CN219005883U - Solid wrench capable of continuously outputting torque - Google Patents

Abstract

The utility model relates to a solid wrench capable of continuously outputting torque, which relates to the technical field of fastening or disassembling of hexagonal heads or square head bolts and nuts. The wrench is particularly suitable for disassembling and assembling the gauge rod nuts on the inner side or the outer side of two steel rails under the condition that the condition is described in the general gauge rod of TB1780-86, fig. 1 and the technical condition of insulating gauge rod of TB/T2492-2004, fig. 1.

Description

Solid wrench capable of continuously outputting torque

Technical Field

The utility model relates to a solid wrench capable of continuously outputting torque, which is suitable for fastening or disassembling a hexagon head or square head bolt and nut, and relates to the technical field of fastening or disassembling of the hexagon head or square head bolt and nut; in particular, the present utility model relates to a solid wrench capable of continuously outputting torque.

Background

Along with the high-speed development of national economy, higher requirements are put forward on the assembly work efficiency, and the hexagon head or square head bolt and nut occupy a large proportion in the fastener at present, so that the hexagon head or square head bolt and nut can be fast fastened or detached, and the method has great significance in improving the assembly work efficiency.

In the assembly work of various industries, various wrenches are main tools for fastening or detaching hexagon heads or square head bolts and nuts, and contact parts of various wrenches and hexagon heads or square head bolts and nuts mainly have two types, namely a socket type described in GB 3390.1-89 and a box wrench type described in GB/T4388-1995, and a solid wrench type described in GB/T4388-1995.

The wrench of the first form in the prior art is sleeved with the hexagonal head or square head bolt and the nut from the axis direction to form a connection relationship, so that the purposes of driving the hexagonal head or square head bolt and the nut to rotate and fastening or detaching are achieved, the wrench of the form is easy to realize the effect of continuously outputting torque, and one end of the hexagonal head or square head bolt and one end of the nut are required to have enough wrench space.

The wrench in the second form in the prior art is sleeved with the hexagonal head or the square head bolt and the nut from the radial direction to form a connection relationship, so that the purposes of driving the hexagonal head or the square head bolt and the nut to rotate and fastening or detaching are achieved, the wrench in the form is difficult to realize the effect of continuously outputting torque, and one end of the hexagonal head or the square head bolt and one end of the nut are not required to have enough wrench space.

The Chinese patent publication No. CN 208854523U discloses an electric wrench. As shown in fig. 1, 2, 3, 4 and 5, the electric wrench provided by the utility model comprises: an electric wrench body 1; a bolt sleeve 2; a telescopic rod 3; an outer sleeve 2-1; an inner sleeve 2-2; a base 4-1; a rotating disc 4-2; 4-5 of vortex-shaped spiral grooves; 4-6 of sliding grooves; 4-7 of sliding blocks; 4-8 of clamping plates. The electric wrench can achieve the aim of continuous rotation when the hexagonal head or the square head bolt and the nut are fastened or detached, but requires enough wrench space at one end of the hexagonal head or the square head bolt and the nut, and the space at least can accommodate the electric wrench.

The solid wrench capable of continuously outputting torque can make up the defects in the prior art, can achieve the purpose of continuous rotation when the hexagonal head or square head bolt and the nut are fastened or detached, can reduce the wrench space required by one end of the hexagonal head or square head bolt and the nut along the axis direction, and can especially clamp the hexagonal head or square head bolt and the nut along the vertical direction of the axis and apply continuous rotation torque to achieve the purpose of fastening or detaching. The utility model fills the blank of the prior art.

Disclosure of Invention

The utility model aims to provide a solid wrench capable of continuously outputting torque, which overcomes the defects of the prior art, has reasonable structure and high bearing capacity, and can adjust the position of the input torque and the output torque.

Further, the present utility model also provides a solid wrench capable of continuously outputting torque, which can clamp nuts from the vertical direction of the axis of the gauge rod on the inner side or the outer side of two steel rails under the condition described in fig. 1 of common gauge rod of TB1780-86 and fig. 1 of insulating gauge rod technical condition of TB/T2492-2004, and apply continuous torque to the nuts to achieve the purpose of fastening or dismounting.

