Open combined type driving wrench for narrow space

Abstract

The utility model discloses an opening combined type driving wrench for a narrow space, which comprises a wrench body, a transmission component is arranged in the wrench body, one end of the wrench body is provided with a wrench ring connected with the transmission component, and a clamping sleeve is arranged in a track of the wrench ring. Wherein the clamping sleeve comprises a semi-ring piece arranged in the wrench ring track and a plurality of arc-shaped pieces connected with the semi-ring piece, the arc-shaped pieces and the semi-ring piece form a complete ring-shaped structure, the arc-shaped pieces and the semi-ring piece are connected through first pins, and every two adjacent arc-shaped pieces are connected through first pins. Related equipment at the two ends of the connecting rod does not need to be disassembled, small-torque fastening operation and large-torque fastening operation can be rapidly conducted according to needs, the safety risk of personnel and equipment injury is greatly reduced, meanwhile, manpower and time are saved, and the risk of stroke precision deviation caused by repeated disassembly and assembly of the connecting rod is avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to drive spanner technical field, especially relate to a open combination type drive spanner for narrow space. BACKGROUND

[0002] In the mechanical field, it is difficult to tighten the intermediate nut of the connecting rod, and the connecting rod is usually connected with the related transmission auxiliary equipment at both ends. In order to put the spanner on the nut, an open-end wrench is usually used for tightening operation.

[0003] However, in the tightening operation scene of the connecting rod type intermediate nut with a large torque of more than 1000 NM, the open-end wrench is easy to slip when tightening the bolt, especially in the tightening scene of the large torque, there is a certain safety risk of personnel and equipment damage. In order to avoid the phenomenon of slipping and ensure the safety of personnel, a wrench such as a plum blossom wrench is usually used for operation. However, when the plum blossom wrench is used, the related equipment at both ends of the connecting rod needs to be removed, and then the plum blossom wrench is inserted from the axial direction of the connecting rod and is sleeved on the nut for operation. This tightening method is not only complicated in operation, which wastes a lot of manpower and time, but also needs to disassemble and connect the connecting auxiliary equipment of the connecting rod many times, which causes the deviation of the connecting stroke accuracy of the connecting rod, the excessive transmission torque of the equipment, the impact damage of the equipment, and the fatigue damage of the equipment connecting key. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at overcoming the defects of the prior art, and provides an open combination type drive spanner for narrow space. One end of the spanner body is provided with a clamping sleeve for fixing the nut. The clamping sleeve is designed in a combination type, that is, without the need to remove the related equipment at both ends of the connecting rod, the semi-ring part is clamped on the nut, and small torque operation can be performed. When large torque operation is needed, the multiple arc-shaped parts are sequentially connected with the semi-ring part to form a complete ring structure to fix the nut, and large torque tightening operation can be performed. The multiple arc-shaped parts are sequentially installed to facilitate clamping with the nut, which is convenient for the operator to fix the nut in the narrow space, greatly reduces the safety risk of personnel and equipment damage, saves manpower and time, and avoids the risk of deviation of the stroke accuracy of the connecting rod caused by multiple disassembly and assembly of the connecting rod.

[0005] The utility model realizes the purpose through the following technical scheme:

[0006] An open combination type drive spanner for narrow space comprises a spanner body, a transmission assembly is arranged in the spanner body, one end of the spanner body is provided with a spanner ring connected with the transmission assembly, and a clamping sleeve is arranged in the track of the spanner ring.

[0007] The sleeve comprises a half ring arranged in the track of the wrench ring and a plurality of arc-shaped pieces connected with the half ring, the plurality of arc-shaped pieces and the half ring form a complete ring structure, and the arc-shaped pieces and the half ring are connected by first pins, and the adjacent two arc-shaped pieces are also connected by the first pins.

[0008] In one embodiment, a plurality of sleeves are arranged in the track of the wrench ring, and the adjacent two sleeves are connected by second pins.

[0009] Through the embodiment, the thickness of the sleeve in the wrench ring can be adjusted according to the thickness of the nut to be disassembled, so that the sleeve can be in full contact with the nut, and the disassembly quality can be ensured, especially during large torque operation.

[0010] In one embodiment, the transmission assembly comprises a driving oil cylinder arranged in the wrench body and a piston rod arranged in the driving oil cylinder, the driving oil cylinder is connected with a hydraulic pump through a hydraulic pipeline, one end of the piston rod is connected with a transmission head, and the transmission head is connected with the wrench ring through a transmission key.

