Oil cylinder protection device, lifting oil cylinder and driving and anchoring machine

Abstract

The utility model relates to the technical field of roadway tunneling, in particular to an oil cylinder protection device, a lifting oil cylinder and a driving anchor machine, the oil cylinder protection device comprises a plurality of protection single bodies which are arranged in series, and the protection single bodies are arranged on an oil cylinder piston rod and used for limiting retraction of the oil cylinder piston rod; each protective single body comprises a protective seat, a locking piece and a buffer piece, the buffer piece is arranged on the protective seat, the locking piece comprises a first lock catch and a second lock catch, the first lock catch and the second lock catch are hinged to the protective seat respectively, and the first lock catch and the second lock catch are connected through a connecting piece; the protection base and the locking piece are matched to form an annular structure matched with an oil cylinder piston rod. The annular structure is arranged on the piston rod of the oil cylinder in an embracing mode, when the pressure of the oil cylinder is relieved, falling of the piston rod of the oil cylinder can be limited through the protection device (especially the protection base), then mechanical support is provided for a supported component (the large arm frame), the supported component (the large arm frame) is prevented from falling, and safety accidents are avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to roadway tunneling technical field, concretely relates to a kind of oil cylinder protection device, lifting oil cylinder and excavate anchor machine. BACKGROUND

[0002] At present, roadway tunneling in mining is mostly used excavate anchor integrated machine, with the characteristics of high tunneling efficiency, equipment relies on cutting system lifting action to realize cutting and other main functions.The routine maintenance work of lifting oil cylinder and its hydraulic lock or balance valve includes replacing valve core, adjusting pressure, adjusting speed, replacing pipeline etc., which may cause the hydraulic oil cylinder under maintenance to depressurize, and the support force of large arm support is mainly provided by the hydraulic oil cylinder not under maintenance, but the hydraulic oil cylinder not under maintenance also has the risk of depressurization, if the hydraulic oil cylinder providing support force depressurizes, it will cause oil cylinder piston rod to retract, large arm support to drop, and safety accident to occur.

[0003] Based on the above, it is urgent to provide an oil cylinder protection device, lifting oil cylinder and excavate anchor machine to solve the problems in the prior art. INVENTION CONTENTS

[0004] The utility model aims at providing an oil cylinder protection device, lifting oil cylinder and excavate anchor machine, and the specific technical solutions are as follows:

[0005] An oil cylinder protection device includes multiple protection units connected in series, which are arranged on the oil cylinder piston rod to limit the retraction of the oil cylinder piston rod.

[0006] The protection unit includes a protection seat, a locking member and a buffer member, and the buffer member is arranged on the protection seat.

[0007] The locking member includes a first lock and a second lock, which are respectively hinged to the protection seat, and the first lock and the second lock are connected by a connecting member; the protection seat and the locking member cooperate to form an annular structure matched with the oil cylinder piston rod.

[0008] Further, the protection seat is a C-shaped opening structure, and the two sides of the C-shaped opening are provided with hinged ears along the axial direction of the protection seat, and the first lock and the second lock are respectively hinged to the hinged ears through hinged shafts and locking nuts.

[0009] Further, the connecting member includes a first connecting block, a second connecting block and a safety pin, the first connecting block is arranged on the first lock, the second connecting block is arranged on the second lock, and the first connecting block and the second connecting block are locked and connected by the safety pin.

[0010] Further, the first connecting block and the second connecting block are arranged in a staggered manner, a first connecting hole is arranged on the first connecting block, a second connecting hole is arranged on the second connecting block, and the inner diameters of the first connecting hole and the second connecting hole match the outer diameter of the safety pin.

[0011] Further, the safety pin is connected with a chain, and the chain is arranged on the protective seat or the first lock or the second lock.

[0012] Further, a protective pad is arranged on the contact surface between the annular structure and the oil cylinder piston rod, and the protective pad is made of rubber.

[0013] Further, the buffer is arranged at both ends of the protective seat, and the buffer is made of rubber.

[0014] A lifting oil cylinder comprises a cylinder barrel, an oil cylinder piston rod and the oil cylinder protection device A, the oil cylinder piston rod is slidingly connected in the cylinder barrel, and the oil cylinder protection device A is clamped on the oil cylinder piston rod.

[0015] An anchor excavator comprises a sliding frame, a large arm frame and the lifting oil cylinder, the sliding frame is slidingly connected on the anchor excavator chassis, the large arm frame is hinged to the sliding frame, the lifting oil cylinder is arranged between the large arm frame and the sliding frame, the cylinder barrel of the lifting oil cylinder is hinged to the sliding frame, and the oil cylinder piston rod of the lifting oil cylinder is hinged to the large arm frame.