The above object of the present utility model is achieved by the following technical solutions:

according to the utility model, the solid wrench capable of continuously outputting torque comprises a handle, a rear shell, a bearing, an open gear, 2 relay gears, a central gear, an input gear shaft, a front shell, a centering plate, a fastener, a centering plate fastener and the like.

The input gear shaft rotates, so that the sun gear is driven to rotate, the sun gear drives the relay gears to rotate, 2 relay gears drive the opening gears to rotate together, and nuts clamped on the opening gears are driven to rotate continuously.

The two gears are symmetrically arranged at two sides of a central connecting line of the central gear and the opening gear.

The connecting lines of the centers O2 and O4 of 1 and 2 relay gears and the center O4 of 1 central gear form included angles alpha 1, alpha 2, alpha 3 and alpha 4, the included angle formed by the centers of the opening gears and two meshing points is alpha 1, the included angle formed by the centers of the central gears and the two meshing points is alpha 3, and the included angles formed by the centers of 2 relay gears and the two meshing points are alpha 2 and alpha 4, and in the structure, alpha 2 = alpha 4. The opening gear is provided with an opening for clamping the nut, the opening is equivalent to an arc notch generated on a pitch circle of gear transmission, the corresponding central angle is alpha 1', and in order to ensure the transmission continuity, 2 relay gears carry out transmission relay on two sides of the notch, and the alpha 1 is more than or equal to alpha 1'. In order to ensure that the closed annular transmission chain formed by the 4 gears can smoothly move, when the 4 gears are in a correctly meshed state, the closed annular transmission chain structurally meets four-point requirements, namely, one of the closed annular transmission chain and the 2 relay gears are symmetrically arranged at two sides of a central connecting line of the central gear and the opening gear; secondly, alpha 1' is less than or equal to alpha 1; thirdly, the tooth number of the sun gear is Z3, and alpha 3 is an integer multiple of 360 degrees/Z3; fourth, at the maximum value, the pinion gear does not interfere with the sun gear during movement.

The solid wrench capable of continuously outputting torque is also provided with an input gear shaft, and the aim of adjusting the input and output torque ratios can be achieved by changing the transmission ratio of the solid wrench and the central gear. The position of the input gear shaft is adjusted, and the purpose of changing the torque input position can be achieved.

The solid wrench capable of continuously outputting torque can be driven by a mechanical wrench to work, so that the working efficiency and the working capacity can be improved, and the mechanical wrench driven by electric energy, hydraulic oil and compressed gas can be used for driving.

A solid wrench capable of continuously outputting torque is provided with a centering plate, and can be centered by utilizing a screw rod in a nut, so that the rotation center of an opening gear is ensured to be basically consistent with that of the screw rod in the nut, and the stability of operation is improved. The centering plate main body is plate-shaped, an arc at one end of the centering plate is provided with a centering plate end part, the middle part of the centering plate is provided with a centering plate position adjusting groove, and the arc at the centering plate end part is matched with a screw rod in the nut to perform the centering function. The centering plate is arranged in the front shell centering plate mounting groove or the rear shell centering plate mounting groove, can move in the mounting groove and is fixed, and the position of the circular arc at the end part of the centering plate is adjusted.

A front shell and a rear shell of the solid wrench capable of continuously outputting torque are respectively provided with a sector-shaped marking groove which takes the center of an open gear as a circle center and radiates outwards, and the sector-shaped marking grooves are respectively called a front shell position marking groove and a rear shell position marking groove. Fan-shaped marking grooves which radiate outwards with the center of the opening gear as the center of a circle are also arranged on two sides of the opening gear, and are called as opening gear position marking grooves. When the position mark groove of the open gear is overlapped with the position mark groove of the front shell or the position mark groove of the rear shell, the size L of the open space of the open gear, the front shell and the rear shell is larger than or equal to the nominal size M of the screw rod of the gauge rod, the screw rod is ensured to enter the opening of the open gear, and the solid wrench capable of continuously outputting torque can translate and rotate along the axis of the screw rod in the rail nut, so that the nut can be sleeved in the opening of the open gear.

