CN112338853A - Bolt fastening limiting device and bolt fastening method - Google Patents
Bolt fastening limiting device and bolt fastening method Download PDFInfo
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- CN112338853A CN112338853A CN202011210632.2A CN202011210632A CN112338853A CN 112338853 A CN112338853 A CN 112338853A CN 202011210632 A CN202011210632 A CN 202011210632A CN 112338853 A CN112338853 A CN 112338853A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
- B25B23/02—Arrangements for handling screws or nuts
- B25B23/08—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
Bolt-up stop device, including can with treat fastening bolt's head circumference location fit's sleeve and the stop collar of coaxial suit on the sleeve, sleeve and stop collar circumference location fit, telescopic tail end stretches out from the stop collar, the head end stretches into to the stop collar in, treat fastening bolt's head stretch into the sleeve completely and with sleeve circumference location fit, treat fastening bolt's screw rod and stretch out from the stop collar head, the axial distance of stop collar head end face and sleeve head end face is greater than the head thickness of treating fastening bolt. The invention solves the problem of bolt over-twisting caused by improper operation in the bolt fastening process of a pneumatic tool or an electric tool and the like, avoids the defects of low fastening efficiency and high labor intensity of a manual torque wrench and high purchasing and maintaining cost of an electric torque wrench in the whole bolt fastening process, and improves the efficiency, reliability, practicability and safety of bolt fastening. The invention also relates to a bolt fastening method.
Description
Technical Field
The invention relates to a bolt fastening limiting device and a bolt fastening method, which are used for fastening bolts on equipment.
Background
The unqualified installation of the bolt is one of the main reasons causing the failure of the bolt, and the over-twisting or the insufficient pretightening force of the bolt are caused by improper installation. Therefore, the bolt fastening is used as a process in the motor production operation, and the bolt installation quality is directly related to the traction motor performance and the safe and reliable operation of the high-speed motor train unit train. At present, bolt fastening tools in the manufacturing process of bullet train products are mainly divided into an electric torque wrench and a manual torque wrench. The electric torque wrench is convenient to use, high in operation efficiency and good in fastening torque controllability, integrates the advantages of a manual torque wrench and an electric or pneumatic tool, but is high in purchase and maintenance cost and low in popularization degree; manual torque wrenches are widely used due to their low procurement and maintenance costs, but the disadvantages are also significant, such as inefficient tightening processes and labor intensive.
The retrieved relevant comparison documents:
1. CN201911115154.4, a bolt fastening method and a bolt fastening system;
2. CN201310541884.7, a transmission bolt fastening method;
3. CN201510171222.4, a bolt fastening tool and fastening method;
4. CN201580083154.4, bolt fastening method of lower connecting rod.
The invention provides a new bolt fastening idea aiming at the operation of fastening bolts, solves the problem of bolt over-twisting caused by improper operation in the bolt fastening process of a pneumatic tool or an electric tool and the like, and has simple structure and convenient operation.
Disclosure of Invention
The bolt fastening limiting device and the bolt fastening method provided by the invention have simple structures, can effectively limit the fastening of the bolt, reserve a part of screw rods for manual fastening, ensure that the fastening torque of the bolt reaches the torque range required by the process, ensure that the bolt cannot be over-twisted, solve the problem of over-twisting of the bolt caused by improper operation in the bolt fastening process of a pneumatic tool or an electric tool and the like, avoid the defects of low fastening efficiency and high labor intensity of the manual torque wrench and high purchasing and maintaining cost of an electrodynamic torque wrench in the whole bolt fastening process, improve the efficiency, reliability, practicability and safety of bolt fastening, and put an end to the quality hidden danger of the bolt being dead by one gun in the operation process, and are economical and practical.
In order to achieve the purpose, the invention adopts the technical scheme that:
bolt-up stop device, its characterized in that: including can with treat fastening bolt's head circumference location fit's sleeve and the stop collar of coaxial suit on the sleeve, sleeve and stop collar circumference location fit, telescopic tail end stretches out from the stop collar, and the head end stretches into to the stop collar in, treat fastening bolt's head stretch into the sleeve completely and with sleeve circumference location fit, treat fastening bolt's screw rod and stretch out from the stop collar head, the axial distance of stop collar head end face and sleeve head end face is greater than the head thickness of treating fastening bolt.
