CN105370763B - Driver - Google Patents

Abstract

The invention discloses a kind of driver, the driver includes reducing bearing block, transmission body, connector；Described transmission body one end radially extends to form driving section, and the other end is provided with Check Division；Check core is provided on the Check Division；The check core is used for check with the cooperation of reducing bearing block；Check core both sides at least side is provided with bearing；The bearing inner race coordinates with Check Division；The bearing outer ring coordinates with reducing bearing block；Described connector one end radially extends to form interconnecting piece, and the interconnecting piece is connect with driving section is used for passing power torque.And check core both ends can install two sets of bearings, and check core is connect by key with transmission body, it, only need to be by check core reverse-fitting when rotation direction need to change using the structure.Using the driver, the function that two axis of connection transmit torque and inversely brake can be realized, and support revolution can be played the role of, and mounting structure is compact.

Description

transmission

technical field

The invention relates to the field of mechanical power transmission, in particular to a transmission.

Background technique

Known: commonly used transmissions include shaft couplings, backstops and bearing housings, etc.; traditional couplings can only realize power torque transmission between transmission shafts. The main function of the backstop is to limit the rotation of the transmission shaft in one direction. The main function of the bearing housing is to provide support for the drive shaft.

Among them, the Chinese patent No. 201120428193.2, "A Shaft Coupling" discloses a shaft coupling, which includes a shaft coupling core, a transmission sleeve and a backstop seat. The two ends are respectively formed as a transmission part and a backstop part along the radial direction of the coupling core, and the transmission sleeve is installed in cooperation with the transmission part to transmit power torque, and the backstop seat is connected to the backstop The part fits and installs for backstop. The utility model can realize the functions of transmission and backstop at the same time by setting the transmission part and the backstop part on the core body of the shaft coupling. In the belt conveyor with double driving devices, when one driving device is overhauled or maintained, the transmission work of the belt conveyor can be resumed in a short time by installing the coupling of the utility model, which improves the working efficiency .

Although the above-mentioned shaft coupling realizes the power torque transmission and backstop of the transmission shaft, it cannot provide support for the transmission shaft. Therefore, bearing seats still need to be provided at both ends of the transmission shaft to support the transmission shaft.

Many working machines in enterprises are only allowed to run in one direction and at the same time realize the transmission of the power torque of the transmission shaft and the support of the transmission shaft. In order to solve the above problems, couplings, backstops, and bearing seats are often installed on the working machines. And other equipment, not only results in a large number of equipment, cost increases, but also the installation structure of the equipment is not compact, which has limitations in some narrow places.

Contents of the invention

The technical problem to be solved by the present invention is to provide a transmission, which can not only realize the functions of connecting two shafts to transmit torque and reverse braking, but also play the role of supporting rotation, and has a compact installation structure.

The transmission used by the present invention to solve its technical problems includes a variable diameter bearing seat, a transmission body, and a connecting body; one end of the transmission body extends radially to form a transmission part, and the other end is provided with a backstop; the backstop A backstop core is arranged on the top; the backstop core cooperates with the variable diameter bearing seat for backstop;

At least one side of the two sides of the backstop core is provided with a bearing; the inner ring of the bearing is matched with the backstop; the outer ring of the bearing is matched with the variable diameter bearing seat; one end of the connecting body is connected with the transmission part for transmission power torque.

Further, the backstop is detachably connected to the transmission body; both sides of the backstop core are provided with bearings; the inner ring of the bearing cooperates with the backstop; the outer ring of the bearing cooperates with the variable diameter bearing seat .

Further, the backstop has an inner cavity, and one end of the transmission body matches the inner cavity of the backstop; the backstop is sleeved on the transmission body and fixed radially.

Further, the inner cavity of the backstop part is a circular through hole, and a flat key is arranged between the circular through hole of the backstop part and the transmission body, and the backstop part is radially fixed by the flat key.

Further, both sides of the variable-diameter bearing seat are provided with end caps; the end caps are sleeved on the transmission body, and are respectively sealed and matched with the transmission body and the variable-diameter bearing seat; the variable-diameter bearing seat is provided with Lubricant passage that supplies lubricant to bearings and backstops.

Further, a retaining ring is provided between the bearing and the backstop; an oil hole is provided on the retaining ring.

Further, the end surface of the retaining ring close to the bearing is provided with an outer ring boss and an inner ring boss, an annular groove is formed between the outer ring boss and the inner ring boss, and the outer ring The boss is against the outer ring of the bearing, and the inner ring is against the inner ring of the bearing.