[0016] The technical scheme of the utility model has the following beneficial effects:

[0017] (1) The utility model provides an oil cylinder protection device which comprises a plurality of protective units arranged in series, the protective units are arranged on an oil cylinder piston rod and used for limiting the retraction of the oil cylinder piston rod, the protective unit comprises a protective seat, a locking member and a buffer, the buffer is arranged on the protective seat, the locking member comprises a first lock and a second lock, the first lock and the second lock are hinged to the protective seat respectively, and the first lock and the second lock are connected through a connecting member; the protective seat and the locking member cooperatively form an annular structure matched with the oil cylinder piston rod. The annular structure is clamped on the oil cylinder piston rod, when the oil cylinder is depressurized, the protective device (especially the protective seat) can limit the falling of the oil cylinder piston rod, thereby providing mechanical support for a supported component (a large arm frame) and preventing the supported component (the large arm frame) from falling, so that safety accidents are avoided.

[0018] (2) The utility model discloses a protection device, which comprises a protection seat, locking pieces and a buffer piece, the locking pieces comprise first and second lock buckles, the first and second lock buckles are hingedly connected to the protection seat, and the first and second lock buckles are connected through connecting pieces. The protection device provided by the utility model has the advantages of simple structure, small space occupation, convenient use and storage, and convenient installation and high operation efficiency.

[0019] (3) The utility model discloses a protection seat, which is provided with buffer pieces at both ends, and can play a buffering and protecting role when the protection seat contacts other components (such as a cylinder barrel of an oil cylinder or a supported component).

[0020] (4) The utility model discloses a protection seat, which is provided with a protective pad on the contact surface between the annular structure and the oil cylinder piston rod, and plays a protecting role on the oil cylinder piston rod to prevent damage to the oil cylinder piston rod.

[0021] (5) The utility model discloses a lifting oil cylinder, which comprises a cylinder barrel, an oil cylinder piston rod and an oil cylinder protection device A, the oil cylinder piston rod is slidably connected in the cylinder barrel, and the oil cylinder protection device A is clamped on the oil cylinder piston rod to limit the retraction of the oil cylinder piston rod.

[0022] (6) The utility model discloses a digging anchor machine, which comprises a sliding frame, a large arm frame and a lifting oil cylinder, the sliding frame is slidably connected to the chassis of the digging anchor machine, the large arm frame is hingedly connected to the sliding frame, a lifting oil cylinder is arranged between the large arm frame and the sliding frame, the cylinder barrel of the lifting oil cylinder is hingedly connected to the sliding frame, and the oil cylinder piston rod of the lifting oil cylinder is hingedly connected to the large arm frame. The oil cylinder protection device A arranged on the lifting oil cylinder can prevent the oil cylinder piston rod from falling back when the oil cylinder is depressurized, thereby maintaining the relative position of the large arm frame and the sliding frame and ensuring the personal safety of the operator.

[0023] In addition to the purposes, features and advantages described above, the utility model has other purposes, features and advantages. The utility model will be further described in detail below with reference to the drawings. DRAWINGS

[0024] The drawings that form part of the present application are used to provide further understanding of the utility model, and the illustrative embodiments of the utility model and the description thereof are used to explain the utility model and do not constitute improper limitation on the utility model. In the drawings:

[0025] Figure 1 is the front view of the oil cylinder protection device in the utility model embodiment;

[0026] Figure 2 is the left view of the oil cylinder protection device in the utility model embodiment;

[0027] Figure 3 is the top view of the oil cylinder protection device in the embodiment of the utility model;

[0028] Figure 4 is the structural schematic view of the excavating anchor machine in the embodiment;

[0029] Among them:

[0030] 1, protection seat, 2, locking piece, 2.1, first lock, 2.2 second lock, 2.3, connecting piece, 2.3.1, first connecting block, 2.3.2, second connecting block, 2.3.3, safety pin, 2.3.4, chain, 3, buffer, 4, sliding frame, 5, large arm frame, 6, lifting oil cylinder, 7, protection pad, 8, handle. DETAILED DESCRIPTION

[0031] The embodiments of the utility model are described in detail below in combination with the drawings, but the utility model can be implemented according to the multiple different ways defined and covered.

[0032] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0033] In addition, the terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" and the like can explicitly or implicitly include one or more features. In the description of the utility model, unless otherwise specified, the meaning of "multiple" is two or more.

