阅读说明：本技术 消除配合间隙的插销 (Bolt for eliminating fit clearance ) 是由 尹华 王君君 于 2020-11-30 设计创作，主要内容包括：本发明公开了一种消除配合间隙的插销及传动结构,包括套管(4),套管(4)前端中安装有可沿套管内壁滑动的销子(2),销子(2)后端轴向连接推杆,推杆从套管(4)后端穿出,销子(2)和套管(4)后端面之间安装弹簧(3),套管(4)前端的侧壁上设有垂直于轴向的预紧螺钉(1),将本插销安装在主动轴和从动轴之间可以实现无间隙传动。本发明通过将插销的插入尖端改进为锥端,可消除插销与固定孔的间隙；通过在套管4上装配预紧螺钉,可消除插销本身的间隙。(The invention discloses a bolt for eliminating a fit clearance and a transmission structure, which comprise a sleeve (4), wherein a pin (2) capable of sliding along the inner wall of the sleeve is arranged in the front end of the sleeve (4), the rear end of the pin (2) is axially connected with a push rod, the push rod penetrates out from the rear end of the sleeve (4), a spring (3) is arranged between the pin (2) and the rear end surface of the sleeve (4), a pre-tightening screw (1) vertical to the axial direction is arranged on the side wall of the front end of the sleeve (4), and the bolt is arranged between a driving shaft and a driven shaft to realize zero-clearance transmission. According to the invention, the insertion tip of the bolt is improved into the taper end, so that the gap between the bolt and the fixing hole can be eliminated; by fitting a pre-tightening screw on the sleeve 4, the play of the bolt itself can be eliminated.)

1. A bolt for eliminating fit clearance comprises a sleeve (4), and is characterized in that: the front end of the sleeve (4) is provided with a pin (2) capable of sliding along the inner wall of the sleeve, the rear end of the pin (2) is axially connected with a push rod, the push rod penetrates out of the rear end of the sleeve (4), a spring (3) is arranged between the pin (2) and the rear end face of the sleeve (4), and the side wall of the front end of the sleeve (4) is provided with a pre-tightening screw (1) perpendicular to the axial direction.

2. The fit-clearance removing latch according to claim 1, wherein: the front end of the pin (2) is provided with a section of tapered section.

3. The fit-clearance removing latch according to claim 2, wherein: and a pull ring (6) is arranged at the tail end of the push rod.

4. The fit-clearance removing latch according to claim 3, wherein: four limit grooves with 90-degree intervals are formed in the outer wall of the rear end of the sleeve (4), a cross-shaped limit pin (5) is installed on a push rod of the pin (2), and the radial length of the limit pin (5) is larger than the inner diameter of the rear end of the sleeve (4).

5. The fit-clearance removing latch according to claim 4, wherein: the middle part of the sleeve (4) is provided with a flange.

6. A transmission structure for eliminating fit clearance, comprising a driving shaft, a driven shaft and the latch of claim 5, characterized in that: the driving shaft is sleeved on the driven shaft in an empty mode through a bearing, the sleeve (4) is installed on the installation plate on one side of the driving shaft through a flange plate of the sleeve, a connecting plate is arranged on the side face of the driven shaft, and a fixing hole is formed in the position, right opposite to the sleeve (4), of the connecting plate.

7. The fit-clearance eliminating transmission structure according to claim 6, wherein: the pin (2) in the sleeve (4) can extend out and be inserted into the fixing hole.

Technical Field

The invention relates to a bolt for coupling a driving shaft and a driven shaft.

Background

There is a transmission structure of driven shaft of driving shaft, the driving shaft is empty to overlap on the driven shaft through the bearing, when needing both transmissions, utilize the bolt to couple together the driving plate on both outer circumferences and can realize the transmission, the problem that this structure exists is to have the fit clearance (I and II department in figure 1), the clearance of pin and sleeve pipe cooperation in the bolt at first, secondly is the fit clearance between the hole on the pin stretches out back and the driving plate, when needing high accuracy transmission, need to think the way and eliminate these two fit clearances.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: to the problem that there is fit clearance when adopting bolt connection driving shaft and driven shaft, provide a bolt that can eliminate fit clearance.

The technical scheme of the invention is as follows: a pin capable of eliminating fit clearance comprises a sleeve, a pin capable of sliding along the inner wall of the sleeve is mounted in the front end of the sleeve, the rear end of the pin is axially connected with a push rod, the push rod penetrates out of the rear end of the sleeve, a spring is mounted between the pin and the rear end face of the sleeve, and a pre-tightening screw perpendicular to the axial direction is arranged on the side wall of the front end of the sleeve.

The front end of the pin is provided with a section of tapered section.

And a pull ring is arranged at the tail end of the push rod.

Four limit grooves with 90-degree intervals are formed in the outer wall of the rear end of the sleeve, a cross-shaped limit pin is installed on a push rod of the pin, and the radial length of the limit pin is larger than the inner diameter of the rear end of the sleeve 4.

The middle part of the sleeve is provided with a flange.

