CN111941057A

CN111941057A - Heavy-load anti-loose pin type limit tolerance regulator

Info

Publication number: CN111941057A
Application number: CN201911330635.7A
Authority: CN
Inventors: 程志毅; 刘军; 邓志礼; 胡锦文; 李志强; 李光文
Original assignee: Hubei Boshilong Technology Co ltd
Current assignee: Hubei Boshilong Technology Co ltd
Priority date: 2019-12-20
Filing date: 2019-12-20
Publication date: 2020-11-17

Abstract

The invention discloses a heavy-load anti-loosening pin type limit tolerance regulator, wherein a central hole is formed in a cylinder body, an internal thread is arranged on the inner wall of the lower part of the central hole of the cylinder body, an adjusting screw is screwed on the internal thread of the central hole of the cylinder body through the external thread of the adjusting screw, a through hole is formed in the adjusting screw, an annular baffle is arranged on the upper peripheral part of the cylinder body, an elastic limit clamp spring is annular, a fracture is formed on the elastic limit clamp spring, a positioning plate is arranged on the peripheral part of the elastic limit clamp spring, a positioning groove is formed in the inner wall of the through hole of the adjusting screw, the elastic limit clamp spring is positioned in the through hole of the adjusting screw and clamped in the positioning groove through the positioning plate, a pin hole is formed in the peripheral part: the tolerance regulator has the advantages of good regulating effect, convenience and rapidness in regulating operation, simple structure, low assembling difficulty and capability of greatly reducing the manufacturing cost.

Description

Heavy-load anti-loose pin type limit tolerance regulator

Technical Field

The invention relates to the technical field of tolerance regulators, in particular to the technical field of a tolerance regulator for fixing an automobile battery pack.

Background

At present, the market occupancy of electric automobiles is on a rising trend year by year, a battery pack is a core component of the electric automobiles, the battery pack needs to be fixedly installed on a frame in the manufacturing process of the electric automobiles, a common installation method at present is to arrange lifting lugs on the battery pack, respectively arrange corresponding through holes on the lifting lugs and the frame, lift the battery pack through lifting equipment to enable the lifting lugs of the battery pack to be in contact with the bottom surface of the frame, then penetrate bolts in the through holes of the lifting lugs of the battery pack and the frame, and screw nuts on the bolts to fix the battery pack on the frame, however, because the bottom surface of the frame is not a complete plane, the height may be uneven due to the structure and the like, when the battery pack is installed, each lifting lug on the battery pack cannot be attached to the bottom surface of the frame, and therefore, a distance tolerance exists between the lifting lugs of the battery pack and the bottom surface of the frame, if screw bolt and nut are screwed up by force this moment, then can press the lug pressure deformation on the battery package, consequently need use tolerance adjusting device to adjust the distance tolerance between battery package lug and the frame, common tolerance adjusting device structure is generally comparatively complicated on the market at present, the assembly degree of difficulty is great, manufacturing cost is higher, and traditional tolerance adjusting device is when carrying out the tolerance adjustment, not only the operation is very inconvenient, the installation effectiveness of battery package has seriously been influenced, moreover press the lug deformation of battery package easily in accommodation process.

Disclosure of Invention

The invention aims to solve the defects and provide the heavy-load anti-loosening pin type limiting tolerance regulator which has a simple structure, is very convenient to assemble and produce, can greatly reduce the manufacturing cost, is very convenient to adjust the tolerance, can effectively improve the installation efficiency, and can prevent a battery pack lifting lug from being damaged in the adjusting process.

The technical solution adopted by the present invention to solve the above technical problems is as follows:

a heavy-load anti-loosening pin type limit tolerance regulator comprises a cylinder body, an adjusting screw rod and an elastic limit clamp spring, wherein a central hole is formed in the cylinder body, an internal thread is arranged on the inner wall of the lower portion of the central hole of the cylinder body, the adjusting screw rod is screwed on the internal thread of the central hole of the cylinder body through the external thread of the adjusting screw rod, a through hole is formed in the adjusting screw rod, an annular baffle is arranged on the upper peripheral portion of the cylinder body, the elastic limit clamp spring is annular, a fracture is formed in the elastic limit clamp spring, a positioning plate is arranged on the peripheral portion of the elastic limit clamp spring, a positioning groove is formed in the inner wall of the through hole of the adjusting screw rod, the elastic limit clamp spring is positioned in the through hole of the adjusting screw rod and clamped in the positioning groove through the positioning plate, a pin hole is formed in the peripheral portion, an annular step surface corresponding to the limit pin is arranged on the inner wall of the central hole of the cylinder body.