[0034] EMBODIMENT

[0035] The embodiment provides an oil cylinder protection device, which comprises a plurality of protection units arranged in series, the protection unit is arranged on the oil cylinder piston rod, and is used for limiting the oil cylinder piston rod to retract;

[0036] Referring to Figures 1-3The protective device comprises a protective seat 1, a locking piece 2 and a buffer piece 3, the buffer piece 3 is arranged on the protective seat 1; the locking piece 2 comprises a first lock 2.1 and a second lock 2.2, the first lock 2.1 and the second lock 2.2 are respectively hinged with the protective seat 1, and the first lock 2.1 and the second lock 2.2 are connected through a connecting piece 2.3; the protective seat 1 and the locking piece 2 cooperate to form an annular structure matched with the oil cylinder piston rod, the annular structure is clamped on the oil cylinder piston rod, when the oil cylinder exists pressure relief, the protective device (in this embodiment, the protective seat 1) can limit the back-falling of the oil cylinder piston rod, thereby providing mechanical support for the supported component (the large arm support), preventing the supported component (the large arm support) from falling, and avoiding the occurrence of safety accidents.

[0037] In this embodiment, the protective seat 1 is a C-shaped opening structure, and two sides of the C-shaped opening are provided with hinged ears along the axial direction of the protective seat 1, and the first lock 2.1 and the second lock 2.2 are hinged with the hinged ears through a hinge shaft and a locking nut; specifically, two hinged ears are arranged on one side of the C-shaped opening, and the first lock 2.1 or the second lock 2.2 is arranged between the two hinged ears, a through hole is arranged on the hinged ear, a through hole for the hinge shaft to pass through is arranged on the first lock 2.1 and the second lock 2.2, and external threads are arranged on both ends of the hinge shaft, both ends of the hinge shaft pass through the hinged ear and are locked by the locking nut.

[0038] In this embodiment, the connecting piece 2.3 comprises a first connecting block 2.3.1, a second connecting block 2.3.2 and a safety pin 2.3.3, the first connecting block 2.3.1 is arranged on the first lock 2.1, the second connecting block 2.3.2 is arranged on the second lock 2.2, and the first connecting block 2.3.1 and the second connecting block 2.3.2 are locked and connected through the safety pin 2.3.3.

[0039] Preferably, the first connecting block 2.3.1 and the second connecting block 2.3.2 are arranged in a staggered manner, a first connecting hole is arranged on the first connecting block 2.3.1, a second connecting hole is arranged on the second connecting block 2.3.2, the inner diameters of the first connecting hole and the second connecting hole match the outer diameter of the safety pin 2.3.3, when the first lock 2.1 and the second lock 2.2 are folded, the first connecting hole and the second connecting hole are coaxial, and the safety pin 2.3.3 is inserted into the first connecting hole and the second connecting hole to realize the locking between the first lock 2.1 and the second lock 2.2.

[0040] Preferably, the safety pin 2.3.3 is connected with a chain 2.3.4, and the chain 2.3.4 is arranged on the protective seat 1 or the first lock 2.1 or the second lock 2.2 to prevent the safety pin 2.3.3 from being lost.

[0041] In the embodiment, the annular structure is provided with a protective pad 7 at the contact surface of the oil cylinder piston rod, the protective pad 7 is a rubber pad, and the protective pad 7 can protect the oil cylinder piston rod and prevent the oil cylinder piston rod from being damaged.

[0042] In the embodiment, preferably, the buffer 3 is arranged at both ends of the protective seat 1, and the buffer 3 is preferably a rubber pad and has the functions of buffering and protection.

[0043] In the embodiment, the side surface of the protective seat 1 is further provided with a handle 8, which facilitates the operator to take the protective seat 1.

[0044] When the maintenance operation is performed, the first lock buckle 2.1 and the second lock buckle 2.2 are opened, the protective seat 1 is placed on the oil cylinder piston rod, the bottom of the protective seat 1 abuts against the oil cylinder barrel, the upper part of the protective seat 1 is used to limit the back-falling of the oil cylinder piston rod and support the supported member (for example, the large arm support), the first lock buckle 2.1 and the second lock buckle 2.2 are closed after the protective seat 1 is placed, the axis of the first connecting hole coincides with the axis of the second connecting hole, and the safety pin 2.3.3 is inserted into the first connecting hole and the second connecting hole to realize the locking of the protective device on the oil cylinder piston rod. When the oil cylinder has pressure relief, the back-falling of the oil cylinder piston rod can be limited by the protective device, and then the mechanical support for the supported member (the large arm support) is provided, the supported member (the large arm support) is prevented from falling, and the occurrence of safety accidents is avoided.

