A shield segment outer arc surface finishing device

Abstract

The present invention discloses a device for finishing the outer arc surface of a shield tunneling segment. The device can utilize the weight of a pressure roller and the elastic force of a spring to adaptively adjust the finishing force so as to evenly finish the outer arc surface of the shield tunneling segment. The device is characterized in that two support frames are placed in parallel, a tripod is arranged at the bottom end of the support frame, two casters are arranged on the tripod, a push handle is arranged in the middle of the support frame, two ends of a top plate are respectively connected to the top ends of the two support frames, the vertical section of the top plate is an isosceles triangle, the upper surface of the top plate is a horizontal plane, a plurality of telescopic cylinders are equidistantly arranged on two oblique sections of the top plate, the plurality of telescopic cylinders are parallel, the bottom ends of the telescopic cylinders protrude inwardly to form a limit ring, one ends of a plurality of telescopic rods are respectively socketed with a plurality of telescopic cylinders, a convex block is arranged at one end of the telescopic rod, a spring is arranged between the convex block and the telescopic cylinder, the spring is located in the telescopic cylinder, the other end of the telescopic rod extends beyond the bottom end of the telescopic cylinder, and a connecting frame is arranged at the other end of the telescopic rod.

Description

Technical Field

[0001] The present invention discloses a shield segment outer arc surface finishing device, which relates to a device for finishing the outer arc surface of a shield segment, and belongs to the field of construction equipment. In particular, it relates to a device that can use the self-gravity of a pressure roller and the elastic force of a spring to adaptively adjust the finishing force, so as to evenly finish the outer arc surface of the shield segment. Background Art

[0002] The shield segment is the main assembly component of the shield construction and the innermost barrier of the tunnel. It is responsible for resisting soil pressure, groundwater pressure and some special loads. When casting the shield segment, in order to ensure the flatness of the cast outer arc surface, the formed outer arc surface must be finished after casting. Traditionally, it is generally done manually with a trowel for smoothing. The finishing work is slow and inefficient, and requires workers to continue holding the trowel to work, which has a high labor intensity. The existing technology uses a push roller structure to perform the finishing work. Due to the large width and length of the shield segment, the push roller itself is long, and it is more laborious and inconvenient for personnel to hold the push roller. In addition, when pushing the push roller, it is necessary to always maintain the uniformity of the hand-held pushing force, which affects the flatness of the finishing.

[0003] Announcement No. CN210880122U discloses a shield segment concrete finishing device, including a segment mold, the shield segment is arranged inside the segment mold, the finishing device also includes a sliding frame, a roller and a hand-held pull rod, the roller is rotatably connected to the bottom of the sliding frame, and the hand-held pull rod is arranged on the sliding frame. The finishing structure requires personnel to hold it and push it when in use, which is relatively laborious.

[0004] Announcement No. CN209942825U discloses a device capable of quickly finishing the outer arc surface of a shield segment, comprising a fixed shell and a handle welded to the upper end surface of the fixed shell, push plates in the vertical direction are arranged on both sides of the center of the inner cavity of the fixed shell, fixed blocks are welded to the top of the side where the two push plates are close to each other, and sliding rods are welded to the center of the lower end surface of the fixed blocks, and a clamping part is arranged on the outside of the connecting column located in the inner cavity of the fixed shell. The device needs to be hand-held by personnel when in use, which is relatively laborious. The force cannot be controlled during hand-held pushing, which affects the uniformity of the extrusion finishing. Summary of the invention

[0005] In order to improve the above situation, a shield segment outer arc surface finishing device of the present invention provides a device that can use the gravity of the pressure roller itself and the elastic force of the spring to adaptively adjust the finishing force to evenly finish the outer arc surface of the shield segment.