Preferably, the inner wall of the stop collar is provided with a boss, the outer wall of the sleeve is provided with a circumferential positioning groove corresponding to and matched with the boss, the boss axially extends into the circumferential positioning groove to circumferentially position the stop collar and the sleeve, the number of the bosses is two, and the two bosses are symmetrically distributed on the inner wall of the stop collar.
Preferably, the axial distance between the end face of the head end of the limiting sleeve and the end face of the head end of the sleeve is adjustable.
Preferably, the limiting sleeve is in clearance fit with the sleeve, an adjusting screw arranged along the radial direction is installed on the limiting sleeve, and the adjusting screw is in threaded fit with the limiting sleeve and penetrates through the limiting sleeve to be screwed tightly on the outer wall of the sleeve.
Preferably, the position of the outer wall of the sleeve, which is contacted with the adjusting screw, is a plane, and the inner wall of the sleeve is in a hexagon socket shape matched with the head of the bolt to be fastened.
Preferably, the sleeve is internally provided with an anti-loosening magnet attracted with the head of the bolt to be fastened.
A bolt fastening method for fastening a bolt to be fastened into a device screw hole, characterized by comprising the steps of:
pre-fastening: the bolt to be fastened is installed in the bolt fastening limiting device according to any one of claims, and the bolt to be fastened is pre-fastened by the bolt fastening limiting device, so that the length of a screw rod of the bolt to be fastened screwed into a screw hole of equipment is limited to be smaller than the length of the screw rod of the bolt to be fastened;
manual fastening: and after pre-fastening, continuously fastening the bolt to be fastened by adopting a manual torque wrench until the fastening torque of the bolt to be fastened reaches the torque range required by the process.
Preferably, the pre-fastening step specifically means:
firstly, according to the fastening torque process requirement of a bolt to be fastened, adjusting the axial distance between the end surface of the head end of the limiting sleeve and the end surface of the head end of the sleeve, so that the difference value between the axial distance between the end surface of the head end of the limiting sleeve and the end surface of the head end of the sleeve and the thickness of the head of the bolt to be fastened is equal to the length of the screw rod of the bolt to be fastened extending out of a device screw hole after pre;
then, a bolt to be fastened is installed on the bolt fastening limiting device in a matching mode, and the tail end of the sleeve is connected with a power tool;
and then, the end part of the screw rod of the bolt to be fastened is in coaxial butt joint with the equipment screw hole, the power tool is started to enable the sleeve to drive the bolt to be fastened to rotate and screw into the equipment screw hole, the bolt fastening limiting device and the bolt to be fastened move axially synchronously until the end surface of the head end of the limiting sleeve abuts against the outer plane of the equipment screw hole and the head part of the bolt to be fastened is separated from the sleeve.
Preferably, the step of pressing the head end face of the stop collar against the outer plane of the equipment screw hole and separating the head of the bolt to be fastened from the sleeve until the head end face of the stop collar abuts against the outer plane of the equipment screw hole in the process that the bolt to be fastened is gradually screwed into the equipment screw hole, so that the head end face of the stop collar cannot axially move any more, the bolt to be fastened continues to be screwed into the equipment screw hole, the head of the bolt to be fastened moves in the sleeve along the axial direction until the head of the bolt to be fastened is separated from the sleeve and enters the stop collar, and at the moment, the power tool cannot continue to drive the bolt to be fastened to rotate any more, and the bolt to be fastened is fastened.
Preferably, if the bolt to be fastened is sleeved with the gasket, the thickness of the head of the bolt to be fastened is the sum of the axial thickness of the head of the bolt to be fastened and the thickness of the gasket.