[0045] The embodiment provides a lifting oil cylinder, which comprises a cylinder barrel, an oil cylinder piston rod and the oil cylinder protective device A as described above, the oil cylinder piston rod is slidably connected in the cylinder barrel, and the oil cylinder protective device A is clamped on the oil cylinder piston rod and limits the retraction of the oil cylinder piston rod.

[0046] The embodiment provides a digging anchor machine, which comprises a sliding frame 4, a large arm support 5 and the lifting oil cylinder 6 as described above. Figure 4 The sliding frame 4 is slidably connected to the chassis of the digging anchor machine, the large arm support 5 is hinged to the sliding frame 4, the lifting oil cylinder 6 is arranged between the large arm support 5 and the sliding frame 4, the cylinder barrel of the lifting oil cylinder 6 is hinged to the sliding frame 4, and the oil cylinder piston rod of the lifting oil cylinder 6 is hinged to the large arm support 5. The oil cylinder protective device A arranged on the oil cylinder piston rod of the lifting oil cylinder 6 can prevent the back-falling of the oil cylinder piston rod when the oil cylinder has pressure relief, and then the relative positions of the large arm support 5 and the sliding frame 4 are maintained, and the personal safety of the operator is ensured.

[0047] The above only describes the preferred embodiments of the utility model and is not used to limit the utility model. For those skilled in the art, the utility model can have various changes and modifications. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A hydraulic cylinder protection device, characterized in that, It includes multiple protective units arranged in series, the protective units being disposed on the piston rod of the hydraulic cylinder to limit the retraction of the piston rod of the hydraulic cylinder; The protective unit includes a protective base (1), a locking component (2), and a buffer component (3), wherein the buffer component (3) is disposed on the protective base (1); The locking member (2) includes a first latch (2.1) and a second latch (2.2). The first latch (2.1) and the second latch (2.2) are respectively hinged to the protective seat (1). The first latch (2.1) and the second latch (2.2) are connected by a connector (2.3). The protective seat (1) and the locking member (2) cooperate to form an annular structure that matches the piston rod of the hydraulic cylinder.

2. The hydraulic cylinder protection device according to claim 1, characterized in that, The protective seat (1) has a C-shaped opening structure. The two sides of the C-shaped opening are provided with hinge ears along the axial direction of the protective seat (1). The first latch (2.1) and the second latch (2.2) are respectively hinged to the hinge ears through the hinge shaft and the locking nut.

3. The hydraulic cylinder protection device according to claim 1, characterized in that, The connector (2.3) includes a first connecting block (2.3.1), a second connecting block (2.3.2), and a safety pin (2.3.3). The first connecting block (2.3.1) is disposed on the first latch (2.1), and the second connecting block (2.3.2) is disposed on the second latch (2.2). The first connecting block (2.3.1) and the second connecting block (2.3.2) are locked together by the safety pin (2.3.3).

4. A hydraulic cylinder protection device according to claim 3, characterized in that, The first connecting block (2.3.1) and the second connecting block (2.3.2) are offset from each other. The first connecting block (2.3.1) is provided with a first connecting hole, and the second connecting block (2.3.2) is provided with a second connecting hole. The inner diameter of the first connecting hole and the second connecting hole matches the outer diameter of the safety pin (2.3.3).

5. A hydraulic cylinder protection device according to claim 3, characterized in that, A chain (2.3.4) is connected to the safety pin (2.3.3), and the chain (2.3.4) is disposed on the protective seat (1) or the first latch (2.1) or the second latch (2.2).

6. A hydraulic cylinder protection device according to claim 1, characterized in that, A protective pad (7) is provided on the contact surface between the annular structure and the piston rod of the oil cylinder. The protective pad (7) is made of rubber.

7. A hydraulic cylinder protection device according to any one of claims 1-6, characterized in that, The buffer (3) is disposed at both ends of the protective seat (1), and the buffer (3) is made of rubber pads.

8. A lifting cylinder, characterized in that, It includes a cylinder barrel, a cylinder piston rod, and a cylinder protection device A as described in any one of claims 1-7, wherein the cylinder piston rod is slidably connected inside the cylinder barrel, and the cylinder protection device A is mounted on the cylinder piston rod.

9. A roadheader, characterized in that, The system includes a sliding frame (4), a boom (5), and a lifting cylinder (6) as described in claim 8. The sliding frame (4) is slidably connected to the roadheader chassis. The boom (5) is hinged to the sliding frame (4). A lifting cylinder (6) is provided between the boom (5) and the sliding frame (4). The cylinder of the lifting cylinder (6) is hinged to the sliding frame (4), and the piston rod of the lifting cylinder (6) is hinged to the boom (5).

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