The positioning groove on the inner wall of the through hole of the adjusting screw is annular.

And a central screw hole communicated with the central hole is formed in the upper part of the column body.

The peripheral wall of the cylinder body below the annular baffle is provided with flower teeth.

And an annular limiting plate is arranged at the bottom of the adjusting screw rod.

And anti-skid grains are arranged on the bottom surfaces of the adjusting screw and the annular limiting plate.

The upper part of the central hole of the cylinder is conical.

Locating plate along circumference equipartition on the spacing jump ring of elasticity, the quantity of locating plate is 3~6, and the arc shell fragment on the spacing jump ring of elasticity is along circumference equipartition, and the quantity of arc shell fragment is 3~ 6.

The elastic limit clamp spring is made of steel.

The invention adopts the technical proposal to achieve the following beneficial effects:

1. when the tolerance regulator is used for fixedly mounting the battery pack on the frame of the electric automobile, the cylinder is firstly penetrated in the through hole of the battery pack lifting lug, the flower teeth on the outer peripheral wall of the cylinder are forcibly embedded into the inner peripheral wall of the through hole of the battery pack lifting lug, and simultaneously the end surface of the annular baffle is contacted with the lifting lug, then the adjusting screw rod is screwed on the internal thread of the central hole of the column body, then the battery pack is supported by the lifting equipment, the adjusting screw rod is rotated by the wrench, so that the anti-skid grains on the adjusting screw rod and the annular limit plate are contacted with the bottom surface of the frame, thereby realizing the purpose of adjusting the tolerance of the distance between the battery pack lifting lug and the bottom surface of the frame, having good adjusting effect, the adjustment operation is very convenient and fast, the installation efficiency of the battery pack is effectively improved, and meanwhile, the tolerance adjuster is simple in structure, low in assembly difficulty and capable of greatly reducing the manufacturing cost.

2. Adjusting screw's in-process is adjusted through the spanner, after adjusting screw and the bottom surface contact of the anti-skidding line of annular limiting plate and frame, if continue to rotate adjusting screw through the spanner this moment, because required moment of torsion increases when rotating, the arc shell fragment is less than the rotation moment of torsion to the power of holding tightly of spanner wrench head, make the wrench head overcome and take place to skid with the frictional force between the arc shell fragment, reach the function of limit torsion, make adjusting screw can't continue to move towards the direction of frame again, thereby avoided the lug top of wrapping the battery bad.

3. After the spanner of spanner is blocked and is put between the arc shell fragment, under the extrusion effect of spanner to the arc shell fragment, make the arc shell fragment take place to warp, and then drive the spacer pin of arc shell fragment upper end outwards to expand along the pinhole, make the outer tip of spacer pin remove to the top of annular step face, at the in-process that adjusting screw removed, if the outer tip of spacer pin and the annular step face contact of cylinder, then can't rotate adjusting screw again, thereby make adjusting screw can't break away from the cylinder, reach and carry out spacing purpose to adjusting screw, avoided if the phenomenon that adjusting screw revolves off from the cylinder when tolerance is too big.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a cross-sectional view A-A of the present invention of FIG. 1;

FIG. 3 is a cross-sectional view B-B of the present invention shown in FIG. 1;

fig. 4 is a schematic structural diagram of the elastic limit clamp spring in fig. 1.