Since the center portion of the open gear is to accommodate the work object nut and the bearings cannot be arranged like other gears, in the present utility model, a structure is adopted in which the open bearing is also provided with an opening through which the work object passes, the open bearing being mounted in a space formed by the front housing open bearing mounting groove and the rear housing open bearing mounting groove together. The front shell opening bearing mounting groove and the rear shell opening bearing mounting groove are respectively provided with a boss at two ends, so that the opening bearing can be prevented from falling out of the groove.

A solid wrench capable of continuously outputting torque is characterized by that its structural size is reduced to adapt to narrow working space, and the lower portions of front shell body and rear shell body are smoothly contracted toward the centre of open bearing, so that the requirements for strength can be met, and its structural size can be reduced.

Therefore, the solid wrench capable of continuously outputting torque provided by the utility model has the advantages of reasonable and compact structure, safety, reliability, high operation efficiency, convenience in operation and portability, and can achieve the purposes of being installed in the direction perpendicular to the axis of the nut and continuously outputting torque.

[ description of the drawings ]

The present disclosure will become more apparent with reference to the accompanying drawings. It should be understood that these drawings are illustrative only and are not drawn to scale and are not intended to limit the scope of the utility model. In the figure:

FIG. 1 is a schematic view of the overall structure of an electric wrench in the prior art;

FIG. 2 is a cross-sectional view of a bolt sleeve of an electric wrench of the prior art;

FIG. 3 is a cross-sectional view of another construction of a bolt sleeve of the prior art electric wrench;

FIG. 4 is a cross-sectional view of another construction of a bolt sleeve of the prior art electric wrench;

FIG. 5 is a split view of a bolt sleeve of a prior art electric wrench;

FIG. 6 is an exploded isometric view of a solid wrench with continuous torque output according to the present utility model;

FIG. 7 is an isometric view of a solid wrench with continuous torque output according to the present utility model;

FIG. 8 is an illustration of an embodiment of a solid wrench capable of continuously outputting torque according to the present utility model, in the operating condition depicted in FIG. 1 of TB1780-86 common gauge rod;

FIG. 9 is a schematic diagram of a torque continuously exportable solid wrench driven by a motor wrench 7000 in accordance with an embodiment of the present utility model;

FIG. 10 is a view illustrating the rear state of FIG. 7, according to an embodiment of the solid wrench capable of continuously outputting torque of the present utility model;

FIG. 11 is an isometric view of a centering plate 6100, according to an embodiment of the present utility model, that can continuously output torque;

FIG. 12 is a schematic diagram of a transmission of an embodiment of a solid wrench capable of continuously outputting torque according to the present utility model;

FIG. 13 is a schematic diagram of the meshing of gears according to an embodiment of the solid wrench capable of continuously outputting torque of the present utility model;

FIG. 14 is a schematic view showing the engagement of gears according to an embodiment of the solid wrench capable of continuously outputting torque according to the present utility model;

FIG. 15 is an isometric view of an open-ended bearing 6040 according to an embodiment of the present utility model for continuously outputting torque;

fig. 16 is an isometric view of a solid wrench with continuous torque output according to an embodiment of the present utility model, a split gear 6050.

The utility model relates to a component and a reference number list of a solid wrench capable of continuously outputting torque.

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[ detailed description ] of the utility model

Specific embodiments of the present utility model will be described in detail below with reference to the accompanying drawings. The description is intended to be illustrative and exemplary only.

Fig. 6 is an exploded axial view of a solid wrench capable of continuously outputting torque according to the present utility model, and as shown in the drawing, the solid wrench 6000 capable of continuously outputting torque mainly includes a handle 6010, a rear housing 6020, a bearing 6030, a split bearing 6040, a split gear 6050, a relay gear 6060, a sun gear 6070, an input gear shaft 6080, a front housing 6090, a centering plate 6100, a fastener 6110, a centering plate fastener 6120, and the like.

Fig. 12 is a schematic transmission diagram of a solid wrench capable of continuously outputting torque according to an embodiment of the present utility model, in which an input gear shaft 6080 is rotated to drive a sun gear 6070 to rotate, the sun gear 6070 drives a relay gear 6060 to rotate, and 2 relay gears 6060 jointly drive a split gear 6050 to rotate, so that a gauge rod nut 5031 engaged in the split gear 6050 is driven to continuously rotate.