Further, the transmission part is provided with through holes extending axially along the transmission body, and the through holes are evenly distributed along the circumference of the transmission part, and elastic pins for transmission are arranged in the through holes; the connection One end of the body extends radially to form a connection part, which is connected to the transmission part for transmitting power torque; the connection part is provided with a pin hole corresponding to the through hole on the transmission part; the elastic pin extends to in the pin hole.

Further, both the transmission part and the connection part are provided with retaining rings for limiting the position of the elastic pins; the retaining rings are respectively fixed on the transmission part and the connection part by fasteners.

Specifically, the fasteners are bolts.

Further, both the transmission body and the connection body have inner cavities for connecting the transmission shafts, and key grooves are arranged in the inner cavities of the transmission body and the connection body.

The beneficial effects of the present invention are: the transmission of the present invention is provided with a backstop part and a transmission part on the transmission body, the backstop is realized through the cooperation of the backstop part and the variable diameter bearing seat, and the backstop is realized through the connection of the transmission part and the connecting part. Power transmission; at the same time, a support bearing is set between the variable diameter bearing seat and the transmission body, so as to realize the support for the transmission shaft. When the transmission is assembled with working machines such as driving drums and sprockets, the transmission shaft of the working machine only needs to use a commonly used bearing seat at one end and the transmission at the other end, which can realize torque transmission and reverse rotation between two shafts. The function of braking can also play the role of supporting the rotation, and the installation structure is compact. Therefore, a set of equipment for the transmission described in the present invention can realize the three functions of the original shaft coupling, backstop, and bearing seat, which not only saves equipment costs, but also can be installed in a relatively narrow space due to its compact installation structure. used in the space. At the same time, two sets of bearings can be installed at both ends of the backstop core, and the backstop part is detachably connected with the transmission body, so that when the rotation direction needs to be changed, it is only necessary to reversely assemble the backstop core.

Description of drawings

Fig. 1 is a cross-sectional view of a transmission in Embodiment 1 of the present invention;

Fig. 2 is A-A sectional view of Fig. 1;

Fig. 3 is a cross-sectional view of the transmission in Embodiment 2 of the present invention;

Fig. 4 is the B-B sectional view of Fig. 3;

Fig. 5 is a structural schematic diagram of the application of the transmission on the working machine in Embodiment 1 of the present invention;

Fig. 6 is a schematic front view of the retaining ring in the present invention;

Fig. 7 is a schematic cross-sectional view of C-C of Fig. 6;

As shown in the figure: 1-power machine, 2-driver, 3-working machine, 4-bearing seat, 10-variable diameter bearing seat, 11-power machine output shaft, 12-connecting body, 121-connecting part, 13-elasticity Pin, 14-transmission body, 141-transmission part, 142-backstop part, 15-screw; 16-bearing, 17-end cover, 18-working machine end shaft, 19-stop ring, 191-outer ring convex Platform, 192-inner ring boss, 193-annular groove, 20-retaining ring, 21, 22, 23-flat key, 31-backstop core, 32-spring pretensioner, 33-backstop rolling body .

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

As shown in Figures 1 to 4, the transmission according to the present invention includes a variable diameter bearing seat 10, a transmission body 14, and a connecting body 12; one end of the transmission body 14 extends radially to form a transmission part 141, and the other end is set There is a backstop part 142; the backstop part 142 is provided with a backstop core 31; the backstop core 31 cooperates with the variable diameter bearing seat 10 for backstop;

Bearings 16 are provided on at least one side of both sides of the backstop core 31; the inner ring of the bearing 16 cooperates with the backstop portion 142; the outer ring of the bearing 16 cooperates with the variable diameter bearing seat 10; one end of the connecting body 12 It is connected with the transmission part 141 for transmitting power torque.

One end of the transmission body 14 extends radially to form a transmission part 141, and the other end is provided with a backstop part 142; wherein the "backstop part 142" can be integrally formed with the transmission body 14, as shown in Figure 1, the backstop The part 142 can also be fixedly installed on one end of the transmission body 14 as a separate whole, as shown in FIG. 2 .

In the process of application, at first the connecting body 12 and the transmission body 14 are respectively connected with two transmission shafts that need to be transmitted, the connection body 12 is connected with the transmission shaft of the power machine, and the transmission body 14 is connected with the transmission shaft of the working machine connect. During the working process, the transmission shaft of the power machine transmits power to the connection body 12, the connection body 12 transmits the power torque to the transmission body 14, and the transmission body 14 transmits the power torque to the transmission shaft of the working machine.