Detailed Description

As shown in fig. 1, 2 and 3, the heavy-duty anti-loosening pin type limit tolerance regulator comprises a cylinder 1, an adjusting screw 2 and an elastic limit clamp spring 3, wherein a central hole 4 is formed in the cylinder 1, the upper part of the central hole 4 is conical, a central screw hole 16 communicated with the central hole 4 is formed in the upper part of the cylinder 1, an internal thread 5 is formed in the inner wall of the lower part of the central hole 4 of the cylinder 1, the adjusting screw 2 is screwed on the internal thread 5 of the central hole 4 of the cylinder 1 through an external thread 6 of the adjusting screw 2, a through hole 7 is formed in the adjusting screw 2, an annular baffle 9 is arranged on the upper peripheral part of the cylinder 1, flower teeth 17 are arranged on the peripheral wall of the cylinder 1 below the annular baffle 9, an annular limit plate 8 is arranged at the bottom of the adjusting screw 2, and anti-slip threads 18 are arranged on the. As shown in fig. 4, the elastic limit clamp spring 3 is annular, the elastic limit clamp spring 3 is made of steel, a fracture 10 is arranged on the elastic limit clamp spring 3, a positioning plate 11 is arranged on the periphery of the elastic limit clamp spring 3, the positioning plates 11 are uniformly distributed along the circumferential direction, the number of the positioning plates 11 is 3-6, positioning grooves 12 are arranged on the inner wall of the through hole 7 of the adjusting screw rod 2, the positioning groove 12 is annular, the elastic limit clamp spring 3 is positioned in the through hole 7 of the adjusting screw rod 2 and is clamped in the positioning groove 12 through the positioning plate 11, a pin hole 19 is arranged on the periphery of the adjusting screw rod 2, an arc-shaped elastic sheet 13 is arranged on the upper part of the elastic limit clamp spring 3, the arc-shaped elastic sheets 13 are uniformly distributed along the circumferential direction, the number of the arc-shaped elastic sheets 13 is 3-6, the arc-shaped elastic sheets 13 are provided with limit pins 14, the limit pin 14 is inserted into the pin hole 19, and an annular step surface 15 corresponding to the limit pin 14 is provided on the inner wall of the central hole 4 of the column body 1.

When the heavy-duty anti-loosening pin type limiting tolerance regulator is used for fixedly mounting a battery pack on a frame of an electric automobile, a plurality of lifting lugs are arranged on the battery pack, a first connecting hole is formed in each lifting lug, a second connecting hole coaxial with the first connecting hole of each lifting lug is formed in the frame, the tolerance regulator in the figure 1 is rotated 180 degrees and reversed, an adjusting screw 2 is taken down from a cylinder 1, the cylinder 1 penetrates through the first connecting hole of each lifting lug of the battery pack from bottom to top and exerts upward pressure on the cylinder 1, the spline 17 on the outer peripheral wall of the cylinder 1 is forcibly embedded into the inner peripheral wall of the first connecting hole of each lifting lug of the battery pack, the end face of the annular baffle plate 9 is in contact with the inner peripheral wall of the corresponding lifting lug of the battery pack, good anti-loosening effect is achieved on the cylinder 1 through the spline 17, and the annular baffle plate 9 plays a bearing effect on the battery pack after mounting. Then, the adjusting screw 2 is screwed on the internal thread 5 of the central hole 4 of the column body 1, and then the battery pack is supported by the lifting equipment, so that the distance between the lifting lug of the battery pack and the bottom surface of the frame reaches a preset value, at the moment, the annular limiting plate 8 of the adjusting screw 2 is not in contact with the bottom surface of the frame, then, a wrench is taken by a worker, a wrench head of the wrench penetrates through the second connecting hole of the frame and is clamped into the through hole 7 of the adjusting screw 2 and is clamped between the arc-shaped elastic sheets 13, the wrench head is clamped by the arc-shaped elastic sheets 13, at the moment, under the extrusion effect of the wrench head on the arc-shaped elastic sheets 13, the arc-shaped elastic sheets 13 are deformed, and then the limiting pin 14 at the upper end part of the arc-shaped elastic sheets 13 is driven to expand outwards along the pin hole 19, so that the outer end. Then, the adjusting screw 2 is rotated through the wrench, so that the adjusting screw 2 moves towards the direction far away from the central screw hole 16 until the anti-skid grains 18 of the adjusting screw 2 and the annular limiting plate 8 contact with the bottom surface of the frame, at the moment, if the adjusting screw 2 is rotated continuously through the wrench, the required torque is increased during rotation, the holding force of the arc-shaped elastic sheet 13 to the wrench head of the wrench is smaller than the rotating torque, the wrench head overcomes the friction force between the wrench head and the arc-shaped elastic sheet 13 to slip, the function of torque limiting is achieved, the adjusting screw 2 can not move towards the direction of the frame any more, and the phenomenon that a lifting lug of a battery pack is damaged is avoided. In the moving process of the adjusting screw 2, if the outer end part of the limit pin 14 is in contact with the annular step surface 15 of the cylinder 1, the adjusting screw 2 cannot be rotated any more, so that the adjusting screw 2 cannot be separated from the cylinder 1, the purpose of limiting the adjusting screw 2 is achieved, and the phenomenon that the adjusting screw 2 is unscrewed from the cylinder 1 when the tolerance is too large is avoided. And then, taking a bolt and a nut for fastening the battery pack, threading the bolt through a second connecting hole of the frame, a through hole 7 of the adjusting screw rod 2 and a central hole 4 of the cylinder 1 in sequence, screwing the bolt into a central screw hole 16 of the cylinder 1, threading the bolt out of the central screw hole 16, screwing the nut on the threaded part of the bolt, and enabling the nut to be tightly attached to the end surface of the cylinder 1, thereby finishing the fixed installation of the battery pack. It should be noted that, in the process of rotationally adjusting the adjusting screw 2, if the outer end portion of the limit pin 14 contacts with the annular step surface 15 of the cylinder 1, it indicates that the adjusting screw 2 has moved to the maximum stroke position, and if the adjusting screw 2 and the anti-slip threads 18 on the annular limit plate 8 still do not contact with the bottom surface of the vehicle frame at this time, the adjusting screw 2 should not be rotated any more, and the bolt and the nut should be screwed down forcibly, so that the lifting lug of the battery pack is pressed and deformed, and the anti-slip threads 18 on the adjusting screw 2 and the annular limit plate 8 contact with the bottom surface of the vehicle frame.