The utility model provides an eliminate transmission structure of fit clearance, includes above-mentioned bolt, driving shaft, driven shaft, and the driving shaft passes through bearing empty cover on the driven shaft, and the sleeve pipe is installed on the mounting panel of driving shaft one side through its ring flange, has the connecting plate to the side of the driven shaft, has the fixed orifices just to sheathed tube position on the connecting plate.

The pins in the sleeve can extend out of and be inserted into the fixing holes.

The invention has the beneficial effects that:

according to the invention, the insertion tip of the bolt is improved into the taper end, so that the gap between the bolt and the fixing hole can be eliminated; by fitting a pre-tightening screw on the sleeve 4, the play of the bolt itself can be eliminated.

Drawings

FIG. 1 is a schematic view of a pin fit clearance.

Fig. 2 is a schematic structural view of the plug of the present invention.

Fig. 3 is a left side view of fig. 2.

FIG. 4 is a schematic diagram of the transmission of the present invention prior to disengagement.

Fig. 5 is a schematic diagram of the transmission structure of the present invention after combination.

Detailed Description

A bolt for eliminating a fit clearance comprises a sleeve 4, a pin 2 capable of sliding along the inner wall of the sleeve is installed in the front end of the sleeve 4, the rear end of the pin 2 is axially connected with a push rod, the push rod penetrates out of the rear end of the sleeve 4, a spring 3 is installed between the pin 2 and the rear end face of the sleeve 4, and a pre-tightening screw 1 perpendicular to the axial direction is arranged on the side wall of the front end of the sleeve 4. The head of the pre-tightening screw 1 is designed by knurling, so that the man-machine engineering for manual tightening is met, and the pre-tightening screw is mainly used for eliminating gaps of the bolt. The pin 2 adopts the design of preceding cone end, satisfies automatic pretension usefulness when bolt and fixed orifices cooperation, can eliminate the clearance between bolt and the fixed orifices automatically. The design of spring 3 satisfies the requirement of spring design manual, designs according to the required pretightning force of bolt for the pretensioning of awl end is used when the bolt is used. The design of sleeve pipe 4 satisfies the use operating mode usefulness of bolt, and the sleeve pipe 4 upper band mount pad for with the assembly of driving shaft 20, satisfy the assembly usefulness of pin 2, spring and spacer pin simultaneously. The tail end of the push rod is provided with a pull ring 6. The design of the pull ring 6 meets the human engineering of finger use and is used for plugging and unplugging the plug pin.

The rear end face of the sleeve 4 is provided with a limit pin 5, and the center of the limit pin 5 is provided with a hole for the push rod to penetrate out.

The middle part of the sleeve 4 is provided with a flange.

A transmission structure for eliminating fit clearance comprises the bolt, a driving shaft 20 and a driven shaft 10, wherein the driving shaft 20 is sleeved on the driven shaft 10 in a hollow mode through a bearing, a sleeve 4 is installed on an installation plate on one side of the driving shaft 20 through a flange plate of the sleeve, a connecting plate is arranged on the side face of the driven shaft 10, and a fixing hole is formed in the position, right opposite to the sleeve 4, of the connecting plate. The pin 2 in the sleeve 4 can be extended out and inserted into the fixing hole.

The working principle is as follows:

the bolt is fastened on the driving shaft 20 through the screw hole of the flange of the sleeve 4.

When the bolt was in unoperated state, the spacer pin was in the rear end position of ring flange, and the bolt during operation need rotate 90 to the taper pin, lets the spacer pin rotate 90 promptly, lets in its spacer pin spout of rotatory to the ring flange to the taper pin can stretch out from in the ring flange, effectively reaches the fixed orifices.

The position of the fixed limit pin on the rear end surface of the flange plate is in a cross shape, namely a 90-degree included angle is formed, wherein the depth of the groove at the limit position is consistent with the radius of the limit pin, and the 90-degree direction is a sliding groove, and the depth of the sliding groove ensures that the taper pin can reach the inside of the fixed hole. Therefore, when the taper pin fixing device works, the taper pin needs to be rotated by 90 degrees to pass through the pull ring 6, the taper pin is rotated by 90 degrees, the pin 2 is inserted into the fixing hole under the action of the spring force, the pin is automatically preset with the fixing hole under the action of the spring force, and a gap between the pin 2 and the fixing hole (namely a gap between the driving shaft and the driven shaft) is eliminated.

By tightening the pre-tightening screw 1, the play of the bolt itself (i.e. the play between the pin 2 and the sleeve 4) is eliminated.

Through the operation, the movement gap between the driving shaft and the driven shaft is eliminated during working, and the use requirement is met.

Under other use conditions, if the clearance does not need to be eliminated, the bolt is directly inserted into the fixing hole, so that the use under various conditions is met.

The bolt has the following technical effects:

1. the common working conditions of other bolts are met;

2. the high-precision transmission gapless use is met;

3. double clearance elimination under the use condition is met;

4. the ergonomic requirements of the bolt are met;

5. the assembly is simple;

6. simple structure and low manufacturing cost.