The invention relates to a bolt fastening limiting device, wherein a limiting sleeve is sleeved on a sleeve, the tail end of the sleeve extends out of the limiting sleeve and can be connected with a power tool, the head end of the sleeve extends into the limiting sleeve and is in circumferential positioning fit with the head of a bolt to be fastened, the power tool drives the sleeve to rotate, the limiting sleeve and the bolt to be fastened rotate synchronously, when the bolt to be fastened is screwed into a device screw hole, the continuous axial movement of the sleeve and the limiting sleeve is limited through the contact of the limiting sleeve and the outer plane of the device screw hole, the sleeve rotates continuously to enable the bolt to be fastened to be screwed into the device screw hole and move axially along the sleeve, the head of the bolt to be fastened is separated from the sleeve by the axial movement of the bolt to be fastened in the sleeve, the sleeve cannot rotate continuously to be fastened after separation, the fastening and limiting of the bolt to be fastened are realized, and the axial distance between the head end surface, when the head of the bolt to be fastened is separated from the sleeve, the head of the bolt to be fastened enters the limiting sleeve, and part of the screw rods are not fastened in place in the limiting sleeve, and the bolt to be fastened is fastened in place by using a manual torque wrench according to the process requirement of the fastening torque of the bolt to be fastened Practicality and security stop the quality hidden danger of the dead bolt of a rifle in the operation process, economical and practical.
Drawings
Fig. 1 is a schematic diagram of a bolt-fastening limiting device and a bolt to be fastened in a concrete embodiment.
Fig. 2 is a schematic structural view of the bolt fastening and limiting device.
FIG. 3 is a schematic view showing the distribution of the circumferential positioning grooves on the outer wall of the sleeve. A
Fig. 4 is a schematic cross-sectional view of a bolt-tightening limiting device.
Fig. 5 is a pre-tightening process diagram of the bolt to be tightened, wherein fig. a is a schematic diagram when the head end of the stop collar abuts against the outer plane of the equipment screw hole, and fig. B is a schematic diagram when the head end of the bolt to be tightened is separated from the sleeve.
Detailed Description
The following describes an embodiment of the present invention in detail with reference to fig. 1 to 5.
Bolt-up stop device, its characterized in that: including can with treat fastening bolt 100's head circumference location fit's sleeve 1 and coaxial suit stop collar 2 on sleeve 1, sleeve 1 and 2 circumference location fit of stop collar, sleeve 1's tail end stretches out from stop collar 2, the head end stretches into to stop collar 2 in, treat fastening bolt 100's head stretch into sleeve 1 completely and with sleeve 1 circumference location fit, treat fastening bolt 100's screw rod and stretch out from 2 head ends of stop collar, 2 head ends of stop collar terminal surface and sleeve 1 head end terminal surface's axial distance an are greater than the head thickness d of treating fastening bolt 100.
In the bolt fastening limiting device, the limiting sleeve 2 is sleeved on the sleeve 1, the tail end of the sleeve 1 extends out of the limiting sleeve 2 and can be connected with a power tool, the head end of the sleeve 1 extends into the limiting sleeve 2 and is in circumferential positioning fit with the head of the bolt 100 to be fastened, the power tool drives the sleeve 1 to rotate, so that the limiting sleeve 2 and the bolt 100 to be fastened rotate synchronously, when the bolt 100 to be fastened is screwed into the equipment screw hole, the head end of the limiting sleeve 2 contacts with the outer plane of the equipment screw hole to limit the continuous axial movement of the sleeve 1 and the limiting sleeve 2, the sleeve 1 rotates continuously so that the bolt 100 to be fastened continues to be screwed into the equipment screw hole and moves axially along the sleeve 1, the bolt 100 to be fastened moves axially in the sleeve 1 to separate the head of the bolt 100 to be fastened from the sleeve 1, the sleeve cannot continue to rotate the bolt 100 to be fastened after separation, so, the axial distance a between the end face of the head end of the limiting sleeve 2 and the end face of the head end of the sleeve 1 is larger than the thickness d of the head of the bolt to be fastened, when the head of the bolt to be fastened 100 is separated from the sleeve, the head of the bolt to be fastened 100 enters the limiting sleeve 2, and a part of the screw rods are not fastened in place in the limiting sleeve, and then the bolt to be fastened is fastened in place by using a manual torque wrench according to the process requirement of the fastening torque of the bolt to be fastened 100 The defects of high labor intensity and high purchasing and maintaining cost of the electrodynamic torque wrench are overcome, the efficiency, reliability, practicability and safety of bolt fastening are improved, the potential quality hazard that a bolt is knocked to be dead in the operation process is avoided, and the device is economical and practical.