[0011] In one embodiment, the wrench body has a first oil channel and a second oil channel in communication with the driving oil cylinder, the first oil channel is in communication with a cavity between the end of the driving oil cylinder and the piston rod, the second oil channel is in communication with a cavity in the piston rod, the first oil channel and the second oil channel are connected with the hydraulic pump through a joint and a hydraulic pipeline, and an angle rotating assembly is arranged between the joint and the first oil channel and the second oil channel.

[0012] Through the embodiment, in a narrow space, it is difficult to use the hydraulic wrench to fasten due to the interference of the hydraulic pipeline of the hydraulic wrench, which limits the large torque fastening operation. In the embodiment, the angle rotating assembly is used to connect the first oil channel and the second oil channel with the joint, so that the pipeline connected with the joint can be adjusted in position in space, thereby improving the application scenarios of the driving wrench.

[0013] In one embodiment, the first oil channel and the second oil channel of the wrench body are arranged adjacent to each other, one end of the angle rotating assembly is connected with the first oil channel and the second oil channel, and the other end is connected with a first joint and a second joint respectively.

[0014] Through the embodiment, the first oil channel and the second oil channel are connected with the angle rotating assembly at the same time, which is convenient for connecting with the hydraulic pump and adjusting the angle of the pipeline connected with the joint, and the two oil channels cooperate with each other to drive the piston rod to displace in different directions, so as to drive the wrench ring to drive the sleeve to tighten or loosen the nut.

[0015] In one embodiment, the angle rotating structure comprises a first rotating assembly and a second rotating assembly, one end of the first rotating assembly is communicated with the first joint and the second joint, the other end is hinged on the second rotating assembly, the second rotating assembly is arranged on an oil passage, and the oil passage is communicated with the first oil passage and the second oil passage respectively;

[0016] Through the embodiment, the first rotating assembly hinged on the second rotating assembly rotates in one direction, the second rotating assembly rotates on the oil passage in a direction perpendicular to the rotating direction of the first rotating assembly, and the pipeline connected with the joint can be adjusted freely in space.

[0017] In one embodiment, the angle rotating assembly is installed on one side of the wrench body, and a wrench base plate is further installed on the other side of the wrench body, and the side of the wrench base plate away from the wrench body is inclinedly extended.

[0018] Through the embodiment, the wrench base plate which is inclinedly extended is used to resist the reaction force in the wrench driving process by abutting against the component near the nut to be disassembled.

[0019] In one embodiment, the half ring further has an angle disc.

[0020] Through the embodiment, the rotation state of the nut is observed by the operator when the nut is disassembled.

[0021] The utility model discloses the beneficial effects are:

[0022] (1) the one end of wrench body is provided with the sleeve for fixing nut, and the sleeve combination type design is used, i.e. without removing the related equipment of the two ends of connecting rod, the half ring is clamped on the nut, and small torque operation can be carried out, and when large torque operation is needed, a plurality of arc-shaped pieces are sequentially connected with the half ring to form a complete annular structure to fix the nut, so that large torque fastening operation can be carried out, the plurality of arc-shaped pieces are sequentially installed, and the nut is clamped, so that the operator can fix the nut in a small space, the safety risk of personnel and equipment injury is greatly reduced, manpower and time are saved, and the risk of stroke accuracy deviation caused by multiple disassembly and assembly of the connecting rod is avoided.

[0023] (2) the angle rotating structure and the wrench base plate are arranged on the two sides of the wrench body respectively, the angle of the hydraulic pipeline is adjusted by the angle rotating structure, the hydraulic wrench is used in a small space is facilitated, and the wrench base plate supports the wrench body on the other side to resist the reaction force in the fastening process, so that the wrench can stably work. BRIEF DESCRIPTION OF DRAWINGS

[0024] In the following, the utility model will be described in more detail based on the embodiments and with reference to the drawings.

[0025] Wherein:

[0026] Figure 1 The structure schematic diagram of the utility model is shown;

[0027] Figure 2 The structure schematic diagram of the utility model's half ring piece is shown;

[0028] Figure 3 The structure schematic diagram of the utility model's multiple arc pieces is shown;

[0029] In the drawings, same components use same reference numerals.The drawings are not according to actual proportion.

[0030] Reference numerals:

[0031] 1-wrench body, 2-wrench ring, 3-half ring piece, 4-arc piece, 5-first joint, 6-second joint, 7-first rotation assembly, 8-second rotation assembly, 9-first pin, 10-dial, 11-wrench seat plate, 12-hydraulic oil cylinder, 13-piston rod, 14-first oil way, 15-second oil way. DETAILED DESCRIPTION

[0032] The utility model will be further described below in connection with the drawings.