[0006] The outer arc surface finishing device of a shield segment of the present invention is realized as follows: The outer arc surface finishing device of a shield segment of the present invention is composed of a top plate, a support frame, a connecting frame, a pressure roller, a caster, a tripod, a push handle, a telescopic cylinder, a spring, a telescopic rod and a ball bearing. Two support frames are placed in parallel, a tripod is arranged at the bottom of the support frame, two casters are arranged on the tripod, the push handle is arranged in the middle of the support frame, the two ends of the top plate are respectively connected to the top ends of the two support frames, the vertical section of the top plate is an isosceles triangle, the upper surface of the top plate is a horizontal plane, and multiple equidistantly arranged on the two oblique sections of the top plate A telescopic cylinder is provided, and the multiple telescopic cylinders are parallel. The bottom end of the telescopic cylinder protrudes inward to form a limit ring. One end of the multiple telescopic rods is respectively connected with the multiple telescopic cylinders. A protrusion is provided at one end of the telescopic rod. A spring is provided between the protrusion and the telescopic cylinder. The spring is located in the telescopic cylinder. The other end of the telescopic rod extends beyond the bottom end of the telescopic cylinder. A connecting frame is provided at the other end of the telescopic rod. A pressure roller is provided at the bottom of the connecting frame. The pressure roller is a hollow structure. A plurality of balls are built in the pressure roller. A protective cover is provided on the push handle. The surface of the pressure roller is nitrided. The support frame is a telescopic structure.

[0007] Beneficial effects.

[0008] 1. It can finish the outer arc surface of the shield segment without the need for personnel to hold it, saving time and effort and achieving high finishing efficiency.

[0009] 2. It can ensure uniform force application on the outer arc surface and achieve good finishing effect.

[0010] 3. Convenient for mobile use. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 A three-dimensional structural diagram of a shield segment outer arc surface finishing device according to the present invention;

[0012] Figure 2 A schematic structural diagram of a shield segment outer arc surface finishing device according to the present invention;

[0013] Figure 3 A schematic structural diagram of a telescopic cylinder of a shield segment outer arc surface finishing device according to the present invention.

[0014] In the attached figure

[0015] The mold comprises: a top plate (1), a support frame (2), a connecting frame (3), a pressure roller (4), an outer arc surface (5), a mold body (6), casters (7), a foot frame (8), a push handle (9), a telescopic cylinder (10), a spring (11), a telescopic rod (12), and a ball bearing (13). DETAILED DESCRIPTION

[0016] The present invention provides a shield segment outer arc surface finishing device, which is implemented as follows: The present invention provides a shield segment outer arc surface finishing device, which comprises a top plate (1), a support frame (2), a connecting frame (3), a pressure roller (4), a caster (7), a foot frame (8), a push handle (9), a telescopic cylinder (10), a spring (11), a telescopic rod (12) and a ball (13), wherein two support frames (2) are placed in parallel, a foot frame (8) is arranged at the bottom end of the support frame (2), two casters (7) are arranged on the foot frame (8), the push handle (9) is arranged in the middle of the support frame (2), two ends of the top plate (1) are respectively connected to the top ends of the two support frames (2), the vertical section of the top plate (1) is an isosceles triangle, the upper surface of the top plate (1) is a horizontal plane, and a plurality of telescopic cylinders are equidistantly arranged on two oblique sections of the top plate (1). (10), a plurality of telescopic cylinders (10) are parallel to each other, the bottom end of the telescopic cylinder (10) protrudes inward to form a limit ring, one end of a plurality of telescopic rods (12) are respectively connected to the plurality of telescopic cylinders (10), a convex block is arranged at one end of the telescopic rod (12), a spring (11) is arranged between the convex block and the telescopic cylinder (10), the spring (11) is located in the telescopic cylinder (10), the other end of the telescopic rod (12) extends beyond the bottom end of the telescopic cylinder (10), a connecting frame (3) is arranged at the other end of the telescopic rod (12), a pressure roller (4) is arranged at the bottom of the connecting frame (3), the pressure roller (4) is a hollow structure, a plurality of balls (13) are built in the pressure roller (4), a protective cover is arranged on the push handle (9), the surface of the pressure roller (4) is nitrided, and the support frame (2) is a telescopic structure.

[0017] When in use, the finishing device is firstly arranged on the casting mold of the pipe segment, and the two support frames (2) are respectively located on both sides of the casting mold, so that the multiple groups of pressure rollers (4) are supported on the outer curved surface (5) of the pipe segment under the action of their own gravity and the spring (11), and then the push handles (9) on the two support frames (2) are pushed, so that the support frames (2) drive the casters (7) to roll, and at the same time, under the cooperation of the telescopic sleeve, the spring (11) and the telescopic rod (12), the pressure rollers (4) can roll on the outer curved surface (5) to finish the outer curved surface (5). During the finishing process, there is no need for manual hand-held tools, and the operation is simple and convenient.