Fig. 12 is a schematic transmission diagram of a solid wrench capable of continuously outputting torque according to an embodiment of the present utility model, in which 1 sun gear 6070, 2 relay gears 6060,1 and opening gear 6050 form a closed ring transmission chain together, and 2 relay gears 6060 are symmetrically arranged on both sides of the central connection line between the sun gear 6070 and the opening gear 6050.

Fig. 13 is a schematic diagram showing the meshing situation of 4 gears such as 1 split gear 6050, 2 relay gears 6060,1 sun gear 6070, etc. according to an embodiment of the solid wrench capable of continuously outputting torque, wherein the opening of the split gear 6050 faces away from the 2 relay gears 6060. The connection lines of the center O1 of the gear 6050, the centers O2 and O4 of the relay gears 6060 and the center O4 of the gear 6070 form included angles of alpha 1, alpha 2, alpha 3 and alpha 4, and meanwhile, as shown in fig. 16, since the gear 6050 is provided with the gear opening 6052 for clamping the nut, the effect of the opening on transmission continuity is not lack of E F, but lack of C D, E F refers to the fact that the center O1 is formed by the intersection point E, F of the center O1 and the gear profile with the pitch circle of the gear 6050, the corresponding center angle is alpha 1", C D refers to the fact that the intersection point C, D of the center O1 and the gear profile closest to the opening with the pitch circle of the gear 6050, and the corresponding center angle is alpha 1'.

Fig. 14 is a schematic diagram showing the meshing situation of 4 gears such as 1 split gear 6050, 2 relay gears 6060,1 sun gear 6070, etc. according to an embodiment of the solid wrench capable of continuously outputting torque, which shows the situation that the opening of the split gear 6050 faces 2 relay gears 6060. The connecting lines of the centers O1, O2 and O4 of the opening gears 6050 and the relay gears 6060 and the center O4 of the central gear 6070 form included angles alpha 1, alpha 2, alpha 3 and alpha 4, and the included angle alpha 1' is not more than alpha 1 in order to ensure that a closed annular transmission chain formed by 4 gears can ensure continuous transmission. Since the 2 relay gears 6060 are symmetrically arranged on both sides of the line O1O3, that is, the difference between α2=α4, α1 and α1' will be equally distributed on both sides of the line O1O3, which has positive significance in the case of compact structure, the limited material can be uniformly distributed on both sides of the line O1O3, and the stress states near the two points A, B are the same, so that an equal-strength structure can be formed at the weak points of the two A, B. In addition, 2 relay gears 6060 are symmetrically arranged, and the production is convenient.

Referring to fig. 13, in a specific embodiment of a solid wrench capable of continuously outputting torque according to the present utility model, the meshing conditions of 4 gears such as 1 split gear 6050, 2 relay gears 6060,1 sun gear 6070, etc. when 1 split gear 6050 and 2 relay gears 6060 are in a correctly meshed state, the assembly relationship between 2 relay gears 6060 and 1 split gear 6050 further satisfies the following two conditions, wherein, condition one, 2 relay gears 6060 are symmetrically located on both sides of line O1O3, condition two, and α1'. Ltoreq.α1. On the basis of ensuring the two conditions, the sun gear 6070 is also correctly meshed with the 2 relay gears 6060 and does not interfere with the opening gear 6050, and the specific implementation mode of the solid wrench capable of continuously outputting torque can be realized by adopting the following technical means, wherein the tooth number of the sun gear 6070 is Z3, the tooth number of the opening gear 6050 is Z1, the modulus is m, the specific implementation mode of the solid wrench capable of continuously outputting torque can be realized by adjusting alpha 1 and alpha 3 to meet the following two requirements, the alpha 3 is an integer multiple of 360 degrees/Z3, the second requirement is required, and the length of O1O3 is equal to or more than m (Z1 +Z 3)/2 +2ha under the condition that the gears are not deflected, wherein ha is the tooth top height, and if the technical means of deflection is adopted, the opening gear 6050 and the sun gear 6070 do not interfere in the transmission process. On the premise of meeting the two conditions and the two requirements, taking the maximum value of alpha 3 has the following advantages, because the difference between alpha 1 and alpha 1' is the largest at this time, the strength of the opening gear 6050 is beneficial, and the length of O1O3 is the smallest, so that the size of the solid wrench capable of continuously outputting torque in the direction of O1O3 is beneficial to reduction. Of course, on the premise of meeting the two conditions and the two requirements, the result of gradually reducing the alpha 3 can also be obtained, and the result of reducing the size of the solid wrench capable of continuously outputting torque in the vertical direction of O1O3 is also beneficial in specific occasions.

