Mechanical ratchet rocking handle suitable for different rocking handle joints of power plant

Abstract

The invention discloses a mechanical ratchet wheel rocking handle suitable for different rocking handle joints of a power plant. The mechanical ratchet wheel rocking handle comprises a rocking handle rod (1), a rotating joint (2) capable of rotating relative to the rocking handle rod (1) is arranged at the end of the rocking handle rod (1), a mounting rod (4) with adjustable length is arranged on one side of the rotating joint (2), a ratchet wheel head (5) is arranged at the end of the mounting rod (4), and a detachable rocking handle joint (3) is arranged in the ratchet wheel head (5). The rocking handle connector is convenient to replace, the cost can be reduced, and the occupied space of tools is reduced.

Description

Technical Field

[0001] The invention relates to a mechanical ratchet crank handle, in particular to a mechanical ratchet crank handle suitable for different crank handle joints of a power plant. Background Art

[0002] In the daily operation and maintenance of power plants, there are many devices that need to be operated with cranks, such as control mode switching, unlocking and locking switches, etc. However, there is a more serious problem at present, that is, different equipment is equipped with cranks of different specifications. These different specifications are mainly reflected in the length of the crank, the shape of the connection end (such as square, hexagonal, etc.). Therefore, during the maintenance process, various cranks of different specifications are required, which is not only costly, but also occupies a large space, which is not conducive to the maintenance work. Summary of the invention

[0003] The object of the present invention is to provide a mechanical ratchet crank handle suitable for different crank handle joints of power plants, which is convenient for replacing crank handle joints, can reduce costs, and reduces the space occupied by tools.

[0004] The technical solution adopted by the present invention to solve its technical problem is: the mechanical ratchet crank suitable for different crank joints of power plants described in the present invention includes a crank rod, a rotating joint that can rotate relative to the crank rod is provided at the end of the crank rod, a mounting rod with adjustable length is provided on one side of the rotating joint, a ratchet head is provided at the end of the mounting rod, and a detachable crank joint is in the ratchet head.

[0005] In the aforementioned mechanical ratchet crank suitable for different crank joints of power plants, the mounting rod includes an outer rod and an inner rod that can slide relative to the outer rod, a limit strip is provided on the inner side of the outer rod, a slot corresponding to the limit strip is provided on the outer side of the inner rod, positioning holes are provided on the outer rod and the inner rod, and a locking mechanism for locking the inner rod and the outer rod is provided inside the outer rod.

[0006] In the aforementioned mechanical ratchet crank handle suitable for different crank handle joints of power plants, the locking mechanism includes a rotating seat arranged on the inner side of the inner rod away from the contact end with the outer rod, a pressing block for driving the rotating seat to rotate is arranged in the rotating seat, the end of the pressing block exposes the inner rod, a return spring is arranged on the outer side of the pressing block and one end of the return spring is connected to the inner wall of the inner rod, a support connected to the other end of the return spring is arranged on the outer side of the pressing block, a spiral guide groove is arranged in the rotating seat, a matching block corresponding to the spiral guide groove is arranged at the end of the pressing block, a spring seat is arranged in the middle part of the inner side of the contact end of the inner rod and the outer rod, locking springs are arranged on both sides of the spring seat, a lock buckle is arranged at one end of the locking spring, a reversing block is arranged inside the spring seat, and a traction rope connecting the lock buckle and the rotating seat is arranged on the reversing block.

[0007] In the aforementioned mechanical ratchet crank suitable for different crank joints of power plants, a rectangular through slot for installing the crank joint is provided in the ratchet head, and sliding block locks for locking the crank joint are provided on the outer sides of both ends of the rectangular through slot, and the sliding block locks are perpendicular to the length direction of the rectangular through slot.

[0008] In the aforementioned mechanical ratchet crank handle suitable for different crank handle joints of a power plant, the slider lock includes locking grooves arranged on both sides of the rectangular through groove of the ratchet head, a slide buckle is provided in the locking groove, a shift block is provided on the slide buckle, a guide groove corresponding to the shift block is provided on the surface of the ratchet head, and a push spring connected to the slide buckle is provided at the bottom of the locking groove.

[0009] In the aforementioned mechanical ratchet crank suitable for different crank joints of power plants, a locking groove corresponding to the slider lock is provided in the crank joint.

[0010] In the aforementioned mechanical ratchet crank suitable for different crank joints of a power plant, the crank rod is a hollow crank rod, and a reinforcing rib is provided on the inner side of the crank rod to increase the strength of the crank rod.

[0011] The beneficial effects of the present invention are as follows:

[0012] 1. The mechanical ratchet crank handle suitable for different crank handle joints in power plants described in the present invention can achieve length adjustment by relative movement of an outer rod and an inner rod when a narrow and long working space is required, thereby being able to adapt to a relatively narrow and long working environment, and the outer rod and the inner rod can be quickly locked by a locking structure.