Simultaneously because described transmission body 14 one end extends radially transmission part 141, and the other end is provided with backstop part 142; Described backstop part 142 is provided with backstop core body 31; Diameter bearing housing 10 is used for backstop.

The cooperation between the backstop core 31 and the reducing bearing seat 10 can adopt the cooperation method of a backstop, and the backstop can adopt the core of a roller backstop, a contact backstop and a non-contact backstop. Various forms of body composition.

Therefore, through the cooperation of the backstop core 31 and the variable diameter bearing seat 10 , it is possible to limit the rotation of the transmission shaft to only one direction.

Again, since at least one side of the two sides of the backstop core 31 is provided with a bearing 16; the inner ring of the bearing 16 cooperates with the backstop 142; the outer ring of the bearing 16 cooperates with the variable diameter bearing seat 10; therefore, through the bearing 16 can transmit the radial force received by the transmission body 14 to the variable diameter bearing seat 10, so as to realize the rotary support for the transmission shaft. At the same time, the backstop core 31 can be detachably connected with the transmission body 12, and two sets of bearings can be installed at both ends of the backstop core 31, and the backstop core 31 can be connected with the transmission body 12 by a key; at this time, when the direction of rotation needs to be changed , just assemble the backstop core in reverse.

To sum up, the transmission of the present invention is provided with a backstop 142 and a transmission part 141 on the transmission body 14, and the backstop is realized through the cooperation of the backstop 142 and the variable diameter bearing housing 10, and the connection between the transmission part 141 and The connection of body 12 realizes power transmission. At the same time, a support bearing 16 is provided between the variable diameter bearing seat 10 and the transmission body 14, so as to support the transmission shaft. Therefore, a set of equipment for the transmission described in the present invention can realize the three functions of the original shaft coupling, backstop, and bearing seat, which can not only save equipment costs, but also be used in relatively narrow areas because of its compact installation structure. use in space.

In order to prevent the axial movement of the transmission shaft and improve the support strength; further as shown in Figure 3, the backstop 142 is detachably connected to the transmission body 14; both sides of the backstop core 31 are provided with bearings 16 ; The inner ring of the bearing 16 cooperates with the backstop 142; the outer ring of the bearing 16 cooperates with the variable diameter bearing seat 10. The support strength can be improved by disposing the bearings 16 on both sides of the backstop core 31 . The bearing 16 can be a deep groove ball bearing or a roller bearing.

Since the backstop core 31 is detachably connected to the transmission body 12, two sets of bearings can be installed at both ends of the backstop core 31, and the backstop core 31 can be connected to the transmission body 12 through a key. Therefore, when the rotation direction needs to be changed, it is only necessary to reversely assemble the backstop core.

The backstop 142 and the transmission body 14 can be detachably connected through a flange. In order to facilitate the installation of the backstop 142 on the transmission body 14 and simplify the structure, further, the backstop 142 has an inner cavity, so One end of the transmission body 14 is matched with the inner cavity of the backstop part 142; the backstop part 142 is sleeved on the transmission body 14 and fixed radially.

Specifically, the inner cavity of the backstop portion 142 is a circular through hole, and a flat key 23 is arranged between the circular through hole of the backstop portion 142 and the transmission body 14, and the backstop portion 142 passes through the flat key. The keys 23 are fixed radially. The backstop 142 is radially fixed on the transmission body 14 through the flat key 23; the structure can be simplified and the installation is convenient.

In order to realize the lubrication of the bearing 16 and the backstop 142 and prolong the service life; further, the two sides of the variable diameter bearing seat 10 are provided with end caps 17; the end caps 17 are sleeved on the transmission body 14, and respectively It is sealingly matched with the transmission body 14 and the variable diameter bearing seat 10 ; the variable diameter bearing seat 10 is provided with a lubricating oil channel for supplying lubricating oil to the bearing 16 and the backstop 142 . The lubricating oil is provided for the bearing 16 and the check portion 142 through the lubricating oil passage, thereby reducing wear and prolonging service life.

Further, a retaining ring 19 is provided between the bearing 16 and the backstop core 31 ; an oil hole is provided on the retaining ring 19 . The function of setting the retaining ring 19 is to isolate the backstop portion 142 from the bearing 16 to form respective cavities, so as to avoid the damage and mutual influence of the backstop rolling element 33 and the rolling element of the bearing 16 .

