oil cylinder of the utility model reduces the installation space of the cross-section of the support shoe oil cylinder without reducing the support shoe supporting force, thereby providing reliable supporting force for a small-diameter TBM tunnel boring machine.

[0028] The above schematically describes the present invention and its implementation methods, which are not restrictive. The drawings show only one implementation method of the present invention, and the actual structure is not limited thereto. Therefore, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the present invention, they should all fall within the protection scope of the present invention.

Claims

1. A shoe support cylinder, characterized in that: The invention comprises two cylinder barrels (1), the cylinder barrels (1) are arranged side by side and connected as a whole, a piston assembly is symmetrically arranged in the cylinder barrel (1), the piston assembly comprises a piston (3) and a piston rod (4), the piston rods (4) on the same side are connected as a whole, the piston (3) divides the cylinder barrel (1) into a rod chamber A, a rodless chamber C and a rod chamber B, and the rodless chamber C is located between the two pistons.

2. The gripper cylinder according to claim 1, characterized in that: The rodless chamber C is supplied with oil so that all piston rods (4) are extended synchronously, the rod chamber A and the rod chamber B are supplied with oil at the same time so that all piston rods (4) are retracted synchronously, and the rod chamber A or the rod chamber B is supplied with oil alone so that the piston rod (4) on one side is retracted synchronously.

3. The gripper cylinder according to claim 2, characterized in that: The cylinder barrel (1) is provided with a rodless chamber oil port C1, a rod chamber oil port A1 and a rod chamber oil port B1. The rodless chamber oil ports C1 are connected in series to form a rodless chamber C oil circuit, and the rod chamber oil ports A1 and the rod chamber oil ports B1 are connected in series to form a rod chamber oil circuit.

4. The gripper cylinder according to claim 1, characterized in that: The ends of the piston rods (4) extend out of the cylinder barrel (1), and the piston rods (4) arranged side by side are integrally connected via a connecting plate (5).

5. The gripper cylinder according to claim 4, characterized in that: The connecting plate (5) is connected to the piston rod (4) via screws (6).

6. The gripper cylinder according to claim 5, characterized in that: Both ends of the cylinder barrel (1) are connected to guide sleeves (7), and the guide sleeves (7) are movably matched with the piston rod (4).

7. The gripper cylinder according to claim 1, characterized in that: The cylinder barrels (1) are integrally connected via a cylinder body connecting plate (2), and the cylinder barrels (1) are arranged in parallel and aligned.

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