Wherein, the inner wall of stop collar 2 on have boss 21, have on the outer wall of sleeve 1 and correspond complex circumference positioning groove 11 with boss 21, boss 21 stretches into in circumference positioning groove 11 along the axial with stop collar 2 and sleeve 1 circumference location, the quantity of boss 21 is two, and two boss 21 symmetric distribution on the inner wall of stop collar 2. Make stop collar 2 and sleeve 1 circumference location with the cooperation of boss 21 and circumference positioning groove 11, sleeve 1 can drive stop collar 2 synchronous rotation when rotating, the inner wall of sleeve 1 and the head circumference location cooperation of treating fastening bolt 100 to also drive and treat fastening bolt 100 synchronous rotation, and the tail end of sleeve 1 is connected with electronic or pnematic power tool, provide rotation power and make sleeve 1 and stop collar 2 and treat fastening bolt 100 synchronous axial displacement when treating fastening bolt 100 screw in to the equipment screw, the head end terminal surface of stop collar 2 offsets with the outer plane of equipment screw along with the axial displacement of stop collar 2, restriction sleeve 1 and stop collar 2 continue the axial displacement.
The axial distance a between the end face of the head end of the limiting sleeve 2 and the end face of the head end of the sleeve 1 is adjustable. The fastening limiting length of the bolt to be fastened 100 can be adjusted by adjusting the axial distance a between the head end face of the limiting sleeve 2 and the head end face of the sleeve 1, namely, the distance that the screw of the bolt to be fastened 100 extends out of the equipment screw hole when the head of the bolt to be fastened 100 is separated from the sleeve 1 is adjusted, so that the axial displacement of the bolt to be fastened 100 screwed by a manual torque wrench is adjusted, and the bolt fastening device is suitable for bolt fastening with different lengths and different fastening torque technological requirements.
Wherein, stop collar 2 and sleeve 1 clearance fit, be equipped with adjusting screw 22 along radial setting on the stop collar 2, adjusting screw 22 and 2 screw-thread fit of stop collar and run through stop collar 2 and nail tightly on the outer wall of sleeve 1. Stop collar 2 and sleeve 1 clearance fit be convenient for 2 head end terminal surfaces of stop collar and the regulation of the axial distance an of sleeve 1 head end terminal surface, adjust and use adjusting screw 22 nail tight sleeve 1 outer wall after targetting in place, make sleeve 1 and 2 axial positioning of stop collar, sleeve 1 and 2 circumference location of stop collar are convenient simple, and 2 head end terminal surfaces of stop collar and the axial distance a of 1 head end terminal surface of sleeve are adjusted conveniently.
The outer wall of the sleeve 1 is in plane contact with the adjusting screw 2, the axial positioning reliability of the sleeve 1 and the limiting sleeve 2 is improved, the inner wall of the sleeve 1 is in a hexagon socket shape matched with the head of the bolt to be fastened 100, and the sleeve 1 and the head of the bolt to be fastened 100 are convenient to position in the circumferential direction quickly.
The anti-loosening magnet attracted with the head of the bolt 100 to be fastened is arranged in the sleeve 1, so that the head of the bolt 100 to be fastened is prevented from being separated from the sleeve 1, and the structural reliability is improved.