[0033] The utility model provides a narrow space is with open combination formula drive wrench, as shown in Figures 1 to 3 Including wrench body 1, transmission assembly is arranged in wrench body 1, and the one end of wrench body 1 has the wrench ring 2 connected with transmission assembly, and the track of wrench ring 2 is provided with the sleeve;

[0034] Wherein, sleeve includes the half ring piece 3 being arranged in the track of wrench ring 2 and multiple arc pieces 4 connected with half ring piece 3, and multiple arc pieces 4 and half ring piece 3 form complete annular structure, and the first pin 9 is connected between arc piece 4 and half ring piece 3 and between adjacent two arc pieces 4;

[0035] Specifically, corresponding through hole is set up on half ring piece 3 and arc piece 4;

[0036] It needs to be explained that, as Figure 1As shown, the half ring 3 is arranged in the track of the wrench ring 2, and the two ends of the half ring 3 can be connected with the arc-shaped piece 4 through the first pin 9, that is, without disassembling the related equipment at both ends of the connecting rod, in a small torque operating environment, the nut can be clamped by using the half ring 3, and in a large torque operating environment, in order to avoid the phenomenon of slipping, the arc-shaped piece 4 is sequentially connected at the two ends of the half ring 3, until a complete ring structure is formed, so that the nut is completely clamped, and in the process of completely clamping the nut, a plurality of arc-shaped pieces are sequentially fitted around the circumference of the nut, which facilitates the installation of the operator in a small space, greatly reduces the safety risk of personnel and equipment damage, saves manpower and time, and avoids the risk of deviation of the stroke accuracy caused by disassembling the connecting rod multiple times;

[0037] In one embodiment, a plurality of sleeves are arranged in the track of the wrench ring 2, and two adjacent sleeves are connected by a second pin, that is, the thickness of the sleeve in the wrench ring 2 can be adjusted according to the thickness of the nut to be disassembled, so that the sleeve can be in full contact with the nut, especially in large torque operation, to avoid slipping and damage to the nut and ensure disassembly quality;

[0038] In one embodiment, as shown, Figure 1 The transmission assembly includes a drive oil cylinder arranged in the wrench body 1 and a piston rod 13 arranged in the drive oil cylinder, the drive oil cylinder is connected with the hydraulic pump through the hydraulic pipeline, and one end of the piston rod 13 is connected with a transmission head, and the transmission head is connected with the wrench ring 2 through a transmission key;

[0039] Specifically, the wrench body 1 has a first oil channel 14 and a second oil channel 15 in communication with the drive oil cylinder, the first oil channel 14 is in communication with the cavity between the end of the drive oil cylinder and the piston rod 13, and the second oil channel 15 is in communication with the cavity in the piston rod 13, the first oil channel 14 and the second oil channel 15 are connected with the hydraulic pump through a joint and a hydraulic pipeline, and an angle rotating assembly is further arranged between the joint and the first oil channel 14 and the second oil channel 15;

[0040] It should be noted that when the hydraulic pump drives the hydraulic oil into the cavity between the end of the drive oil cylinder and the piston rod 13, the piston rod 13 moves towards the transmission head, and when the hydraulic oil enters the cavity in the piston rod 13, the piston rod 13 moves away from the transmission head, thereby tightening or loosening the nut, and the angle rotating assembly is arranged to adjust the angle of the joint, thereby facilitating the adjustment of the hydraulic pipeline connected with the joint in a small space, and improving the application range of the wrench;

[0041] Specifically, as shown, Figure 1As shown, the first oil passage 14 and the second oil passage 15 of the wrench body 1 are arranged adjacent to each other, one end of the angle rotation assembly is connected with the first oil passage 14 and the second oil passage 15, the other end is connected with the first joint 5 and the second joint 6 respectively, the angle rotation structure comprises a first rotation assembly 7 and a second rotation assembly 8, one end of the first rotation assembly 7 is communicated with the first joint 5 and the second joint 6, the other end is hinged on the second rotation assembly 8, the second rotation assembly 8 is sleeved on the oil passage opening, and the oil passage opening is communicated with the first oil passage 14 and the second oil passage 15 respectively;

[0042] It should be noted that the first rotation assembly 7 has two independent oil passages communicated with the first oil passage 14 and the second oil passage 15 respectively, the first rotation assembly 7 is hinged on the second rotation assembly 8, and the hinge can be used as the oil passage of the first rotation assembly 7 and the second rotation assembly 8, that is, the first rotation assembly 7 rotates around the second rotation assembly 8, and the in and out of the hydraulic oil is not affected, meanwhile, the second rotation assembly 8 is sleeved on the oil passage opening, the second rotation assembly 8 can rotate 360 degrees in the horizontal direction around the oil passage opening, the two oil passages in the second rotation assembly 8 keep communicated with the oil passage of the oil passage opening, and the oil passage opening can be a flange structure, the cylinder in the middle is communicated with the first oil passage 14, a plurality of through holes are formed in the end cover structure on the cylinder and communicated with the second oil passage 15, one oil passage of the second rotation assembly 8 is communicated with the cylinder and rotates along the cylinder, and the other oil passage is communicated with the plurality of through holes in the end cover structure;