Fig. 9 is a schematic diagram of a solid wrench capable of continuously outputting torque according to the embodiment of the present utility model, wherein the solid wrench 7000 is driven by a motor wrench 7000 driven by electric energy, hydraulic oil or compressed gas, and the motor wrench 7000 is driven by the motor wrench 7000 in such a manner that an output shaft of the motor wrench 7000 is connected with an input gear shaft end 6081, so as to improve working efficiency and working capacity.

Fig. 8 shows an embodiment of a solid wrench capable of continuously outputting torque according to the present utility model, in the working state of the case described in fig. 1 in "TB 1780-86 common gauge rod", the centering plate 6100 can be centered by the screw of the gauge rod 5030, so as to ensure that the rotation center of the split gear 6050 is kept substantially consistent with the rotation center of the gauge rod nut 5031, and improve the stability of the operation.

Fig. 11 is an isometric view of a centering plate 6100 according to an embodiment of the present utility model, wherein the centering plate 6100 is provided with a centering plate end arc 6101 and a centering plate position adjustment groove 6102, and the centering plate end arc 6101 engages with the screw of the gauge rod 5030 to perform centering. Referring to fig. 7, a centering plate 6100 is mounted in the front housing centering plate mounting groove 6093 or the rear housing centering plate mounting groove 6023 of fig. 10 and is movable and fixed in the mounting groove for adjusting the position of the centering plate end arc 6101.

Referring to fig. 7 and 10, a rear housing 6020 of the front housing 6090 is provided with fan-shaped marking grooves which radiate outwards with the center of the split gear 6050 as the center, namely a front housing position marking groove 6092 and a rear housing position marking groove 6022. Fan-shaped marking grooves which radiate outwards around the center of the opening gear 6050, namely opening gear position marking grooves 6051, are also arranged on two sides of the opening gear 6050. Referring to fig. 10, when there is an overlapping portion between the open gear position mark groove 6051 and the front housing position mark groove 6092 or the rear housing position mark groove 6022, the size L of the open space between the open gear 6050 and the open space between the open gear 6090 and the rear housing 6020 is equal to or greater than the nominal size M of the screw of the gauge rod 5030, so that the screw is ensured to enter the open gear 6050, and a solid wrench 6000 capable of continuously outputting torque translates along the axis of the screw of the gauge rod 5030 and rotates, so that the gauge rod nut 5031 is sleeved in the open gear 6050.

Referring to fig. 6 and 15, since the center portion of the split gear 6050 is to accommodate the work object gauge bar nut 5031, the bearings cannot be arranged like other gears, in the present utility model, a structure is adopted in which the split bearing 6040 is also provided with a split bearing opening 6041 through which the work object passes, and the split bearing 6040 is mounted in a space formed by the front housing split bearing mounting groove 6091 and the rear housing split bearing mounting groove 6021 together. The front housing open bearing mounting groove 6091 and the rear housing open bearing mounting groove 6021 are provided with bosses at both end portions, and the open bearing 6040 is prevented from coming out of the grooves.

Fig. 8 shows an embodiment of a solid wrench capable of continuously outputting torque according to the present utility model, in which the working condition of the solid wrench is shown in fig. 1 of the general gauge rod TB1780-86, in order to facilitate the tamping operation of the railway line, the gauge rod 5030 is not installed in the middle of two sleepers 5010 but is installed in a position close to one sleeper 5010, which results in a narrow working space on one side of the solid wrench 6000 capable of continuously outputting torque. To solve this problem, as shown in fig. 6, the lower parts of the front housing 6090 and the rear housing 6020 are smoothly contracted toward the center of the open bearing 6040, which satisfies the strength requirement and reduces the structural size.