The present invention also protects a bolt fastening method of fastening a bolt 100 to be fastened into an equipment screw hole, characterized by comprising the steps of:
pre-fastening: the bolt 100 to be fastened is arranged in the bolt fastening limiting device, the bolt 100 to be fastened is pre-fastened by the bolt fastening limiting device, and the length of the screw rod of the bolt 100 to be fastened screwed into the screw hole of the equipment is limited to be smaller than the length of the screw rod of the bolt 100 to be fastened;
manual fastening: and after pre-fastening, continuously fastening the bolt 100 to be fastened by adopting a manual torque wrench until the fastening torque of the bolt 100 to be fastened reaches the torque range required by the process.
Firstly, fastening and limiting a bolt to be fastened through pre-fastening, so that the length of a screw rod of the bolt 100 to be fastened screwed into a screw hole of equipment is limited to be smaller than the length of the screw rod of the bolt 100 to be fastened, when the head of the bolt 100 to be fastened is separated from a sleeve, the head of the bolt 100 to be fastened enters a limiting sleeve 2, and a part of the screw rod is not fastened in place in the limiting sleeve, then the bolt to be fastened is fastened in place by manually fastening the bolt 100 by using a manual torque wrench according to the process requirement of the fastening torque of the bolt 100 to be fastened, and a part of the screw rod is reserved after pre-fastening for manual fastening, so that the fastening torque of the bolt can reach the torque range of the process requirement, the bolt can be ensured not to be over-twisted, the problem that the bolt is over-twisted due to improper operation in the bolt fastening process of a pneumatic tool or an electric tool and the like is solved, and the, The defects of high labor intensity and high purchasing and maintaining cost of the electrodynamic torque wrench are overcome, the efficiency, reliability, practicability and safety of bolt fastening are improved, the potential quality hazard that a bolt is knocked to be dead in the operation process is avoided, and the device is economical and practical.
Wherein the pre-fastening step specifically comprises the following steps:
firstly, according to the fastening torque process requirement of the bolt 100 to be fastened, adjusting the axial distance a between the end surface of the head end of the limiting sleeve 2 and the end surface of the head end of the sleeve 1, so that the difference value between the axial distance a between the end surface of the head end of the limiting sleeve 2 and the end surface of the head end of the sleeve 1 and the thickness d of the head of the bolt 100 to be fastened is equal to the length of the bolt 100 to be fastened extending out of a device screw hole after pre-fastening;
then, the bolt 100 to be fastened is installed on the bolt fastening limiting device in a matching mode, and the tail end of the sleeve 1 is connected with a power tool;
and then, the end part of the screw rod of the bolt 100 to be fastened is in coaxial butt joint with the equipment screw hole, the power tool is started to enable the sleeve 1 to drive the bolt 100 to be fastened to rotate and be screwed into the equipment screw hole, the bolt fastening limiting device and the bolt 100 to be fastened move axially synchronously until the end face of the head end of the limiting sleeve 2 abuts against the outer plane of the equipment screw hole and the head of the bolt 100 to be fastened is separated from the sleeve 1.
The tail end of the sleeve 1 is connected with an electric or pneumatic power tool to provide power for the rotation of the sleeve 1, when the bolt 100 to be fastened is in butt joint with a device screw hole and screwed into the device screw hole, along with the axial movement of the bolt 100 to be fastened in a deep and screw-fit manner, in order to prevent the head of the bolt 100 to be fastened from being separated from the sleeve 1 before the head of the stop collar 2 is in contact with the outer plane of the device screw hole, the sleeve 1 and the stop collar 2 are pushed to move synchronously in the axial movement process of the bolt 100 to be fastened, the axial movement speed of the sleeve 1 and the stop collar 2 is greater than or equal to the axial movement speed of the bolt 100 to be fastened, the head of the bolt 100 to be fastened is prevented from being separated from the sleeve 1 before the head of the stop collar 2 is in contact with the outer plane of the device screw hole, so as to ensure.