[0043] In one embodiment, as shown in the drawings, Figure 1 The angle rotation assembly is installed on one side of the wrench body 1, the wrench seat plate 11 is further installed on the other side of the wrench body 1, the wrench seat plate 11 extends obliquely away from the wrench body 1, the angle rotation structure and the wrench seat plate 11 are arranged on the two sides of the wrench body 1 respectively, the angle of the hydraulic pipeline is adjusted by the angle rotation structure, the hydraulic wrench is convenient to use in a small space, and meanwhile the wrench seat plate 11 supports the wrench body 1 on the other side, that is, the obliquely extended wrench base is used to abut against the part near the nut to be disassembled, so that the reaction force in the wrench driving process is resisted;

[0044] In one embodiment, the half ring 2 further has an angle disc 10, so that the rotation state of the nut during disassembly and assembly is convenient for the operator to observe;

[0045] In the description of the utility model, it should be understood that the terms "upper", "lower", "bottom", "top", "front", "rear", "inner", "outer", "left", "right" and the like indicate the orientation or positional relationship shown in the drawings, and are only used for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0046] While the application has been described with reference to particular embodiments thereof, it is to be understood that these embodiments are merely illustrative of the principles and applications of the present application. It will thus be appreciated that numerous modifications can be made to the illustrative embodiments and that other arrangements can be devised without departing from the spirit and scope of the present application as defined by the appended claims. It is intended that the disclosure be construed as including all such modifications and arrangements. It is intended that the appended claims be construed to include the features noted above and those that appear in any substantial equivalent to those noted above.

Claims

1. An open combination driving wrench for narrow space, characterized by, The wrench body is internally provided with a transmission assembly, one end of the wrench body is provided with a wrench ring connected with the transmission assembly, and a clamping sleeve is arranged in the track of the wrench ring. The clamping sleeve comprises a half ring arranged in the track of the wrench ring and a plurality of arc-shaped members connected with the half ring, the plurality of arc-shaped members and the half ring form a complete annular structure, and the arc-shaped members and the half ring are connected by first pins.

2. The open combination driving wrench for narrow space according to claim 1, characterized in that, A plurality of clamping sleeves are arranged in the track of the wrench ring, and adjacent two clamping sleeves are connected by second pins.

3. The open combination drive wrench for use in a narrow space according to claim 1, wherein The transmission assembly comprises a driving oil cylinder arranged in the wrench body and a piston rod arranged in the driving oil cylinder, the driving oil cylinder is connected with a hydraulic pump through a hydraulic pipeline, one end of the piston rod is connected with a transmission head, and the transmission head is connected with the wrench ring through a transmission key.

4. The open combination drive wrench for use in a narrow space according to claim 3, wherein The wrench body is internally provided with a first oil channel and a second oil channel connected with the driving oil cylinder, the first oil channel is connected with a cavity between the end of the driving oil cylinder and the piston rod, the second oil channel is connected with a cavity in the piston rod, the first oil channel and the second oil channel are connected with the hydraulic pump through joints and hydraulic pipelines, and an angle rotating assembly is further arranged between the joints and the first oil channel and the second oil channel.

5. The open combination drive wrench for use in a tight space according to claim 4, wherein The first oil channel and the second oil channel of the wrench body are arranged adjacent to each other, one end of the angle rotating assembly is connected with the ports of the first oil channel and the second oil channel, and the other end is connected with the first joint and the second joint respectively.

6. The open combination drive wrench for use in a tight space according to claim 5, wherein The angle rotating assembly comprises a first rotating assembly and a second rotating assembly, one end of the first rotating assembly is connected with the first joint and the second joint, and the other end is hinged on the second rotating assembly, the second rotating assembly is arranged on the oil channel port, and the oil channel port is connected with the first oil channel and the second oil channel respectively.

7. The open combination drive wrench for use in a tight space according to claim 4, wherein The angle rotating assembly is installed on one side of the wrench body, a wrench seat plate is further installed on the other side of the wrench body, and the side away from the wrench body of the wrench seat plate is inclinedly extended.

8. The open combination drive wrench for use in a tight space according to claim 1, wherein The half ring is further provided with an angle disc.

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