[0018] The vertical cross-section of the top plate (1) is an isosceles triangle, and the upper surface of the top plate (1) is designed as a horizontal plane, which can form a stable support for the top plate (1), and can ensure the uniform stability of the pressing roller (4) during extrusion, thereby ensuring the extrusion effect;

[0019] The pressing roller (4) is a hollow structure, and is designed to have a plurality of balls (13) built therein, so that when the pressing roller (4) rotates, the balls (13) roll inside the pressing roller (4), thereby causing the pressing roller (4) to generate a vibration force, thereby improving the extrusion and finishing effect.

[0020] The bottom end of the telescopic cylinder (10) is protruded inwardly to form a limiting ring, and a protrusion is arranged at one end of the telescopic rod (12). The limiting ring cooperates with the protrusion to limit the position of the telescopic rod (12) and prevent the telescopic rod (12) from slipping out of the telescopic cylinder (10);

[0021] The push handle (9) is provided with a protective cover, which can protect the hand and the push handle (9) on the one hand, and can prevent the hand and the push handle (9) from sliding when the push handle (9) is pushed, thereby affecting the closing operation of the outer arc surface (5);

[0022] The design of nitriding the surface of the pressure roller (4) can increase the wear resistance of the surface of the pressure roller (4), and when the pressure roller (4) rolls on the outer arc surface (5), the service life of the pressure roller (4) can be increased;

[0023] The support frame (2) is designed as a telescopic structure, and the height of the support frame (2) can be adjusted according to the height of the segment casting mold, so as to cooperate with different segment casting molds to perform the outer arc surface (5) finishing work;

[0024] The connecting frame (3) and the pressing roller (4) are designed in cooperation with the telescopic sleeve, the spring (11) and the telescopic rod (12), so that when the outer arc surface (5) is contracted in cooperation with the mold body (6), the pressing roller (4) can be adaptively adjusted in cooperation with the telescopic sleeve, the spring (11) and the telescopic rod (12) to ensure uniform contraction of the arc surface;

[0025] The purpose of achieving a uniform surface closing of the outer arc surface (5) of the shield segment is achieved by utilizing the weight of the pressure roller (4) in conjunction with the elastic force of the spring (11) to adaptively adjust the surface closing force.

[0026] The above embodiments are preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Any person skilled in the art may make some improvements without departing from the scope of the present invention, that is, any equivalent improvements made according to the present invention should be covered by the scope of the present invention.

Claims

1. A shield segment outer arc surface finishing device, characterized by: The two support frames are placed in parallel, and a tripod is provided at the bottom of the support frame, and two casters are provided on the tripod. The push handle is placed in the middle of the support frame, and the two ends of the top plate are respectively connected to the top ends of the two support frames. Multiple telescopic cylinders are equidistantly provided on the two oblique sections of the top plate, and the multiple telescopic cylinders are parallel. The bottom ends of the telescopic cylinders protrude inward to form limit rings, and one ends of the multiple telescopic rods are respectively socketed with the multiple telescopic cylinders. A protrusion is provided at one end of the telescopic rod, and a spring is provided between the protrusion and the telescopic cylinder. The spring is located in the telescopic cylinder, and the other end of the telescopic rod extends beyond the bottom end of the telescopic cylinder. A connecting frame is provided at the other end of the telescopic rod, and a pressure roller is provided at the bottom of the connecting frame.

2. The shield segment outer arc surface finishing device according to claim 1 is characterized in that The vertical section of the top plate is an isosceles triangle, and the upper surface of the top plate is a horizontal plane.

3. The shield segment outer arc surface finishing device according to claim 1 is characterized in that The pressure roller is a hollow structure, and a plurality of balls are built in the pressure roller, so that when the pressure roller rotates, the balls roll inside the pressure roller, so that the pressure roller generates a vibration force.

4. The shield segment outer arc surface finishing device according to claim 1 is characterized in that The support frame is designed as a telescopic structure, and the height of the support frame can be adjusted according to the height of the pipe segment casting mold to cooperate with different pipe segment casting molds to perform outer arc surface finishing work.

5. The shield segment outer arc surface finishing device according to claim 1 is characterized in that A protective cover is arranged on the push handle.

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