Referring to fig. 6, a solid wrench 6000 capable of continuously outputting torque is further provided with an input gear shaft 6080, and the purpose of adjusting the input and output torque ratios can be achieved by changing the transmission ratio of the solid wrench 6000 to the sun gear 6070. The position of the input gear shaft 6080 is adjusted, and the purpose of changing the torque input position can also be achieved.

As described above, exemplary embodiments of the present utility model are described in detail with reference to the accompanying drawings. It should be understood that the present application is not intended to be limited to these specific details set forth in order to provide a thorough understanding of the present utility model. Equivalent or similar changes to the structure and features of the exemplary embodiments may be made without departing from the spirit and scope of the present utility model, which changes will also fall within the protection scope of the utility model as defined in the appended claims.

Claims (6)

1. The solid wrench capable of continuously outputting torque comprises a handle, a rear shell, a bearing, an open gear, 2 relay gears, a central gear, an input gear shaft, a front shell, a centering plate, a fastener and a centering plate fastener, wherein the open gear, the 2 relay gears and the central gear jointly form a closed annular transmission chain, the centers O1 and O4 of the open gears, the centers O2 and O4 of the 2 relay gears and the connecting line of the centers O4 of the 1 central gear form included angles alpha 1, alpha 2, alpha 3 and alpha 4, the included angle formed by the centers of the open gears and two meshing points is alpha 1, the open gear is provided with an opening for clamping nuts, the opening is equivalent to an arc notch on a pitch circle of gear transmission, the corresponding central angle is alpha 1', the included angle formed by the centers of the central gear and the two meshing points is alpha 3, the included angle formed by the centers of the 2 relay gears and the two meshing points is alpha 2, and the number of teeth of the central gear is Z3; secondly, in order to ensure continuity alpha 1' of the movement of the opening gear is less than or equal to alpha 1; third, after the sun gear is assembled in the closed endless drive chain, α3 is an integer multiple of 360 °/Z3; fourth, at maximum, α3 does not interfere with the sun gear during movement.

2. The solid wrench capable of continuously outputting torque as claimed in claim 1, further comprising an input gear shaft, wherein the input gear shaft is adapted to adjust the input and output torque ratios by changing the transmission ratio with the sun gear, and the torque input position is adapted by adjusting the position of the input gear shaft.

3. The solid wrench capable of continuously outputting torque as claimed in claim 1, wherein the solid wrench is provided with a centering plate, the centering plate body is plate-shaped, an end arc of the centering plate is arranged at one end of the centering plate, a centering plate position adjusting groove is arranged in the middle of the centering plate, the centering plate is arranged in the front shell centering plate mounting groove or the rear shell centering plate mounting groove and can move and be fixed in the mounting groove for adjusting the position of the end arc of the centering plate, the end arc of the centering plate is matched with a screw rod in the nut, the rotation center of the opening gear is ensured to be basically consistent with the rotation center of the screw rod in the nut, and the solid wrench plays a role of centering.

4. The solid wrench capable of continuously outputting torque as claimed in claim 1, wherein the front housing and the rear housing are respectively provided with a sector-shaped marking groove which is outwards radiated by taking the center of the open gear as a circle center, which is called a front housing position marking groove and a rear housing position marking groove, and the two sides of the open gear are also provided with sector-shaped marking grooves which are outwards radiated by taking the center of the open gear as a circle center, which are called open gear position marking grooves, and when the open gear position marking grooves are overlapped with the front housing position marking groove or the rear housing position marking groove, the size of the opening of the open gear is larger than or equal to the nominal size of the screw of the gauge rod, so that the screw can enter the opening of the open gear, and the solid wrench capable of continuously outputting torque can be further translated and rotated along the axis of the screw in the rail nut, so that the nut can be sleeved in the opening of the open gear.

5. The solid wrench capable of continuously outputting torque as claimed in claim 1, wherein 2 open bearings are provided between the front housing, the rear housing and the open gear, the open bearings are also provided with an opening for passing a work object, and the open bearings are installed in a space formed by the front housing open bearing installation groove and the rear housing open bearing installation groove together.

6. The solid wrench capable of continuously outputting torque as claimed in claim 1, wherein the lower parts of the front and rear cases are smoothly contracted toward the center of the open bearing, and the front and rear case open bearing mounting grooves are provided with bosses at both end portions for preventing the open bearing from coming out of the groove.

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