Further, as shown in Figure 1, Figure 3, Figure 6 and Figure 7, the end surface of the retaining ring 19 near the bearing 16 is provided with an outer ring boss 191 and an inner ring boss 192, the outer ring boss 192 An annular groove 193 is formed between the platform 191 and the inner ring boss 192 , the outer ring boss 191 is against the outer ring of the bearing 16 , and the inner ring boss 192 is against the inner ring of the bearing 16 . In this way, the rolling elements of the bearing 16 are prevented from contacting the retaining ring 19 , and the retaining ring 19 also plays a role in preventing the backstop rolling elements 33 from moving to the bearing 16 .

The connection part 121 and the transmission part 141 are driven and matched, and various connection methods can be adopted, such as connection by a transmission sleeve, a diaphragm coupling, a gear coupling, and any other existing common coupling halves to form any coupling. a combination. In order to simplify the structure and facilitate installation, it also has a certain overload protection capability. Preferably, the transmission part 141 is provided with through holes extending axially along the transmission body 14, and the through holes are evenly distributed along the circumference of the transmission part 141, and elastic pins 13 for transmission are arranged in the through holes The connecting part 121 is provided with a pin hole corresponding to the through hole on the transmission part 141; the elastic pin 13 extends into the pin hole. The connection by using the elastic pin 13 can play the role of overload protection.

In order to prevent the elastic pin 13 from falling off from the pin hole and the through hole, further, the transmission part 141 and the connecting part 121 are provided with a retaining ring 20 for limiting the position of the elastic pin 13; the retaining ring 20 passes through The fasteners are respectively fixed on the transmission part 141 and the connecting part 121 . The function of the fastener is to fix the retaining ring 20, specifically, the fastener is a bolt.

In order to facilitate the connection of the transmission shaft with the transmission body 14 and the connecting body 12; Provided with a keyway.

Embodiment one

As shown in Figure 5, it is the application of the transmission 2 according to the present invention on the working machine; wherein the backstop 142 on the transmission body 14 of the transmission 2 is an integral body; specifically as shown in Figure 1 and Figure 2 shown.

As shown in Figure 1, the transmission 2 includes a variable diameter bearing seat 10, a transmission body 14, and a connecting body 12; one end of the transmission body 14 extends radially to form a transmission part 141, and the other end is provided with a backstop 142; The backstop part 142 is provided with a backstop core 31; the backstop core 31 cooperates with the variable diameter bearing seat 10 for backstop;

One side of the backstop core 31 is provided with a bearing 16; the inner ring of the bearing 16 cooperates with the backstop 142; the outer ring of the bearing 16 cooperates with the variable diameter bearing seat 10; one end of the connecting body 12 is along the diameter Extending to form a connecting portion 121 , the connecting portion 121 is connected with the transmission portion 141 for transmitting power torque.

Both sides of the backstop core 31 are provided with bearings 16 ; the inner ring of the bearing 16 cooperates with the backstop portion 142 ; the outer ring of the bearing 16 cooperates with the variable diameter bearing seat 10 .

Both sides of the variable diameter bearing seat 10 are provided with end caps 17; the end caps 17 are sleeved on the transmission body 14, and are respectively sealed and matched with the transmission body 14 and the variable diameter bearing seat 10; the variable diameter bearing seat 10 A lubricating oil passage for supplying lubricating oil to the bearing 16 and the check portion 142 is provided on the top. A retaining ring 19 is disposed between the bearing 16 and the backstop portion 142 ; an oil hole is disposed on the retaining ring 19 .

The transmission part 141 is provided with through holes extending axially along the transmission body 14, and the through holes are evenly distributed along the circumference on the transmission part 141, and elastic pins 13 for transmission are arranged in the through holes; The connecting part 121 is provided with a pin hole corresponding to the through hole on the transmission part 141; the elastic pin 13 extends into the pin hole. Both the transmission part 141 and the connection part 121 are provided with retaining rings 20 for limiting the positions of the elastic pins 13; the retaining rings 20 are respectively fixed on the transmission part 141 and the connection part 121 by fasteners. The fasteners are bolts. Both the transmission body 14 and the connection body 12 have inner cavities for connecting the transmission shafts, and the inner cavities of the transmission body 14 and the connection body 12 are both provided with key grooves.