[0013] 2. The mechanical ratchet crank handle suitable for different crank handle joints in a power plant described in the present invention facilitates replacement of the crank handle joint by providing a crank handle joint that can be disassembled relative to the ratchet head, thereby adapting to different workpieces. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below in conjunction with the accompanying drawings.

[0015] Figure 1 It is a schematic diagram of the structure of the present invention;

[0016] Figure 2 It is a structural schematic diagram of the rocker rod of the present invention;

[0017] Figure 3 It is a partial structural schematic diagram of the locking mechanism of the present invention.

[0018] Legend:

[0019] 1- rocker rod, 2- rotating joint, 3- rocker joint, 4- mounting rod, 5- ratchet head, 6- outer rod, 7- inner rod, 8- limit strip, 9- slot, 10- positioning hole, 11- rotating seat, 12- pressing block, 13- reset spring, 14- support, 15- spiral guide groove, 16- matching block, 17- spring seat, 18- lock buckle, 19- locking spring, 20- reversing block, 21- traction rope, 22- rectangular through groove, 23- slider lock buckle, 24- lock groove, 25- reinforcing rib, 26- locking groove, 27- slide buckle, 28- dial block, 29- guide groove, 30- push spring. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Specific examples are given below.

[0022] Embodiment. A mechanical ratchet crank suitable for different crank joints of a power plant, comprising: Figure 1-3 As shown, it includes a crank rod 1, and the end of the crank rod 1 is provided with a rotating joint 2 that can rotate relative to the crank rod 1, one side of the rotating joint 2 is provided with a mounting rod 4 that can be adjusted in length, and the end of the mounting rod 4 is provided with a ratchet head 5, and the ratchet head 5 has a detachable crank joint 3.

[0023] The mounting rod 4 includes an outer rod 6 and an inner rod 7 which can slide relative to the outer rod 6. A limit strip 8 is provided on the inner side of the outer rod 6, and a slot 9 corresponding to the limit strip 8 is provided on the outer side of the inner rod 7. Positioning holes 10 are provided on the outer rod 6 and the inner rod 7. A locking mechanism for locking the inner rod 7 and the outer rod 6 is provided inside the outer rod 6.

[0024] The locking mechanism includes a rotating seat 11 arranged on the inner side of the inner rod 7 away from the contact end with the outer rod 6, a pressing block 12 for driving the rotating seat 11 to rotate is arranged in the rotating seat 11, the end of the pressing block 12 exposes the inner rod 7, a return spring 13 is arranged on the outer side of the pressing block 12, and one end of the return spring 13 is connected to the inner wall of the inner rod 7, a support 14 connected to the other end of the return spring 13 is arranged in the outer side of the pressing block 12, a spiral guide groove 15 is arranged in the rotating seat 11, and a matching block 16 corresponding to the spiral guide groove 15 is arranged at the end of the pressing block 12, a spring seat 17 is arranged in the middle of the inner side of the contact end of the inner rod 7 and the outer rod 6, locking springs 19 are arranged on both sides of the spring seat 17, a lock buckle 18 is arranged at one end of the locking spring 19, a reversing block 20 is arranged inside the spring seat 17, and a traction rope 21 connecting the lock buckle 18 and the rotating seat 11 is arranged on the reversing block 20.

[0025] The ratchet head 5 is provided with a rectangular through slot 22 for mounting the crank joint 3 , and the outer sides of both ends of the rectangular through slot 22 are provided with slider locks 23 for locking the crank joint 3 , and the sliding locks 23 are perpendicular to the length direction of the rectangular through slot 22 .

[0026] The slider lock 23 includes locking grooves 26 arranged on both sides of the rectangular through groove 22 of the ratchet head 5, a slide buckle 27 is arranged in the locking groove 26, a shift block 28 is arranged on the slide buckle 27, a guide groove 29 corresponding to the shift block 28 is arranged on the surface of the ratchet head 5, and a push spring 30 connected to the slide buckle 27 is arranged at the bottom of the locking groove 26.

[0027] The crank joint 3 is provided with a locking groove 24 corresponding to the slider lock 23 .

[0028] The crank rod 1 is a hollow crank rod, and a reinforcing rib 25 is provided inside the crank rod 1 to increase the strength of the crank rod 1 .