The process that the end face of the head end of the limiting sleeve 2 abuts against the outer plane of the equipment screw hole and the head of the bolt 100 to be fastened abuts against the outer plane of the equipment screw hole when the bolt 100 to be fastened is gradually screwed into the equipment screw hole means that the end face of the head end of the limiting sleeve 2 abuts against the outer plane of the equipment screw hole, so that the bolt fastening limiting device cannot axially move any more, the bolt 100 to be fastened continues to be screwed into the equipment screw hole, the head of the bolt 100 to be fastened moves in the sleeve 1 along the axial direction until the head of the bolt 100 to be fastened is separated from the sleeve 1 and enters the limiting sleeve 2, and at the moment, the power tool cannot continue to drive the bolt 100 to be fastened to rotate any more, and the bolt 100. As shown in a of fig. 5, when the end surface of the head end of the position-limiting sleeve 2 abuts against the outer plane of the equipment screw hole, the axial movement of the sleeve 1 and the position-limiting sleeve 2 is limited, and the axial movement cannot be performed any more, and the power tool continues to drive the sleeve 1 to rotate, so that the bolt 100 to be fastened continues to be screwed in, the head of the bolt 100 to be fastened makes an axial movement in the sleeve 1 until the bolt 100 to be fastened is separated from the sleeve 1, the rotation of the sleeve 1 cannot drive the bolt 100 to be fastened to rotate, and the bolt 100 to be fastened completes the pre-fastening, as shown in B of fig. 5, a part of screws of the bolt 100 to be fastened still remain in the position-limiting sleeve and are not completely fastened to the equipment screw hole, and then the bolt fastening position-limiting device is removed, and.
If the bolt 100 to be fastened is sleeved with the gasket, the thickness d of the head of the bolt 100 to be fastened is the sum of the axial thickness of the head of the bolt 100 to be fastened and the thickness of the gasket. That is, when the head of the bolt 100 to be fastened is separated from the sleeve 1, the gasket is not stressed, and subsequent manual fastening is required to stress and compress the gasket, so that the bolt driving the gasket is also applicable to the above bolt fastening method.
The technical solutions of the embodiments of the present invention are fully described above with reference to the accompanying drawings, and it should be noted that the described embodiments are only some embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Claims (10)
1. Bolt-up stop device, its characterized in that: including can with treat fastening bolt (100) head circumference location fit's sleeve (1) and coaxial suit stop collar (2) on sleeve (1), sleeve (1) and stop collar (2) circumference location fit, the tail end of sleeve (1) stretches out from stop collar (2), the head end stretches into in stop collar (2), treat fastening bolt (100) the head stretch into sleeve (1) completely and with sleeve (1) circumference location fit, treat that fastening bolt (100)'s screw rod stretches out from stop collar (2) head end, stop collar (2) head end terminal surface and sleeve (1) head end terminal surface's axial distance an is greater than the head thickness d of treating fastening bolt (100).
2. The bolt-fastening limiting device according to claim 1, characterized in that: the inner wall of stop collar (2) on have boss (21), have on the outer wall of sleeve (1) and correspond complex circumference positioning groove (11) with boss (21), boss (21) stretch into circumference positioning groove (11) along the axial with stop collar (2) and sleeve (1) circumference location, the quantity of boss (21) is two, and two boss (21) symmetric distribution on the inner wall of stop collar (2).
3. The bolt-fastening limiting device according to claim 1, characterized in that: the axial distance a between the end face of the head end of the limiting sleeve (2) and the end face of the head end of the sleeve (1) is adjustable.
4. The bolt-fastening limiting device according to claim 3, characterized in that: spacing sleeve (2) and sleeve (1) clearance fit, be equipped with adjusting screw (22) along radial setting on spacing sleeve (2), adjusting screw (22) and spacing sleeve (2) screw-thread fit just run through spacing sleeve (2) and screw tightly on the outer wall of sleeve (1).
5. The bolt-fastening limiting device according to claim 4, characterized in that: the outer wall of the sleeve (1) is in plane contact with the adjusting screw (2), and the inner wall of the sleeve (1) is in a hexagon socket shape matched with the head of the bolt (100) to be fastened.
6. The bolt-fastening limiting device according to claim 1, characterized in that: and a loosening-preventing magnet attracted with the head of the bolt (100) to be fastened is arranged in the sleeve (1).