The assembly process of the transmission 2:

As shown in Figure 1: firstly match the variable diameter bearing seat 10 with the backstop part 31, install the backstop spring pretensioner 32 during the fit, and then install the stop ring 19, the bearing 16, and the backstop rolling element 33 in sequence . Installing like this is mainly to prevent: if the bearing cavity is greater than the backstop cavity, the variable diameter bearing seat 10 will not be able to be inserted. Install the end cover 17 at last, the right side of the reducing bearing seat 10 as shown in the figure adopts the split end cover 17, and the left side can adopt the integral type end cover 17, and fasten the screw 15. After assembling the 3 halves of the working machine, cooperate with the coupling half of the power machine 1, install the elastic pin 13, and finally install the retaining ring, screw, flat washer, spring washer and other parts to complete a set of multifunctional transmission. device assembly.

As shown in Figures 1 and 5, the power machine output shaft 11 of the power machine 1 is connected to one end of the connecting body 12 of the transmission 2, and one end of the transmission body 14 of the transmission 2 is connected to one end of the working machine end shaft 18 of the working machine 3, The other end of the working machine end shaft 18 cooperates with the bearing housing 4 .

During the working process, the power machine 1 transmits power to the working machine 3 through the transmission 2, and the working machine 3 works through the obtained power. One end of the working machine end shaft 18 is supported by the bearing housing 4 , and the other end is supported by the transmission 2 . At the same time, the working machine end shaft 18 can only rotate in one direction under the action of the transmission 2 , and the transmission 2 has a backstop effect on the working machine end shaft 18 .

Embodiment two

As shown in Figure 5, it is the application of the transmission 2 of the present invention on the working machine; wherein the backstop 142 on the transmission body 14 of the transmission 2 is a combined type, and the backstop 142 is a separate The whole is fitted on the transmission body 14 and fixed radially by the flat key 23; specifically as shown in Fig. 3 and Fig. 4 .

As shown in Figure 1, the transmission 2 includes a variable diameter bearing seat 10, a transmission body 14, and a connecting body 12; one end of the transmission body 14 extends radially to form a transmission part 141, and the other end is provided with a backstop 142; The backstop part 142 is provided with a backstop core 31; the backstop core 31 cooperates with the variable diameter bearing seat 10 for backstop;

Both sides of the backstop core 31 are provided with bearings 16; the inner ring of the bearing 16 is set on the outer ring of the backstop 142; the outer ring of the bearing 16 cooperates with the variable diameter bearing seat 10; the connecting body One end of 12 extends radially to form a connecting portion 121, and the connecting portion 121 is connected with the transmission portion 141 for transmitting power torque.

Both sides of the variable diameter bearing seat 10 are provided with end caps 17; the end caps 17 are sleeved on the transmission body 14, and are respectively sealed and matched with the transmission body 14 and the variable diameter bearing seat 10; the variable diameter bearing seat 10 A lubricating oil passage for supplying lubricating oil to the bearing 16 and the check portion 142 is provided on the top. A retaining ring 19 is disposed between the bearing 16 and the backstop portion 142 ; an oil hole is disposed on the retaining ring 19 .

The transmission part 141 is provided with through holes extending axially along the transmission body 14, and the through holes are evenly distributed along the circumference on the transmission part 141, and elastic pins 13 for transmission are arranged in the through holes; The connecting part 121 is provided with a pin hole corresponding to the through hole on the transmission part 141; the elastic pin 13 extends into the pin hole. Both the transmission part 141 and the connection part 121 are provided with retaining rings 20 for limiting the positions of the elastic pins 13; the retaining rings 20 are respectively fixed on the transmission part 141 and the connection part 121 by fasteners. The fasteners are bolts. Both the transmission body 14 and the connection body 12 have inner cavities for connecting the transmission shafts, and the inner cavities of the transmission body 14 and the connection body 12 are both provided with key grooves.

The assembly process of the transmission 2:

As shown in Figure 3: install a bearing 16 on the right side of the backstop core 31 on the transmission body 14, install the spring pretensioner 32, the backstop rolling element 33 and the variable diameter bearing seat 10 of the backstop , and then install another bearing 16 on the left side of the backstop core 31 on the transmission body 14; Finally, the backstop portion 142 is connected with the transmission body 14 through the flat key 23 . After assembling the half body of the working machine, and matching it with the coupling half body 12 of the power machine, install the elastic pin 13, and finally install the retaining ring, screw, flat washer, spring washer and other parts to complete a set of multifunctional transmission. device assembly.