[0029] Working principle of the present invention: When the present invention is used, the length of the mounting rod 4 can be adjusted according to the equipment space in the power plant. When a larger force arm or a narrow and long space is required, the length of the mounting rod 4 needs to be increased. The staff can press down the pressing block 12. When the pressing block 12 is pressed, the matching block 16 will cooperate with the spiral guide groove 15 to press the rotating seat 11 to rotate. When the rotating seat 11 rotates, the traction rope 21 can be pulled, so that the traction rope 21 pulls the lock buckle 18 to move in the direction of the spring seat 17 and compresses the locking spring 19. The lock buckle 18 will disengage from the positioning hole 10, so that the inner rod 7 and the outer rod 6 can move relatively. The positioning holes 10 on the inner rod 7 are located at the end of the spring seat 17, and there is only one group, which corresponds to the position of the lock buckle 18. The number of positioning holes 10 on the outer rod 6 is multiple groups, and they are distributed along the axial direction. The position of the positioning holes 10 on the outer rod 6 corresponds to the position of the positioning holes on the inner rod 7. The setting of the limit strip 8 and the slot 9 can not only play a guiding role, but also ensure that the positioning holes on the inner rod can be aligned with the positioning holes on the outer rod. After the relative position adjustment of the inner rod 7 and the outer rod 6 is completed, the pressing block 12 is released, and the pressing block 12 is reset under the action of the reset spring 13, so that the rotating seat 11 rotates, and the lock buckle 18 is reset under the action of the locking spring 19, and the inner rod and the outer rod are locked to achieve the length adjustment of the mounting rod 4. When a large torque is not required or to adapt to a narrow and long space, the mounting rod can be shortened to reduce the load of the mounting rod 4 and increase the service life of the mounting rod. The crank joint 3 of the present application is detachable, and different types of crank joints 3 can be replaced as needed. When replacing, the block 28 is dialed to make the slide buckle 27 compress the push spring 30, and then the crank joint 3 is removed, and the new crank joint is inserted into the rectangular through groove 22, and the slide buckle 27 is released, so that the sliding lock buckle 23 locks the crank joint, which can be applied to various working conditions and reduces the overall mass and occupied space.

[0030] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A mechanical ratchet crank suitable for different crank joints in power plants, characterized by: The invention comprises a crank rod (1), wherein the end of the crank rod (1) is provided with a rotating joint (2) which can rotate relative to the crank rod (1), one side of the rotating joint (2) is provided with a mounting rod (4) whose length can be adjusted, the end of the mounting rod (4) is provided with a ratchet head (5), and a detachable crank joint (3) is arranged in the ratchet head (5).

2. A mechanical ratchet crank handle suitable for different crank joints in power plants according to claim 1, characterized in that: The mounting rod (4) comprises an outer rod (6) and an inner rod (7) which can slide relative to the outer rod (6); a limit strip (8) is provided on the inner side of the outer rod (6); a clamping groove (9) corresponding to the limit strip (8) is provided on the outer side of the inner rod (7); positioning holes (10) are provided on the outer rod (6) and the inner rod (7); and a locking mechanism for locking the inner rod (7) and the outer rod (6) is provided inside the outer rod (6).

3. A mechanical ratchet crank handle suitable for different crank joints in power plants according to claim 2, characterized in that: The locking mechanism comprises a rotating seat (11) arranged on the inner side of the inner rod (7) away from the contact end with the outer rod (6), a pressing block (12) is arranged inside the rotating seat (11) for driving the rotating seat (11) to rotate, the end of the pressing block (12) is exposed from the inner rod (7), a return spring (13) is arranged outside the pressing block (12), and one end of the return spring (13) is connected to the inner wall of the inner rod (7), a support (14) connected to the other end of the return spring (13) is arranged outside the pressing block (12), and the rotating seat (11) is provided with a pressing block (12). A spiral guide groove (15) is provided in the middle, a matching block (16) corresponding to the spiral guide groove (15) is provided at the end of the pressing block (12), a spring seat (17) is provided at the middle of the inner side of the contact end of the inner rod (7) and the outer rod (6), locking springs (19) are provided on both sides of the spring seat (17), a lock buckle (18) is provided at one end of the locking spring (19), a reversing block (20) is provided inside the spring seat (17), and a traction rope (21) connecting the lock buckle (18) and the rotating seat (11) is provided on the reversing block (20).

4. A mechanical ratchet crank handle suitable for different crank joints in a power plant according to claim 1, characterized in that: The ratchet head (5) is provided with a rectangular through slot (22) for mounting the crank joint (3), and sliding block locks (23) for locking the crank joint (3) are provided on the outer sides of both ends of the rectangular through slot (22), and the sliding block locks (23) are perpendicular to the length direction of the rectangular through slot (22).

5. A mechanical ratchet crank handle suitable for different crank joints in power plants according to claim 4, characterized in that: The slider lock (23) comprises locking grooves (26) arranged on both sides of the rectangular through groove (22) of the ratchet head (5), a slide buckle (27) is arranged in the locking groove (26), a shift block (28) is arranged on the slide buckle (27), a guide groove (29) corresponding to the shift block (28) is arranged on the surface of the ratchet head (5), and a push spring (30) connected to the slide buckle (27) is arranged at the bottom of the locking groove (26).

6. A mechanical ratchet crank handle suitable for different crank joints in power plants according to claim 4, characterized in that: The crank joint (3) is provided with a locking groove (24) corresponding to the slider lock buckle (23).

7. A mechanical ratchet crank handle suitable for different crank joints in a power plant according to claim 1, characterized in that: The crank rod (1) is a hollow crank rod, and a reinforcing rib (25) is provided inside the crank rod (1) to increase the strength of the crank rod (1).

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