7. A bolt fastening method of fastening a bolt (100) to be fastened into an equipment screw hole, characterized by comprising the steps of:
pre-fastening: the bolt-to-be-fastened (100) is installed in the bolt-fastening position-limiting device of any one of claims 1 to 6, the bolt-to-be-fastened (100) is pre-fastened by the bolt-fastening position-limiting device, and the length of a screw rod of the bolt-to-be-fastened (100) screwed into a screw hole of equipment is limited to be smaller than the length of the screw rod of the bolt-to-be-fastened (100);
manual fastening: and after pre-fastening, continuously fastening the bolt (100) to be fastened by adopting a manual torque wrench until the fastening torque of the bolt (100) to be fastened reaches the torque range required by the process.
8. The bolt fastening method according to claim 7, wherein the pre-fastening step is specifically:
firstly, according to the fastening torque process requirement of a bolt (100) to be fastened, adjusting the axial distance a between the end surface of the head end of the limiting sleeve (2) and the end surface of the head end of the sleeve (1), so that the difference between the axial distance a between the end surface of the head end of the limiting sleeve (2) and the end surface of the head end of the sleeve (1) and the thickness d of the head of the bolt (100) to be fastened is equal to the length of the pre-fastened bolt (100) to extend out of a screw hole of equipment;
then, a bolt (100) to be fastened is installed on the bolt fastening limiting device in a matching mode, and the tail end of the sleeve (1) is connected with a power tool;
and then, the end part of the screw rod of the bolt (100) to be fastened is coaxially butted with the equipment screw hole, the power tool is started to enable the sleeve (1) to drive the bolt (100) to be fastened to rotate and screw into the equipment screw hole, the bolt fastening limiting device and the bolt (100) to be fastened move axially synchronously until the end surface of the head end of the limiting sleeve (2) is abutted to the outer plane of the equipment screw hole and the head part of the bolt (100) to be fastened is separated from the sleeve (1).
9. The bolt fastening method according to claim 8, wherein: the process that the end face of the head end of the limiting sleeve (2) abuts against the outer plane of the equipment screw hole and the head of the bolt (100) to be fastened is separated from the sleeve (1) until the end face of the head end of the limiting sleeve (2) to be fastened abuts against the outer plane of the equipment screw hole in the process that the bolt (100) to be fastened is gradually screwed into the equipment screw hole is achieved, the bolt fastening limiting device cannot axially move any more, the bolt (100) to be fastened continues to be screwed into the equipment screw hole, the head of the bolt (100) to be fastened moves in the sleeve (1) along the axial direction until the head of the bolt (100) to be fastened is separated from the sleeve (1) and enters the limiting sleeve (2), at the moment, the power tool cannot continue to drive the bolt (100) to be fastened to rotate, and the bolt (100) to be.
10. The bolt fastening method according to claim 8, wherein: if the bolt (100) to be fastened is sleeved with the gasket, the head thickness d of the bolt (100) to be fastened is the sum of the axial thickness of the head of the bolt (100) to be fastened and the thickness of the gasket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011210632.2A CN112338853A (en) | 2020-11-03 | 2020-11-03 | Bolt fastening limiting device and bolt fastening method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011210632.2A CN112338853A (en) | 2020-11-03 | 2020-11-03 | Bolt fastening limiting device and bolt fastening method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112338853A true CN112338853A (en) | 2021-02-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011210632.2A Pending CN112338853A (en) | 2020-11-03 | 2020-11-03 | Bolt fastening limiting device and bolt fastening method |
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| CN (1) | CN112338853A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114658299A (en) * | 2022-03-10 | 2022-06-24 | 岚图汽车科技有限公司 | Automobile tail door lock catch assembly structure and installation method |
-
2020
- 2020-11-03 CN CN202011210632.2A patent/CN112338853A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114658299A (en) * | 2022-03-10 | 2022-06-24 | 岚图汽车科技有限公司 | Automobile tail door lock catch assembly structure and installation method |
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