Claims

1. Spacing tolerance regulator of heavy load locking pin formula which characterized in that: it comprises a cylinder body, an adjusting screw rod and an elastic limit clamp spring, wherein a central hole is arranged in the cylinder body, the inner wall of the lower part of the central hole of the cylinder is provided with internal threads, the adjusting screw rod is screwed on the internal threads of the central hole of the cylinder through the external threads, a through hole is arranged in the adjusting screw rod, an annular baffle is arranged on the upper peripheral part of the cylinder body, the elastic limit clamp spring is annular, a fracture is arranged on the elastic limit clamp spring, a positioning plate is arranged on the peripheral part of the elastic limit clamp spring, a positioning groove is arranged on the inner wall of the through hole of the adjusting screw rod, the elastic limit clamp spring is positioned in the through hole of the adjusting screw rod and is clamped in the positioning groove through the positioning plate, a pin hole is arranged on the periphery of the adjusting screw rod, an arc-shaped elastic sheet is arranged on the upper part of the elastic limit clamp spring, a limit pin is arranged on the arc-shaped elastic sheet, the limit pin is inserted into the pin hole, and the inner wall of the central hole of the column body is provided with an annular step surface corresponding to the limit pin.

2. The heavy duty check pin limit tolerance adjuster of claim 1, wherein: the positioning groove on the inner wall of the through hole of the adjusting screw is annular.

3. The heavy duty check pin limit tolerance adjuster according to claim 1 or 2, wherein: and a central screw hole communicated with the central hole is formed in the upper part of the column body.

4. The heavy duty check pin limit tolerance adjuster according to claim 1 or 2, wherein: the peripheral wall of the cylinder body below the annular baffle is provided with flower teeth.

5. The heavy duty check pin limit tolerance adjuster according to claim 1 or 2, wherein: and an annular limiting plate is arranged at the bottom of the adjusting screw rod.

6. The heavy duty check pin limit tolerance adjuster of claim 5, wherein: and anti-skid grains are arranged on the bottom surfaces of the adjusting screw and the annular limiting plate.

7. The heavy duty check pin limit tolerance adjuster according to claim 1 or 2, wherein: the upper part of the central hole of the cylinder is conical.

8. The heavy duty check pin limit tolerance adjuster according to claim 1 or 2, wherein: locating plate along circumference equipartition on the spacing jump ring of elasticity, the quantity of locating plate is 3~6, and the arc shell fragment on the spacing jump ring of elasticity is along circumference equipartition, and the quantity of arc shell fragment is 3~ 6.

9. The heavy duty check pin limit tolerance adjuster according to claim 1 or 2, wherein: the elastic limit clamp spring is made of steel.