As shown in Figures 1 and 5, the power machine output shaft 11 of the power machine 1 is connected to one end of the connecting body 12 of the transmission 2, and one end of the transmission body 14 of the transmission 2 is connected to one end of the working machine end shaft 18 of the working machine 3, The other end of the working machine end shaft 18 cooperates with the bearing housing 4 .

During the working process, the power machine 1 transmits power to the working machine 3 through the transmission 2, and the working machine 3 works through the obtained power. One end of the working machine end shaft 18 is supported by the bearing housing 4 , and the other end is supported by the transmission 2 . At the same time, the working machine end shaft 18 can only rotate in one direction under the action of the transmission 2 , and the transmission 2 has a backstop effect on the working machine end shaft 18 .

Since the backstop 142 on the transmission body 14 of the transmission 2 in the second embodiment is a combined type, the backstop 142 is a separate whole, and is sleeved on the transmission body 14, and is radially fixed by the flat key 23; therefore , when the transmission body 14 or the backstop portion 142 is damaged, it does not need to be replaced as a whole, which is easy to maintain and can reduce the maintenance cost. At the same time, bearings 16 are arranged on both sides of the backstop core 31, thereby improving the support strength of the variable diameter bearing housing 10 to the transmission shaft; and when the backstop 142 is assembled in reverse, the rotation direction of the working machine can be changed.

Claims (7)

1. driver, including reducing bearing block (10), transmission body (14), connector (12)；Described transmission body (14) one end is along diameter To driving section (141) is extended to form, the other end is provided with Check Division (142)；It is provided with check core on the Check Division (142) (31)；The check core (31) is used for check with reducing bearing block (10) cooperation；Described connector (12) one end and driving section (141) connection is used for passing power torque, it is characterised in that：The Check Division (142) is detachably connected with transmission body (14)；Institute It states check core (31) both sides and is both provided with bearing (16)；Bearing (16) inner ring coordinates with Check Division (142)；The bearing (16) outer ring coordinates with reducing bearing block (10)；Reducing bearing block (10) both sides are both provided with end cap (17)；The end cap (17) it is sleeved on the Check Division (142) of transmission body (14), and coordinates with Check Division (142) and reducing bearing block (10) sealing； The oil leab for providing lubricating oil to bearing (16) and Check Division (142) is provided on the reducing bearing block (10)；Institute It states and is provided with baffle ring (19) between bearing (16) and Check Division (142)；It is provided with oil-through-hole on the baffle ring (19).

2. driver as described in claim 1, it is characterised in that：The Check Division (142) has inner cavity, the transmission body (14) one end is matched with the inner cavity of Check Division (142)；The Check Division (142) is sleeved in transmission body (14), and radial solid It is fixed.

3. driver as claimed in claim 2, it is characterised in that：The inner cavity that the Check Division (142) has is circular through hole, Flat key (23) is provided between the circular through hole and transmission body (14) of the Check Division (142), the Check Division (142) passes through flat Key (23) is radially fixed.

4. driver as claimed any one in claims 1 to 3, it is characterised in that：The baffle ring (19) is by bearing (16) End face is provided with outer toroid boss (191) and interior annular boss (192), the outer toroid boss (191) and interior annular boss (192) annular groove (193) is formed between, the outer toroid boss (191) resists the outer ring of bearing (16), the inner circle ring convex Platform (192) resists the inner ring of bearing (16).

5. driver as claimed any one in claims 1 to 3, it is characterised in that：It is provided with edge on the driving section (141) The axially extending through-hole of transmission body (14), the through-hole are distributed in driving section (141) upper edge even circumferential, setting in the through-hole It is useful for the elastic pin (13) of transmission；Described connector (12) one end radially extends to form interconnecting piece (121), the connection Portion (121) is connect with driving section (141) is used for passing power torque；It is provided on the interconnecting piece (121) and driving section (141) The corresponding pin hole of upper through-hole；The elasticity pin (13) extends in pin hole.

6. driver as claimed in claim 5, it is characterised in that：It is respectively provided on the driving section (141) and interconnecting piece (121) It is useful for limiting the baffle ring (20) of elastic pin (13) position；The baffle ring (20) is separately fixed at driving section by fastener (141) and on interconnecting piece (121).

7. driver as claimed any one in claims 1 to 3, it is characterised in that：The transmission body (14) and connector (12) inner cavity of connection transmission shaft is all had, the interior intracavitary of the transmission body (14) and connector (12) is both provided with keyway.