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

Abstract

The utility model 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) which can rotate relative to the rocking handle rod (1) is arranged at the end part of the rocking handle rod (1), a mounting rod (4) of which the length can be adjusted is arranged on one side of the rotating joint (2), a ratchet wheel head (5) is arranged at the end part 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 utility model relates to a mechanical ratchet handle, especially a mechanical ratchet handle suitable for different handle joints of power plants. BACKGROUND

[0002] During the daily operation and maintenance of power plants, there are many devices that need to be operated by using a handle, such as control mode switching, unlocking and locking of switches, etc. However, there is a serious problem at present, that is, different devices are equipped with different specifications of handles. These different specifications mainly reflect in the length of the handle and the shape of the connecting end (such as square, hexagonal, etc.). Therefore, various different specifications of handles are needed during maintenance, which not only has high cost, but also occupies large space, which is not conducive to the maintenance work. SUMMARY

[0003] The utility model discloses a mechanical ratchet handle suitable for different handle joints of power plants. It is convenient to replace the handle joint, can reduce the cost, and reduce the tool space occupation.

[0004] The utility model discloses a mechanical ratchet handle suitable for different handle joints of power plants, which comprises a handle rod, a rotating joint rotatable relative to the handle rod is arranged at the end of the handle rod, a mounting rod with adjustable length is arranged at one side of the rotating joint, a ratchet head is arranged at the end of the mounting rod, and a handle joint detachable is arranged in the ratchet head.

[0005] In the foregoing mechanical ratchet handle suitable for different handle joints of power plants, the mounting rod comprises an outer rod and an inner rod slidable relative to the outer rod, a limiting strip is arranged on the inner side of the outer rod, a clamping groove corresponding to the limiting strip is arranged on the outer side of the inner rod, positioning holes are arranged on the outer rod and the inner rod, and a locking mechanism for locking the inner rod and the outer rod is arranged in the outer rod.

[0006] In the foregoing mechanical ratchet handle suitable for different handle joints of power plants, the locking mechanism comprises a rotating seat arranged on the inner side of the inner rod away from the contact end of 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 is exposed from the inner rod, a reset spring is arranged on the outer side of the pressing block, one end of the reset spring is connected with the inner wall of the inner rod, a support connected with the other end of the reset 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 on the end of the pressing block, a spring seat is arranged in the middle 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 catch is arranged on one end of the locking spring, a reversing block is arranged in the spring seat, and a traction rope connecting the lock catch and the rotating seat is arranged on the reversing block.

[0007] The rectangular through slot is provided with a sliding block lock at both ends of the rectangular through slot outside, and the sliding block lock is perpendicular to the length direction of the rectangular through slot.

[0008] The sliding block lock comprises a locking slot provided on both sides of the rectangular through slot of the ratchet head, a sliding buckle is arranged in the locking slot, a push block is arranged on the sliding buckle, a guide groove corresponding to the push block is arranged on the surface of the ratchet head, and a pushing spring connected with the sliding buckle is arranged at the bottom of the locking slot.

[0009] The ratchet head is provided with a locking slot corresponding to the sliding block lock.

[0010] The ratchet lever is a hollow ratchet lever, and a reinforcing rib for improving the strength of the ratchet lever is arranged on the inner side of the ratchet lever.

[0011] The beneficial effects of the utility model are as follows:

[0012] 1. The mechanical ratchet lever suitable for different ratchet joints of power plants, length-adjustable mounting rods are arranged, when a long and narrow working space is needed, the length adjustment can be realized through the relative movement of the outer rod and the inner rod, so that the long and narrow working environment can be adapted, and the outer rod and the inner rod can be quickly locked through the locking structure.

[0013] 2. The mechanical ratchet lever suitable for different ratchet joints of power plants, the ratchet joints can be disassembled and assembled relative to the ratchet head, the ratchet joint can be conveniently replaced, and different workpieces can be adapted. DRAWINGS

[0014] The utility model will be further described in connection with the drawings.

[0015] Fig. 1 It is the structural schematic diagram of the utility model;

[0016] Fig. 2 It is the structural schematic diagram of the ratchet lever of the utility model;

[0017] Fig. 3 It is the partial structural schematic diagram of the locking mechanism of the utility model.

[0018] LEGEND:

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

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0021] The specific embodiments are given below.

[0022] Embodiment. The mechanical ratchet handle suitable for different handle joints of power plants is composed of Figs. 1-3 As shown in the figure, it comprises a handle rod 1, the end of the handle rod 1 is provided with a rotary joint 2 which can rotate relative to the handle rod 1, one side of the rotary joint 2 is provided with a mounting rod 4 which can adjust the length, the end of the mounting rod 4 is provided with a ratchet head 5, and the ratchet head 5 is detachably provided with a handle joint 3.

[0023] The mounting rod 4 comprises an outer rod 6 and an inner rod 7 which can slide relative to the outer rod 6, the inner side of the outer rod 6 is provided with a limiting strip 8, the outer side of the inner rod 7 is provided with a clamping groove 9 corresponding to the limiting strip 8, the outer rod 6 and the inner rod 7 are provided with positioning holes 10, and the outer rod 6 is internally provided with a locking mechanism for locking the inner rod 7 and the outer rod 6.

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

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

[0026] The slider lock 23 includes locking grooves 26 on both sides of the rectangular through groove 22 of the ratchet head 5, a sliding buckle 27 in the locking groove 26, a lever 28 on the sliding buckle 27, a guide groove 29 on the surface of the ratchet head 5 corresponding to the lever 28, and a push spring 30 connected to the sliding buckle 27 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 handle 1 is a hollow crank handle, and the inner side of the crank handle 1 is provided with reinforcing ribs 25 to improve the strength of the crank handle 1.

[0029] The working principle of this utility model is as follows: When using this utility model, the length of the mounting rod 4 can be adjusted according to the space available in the power plant. In situations requiring a larger lever arm or in narrow spaces, the length of the mounting rod 4 needs to be increased. The operator can press down the pressing block 12. When the pressing block 12 is pressed down, the mating block 16 engages with the spiral guide groove 15, causing the rotating seat 11 to rotate. The rotation of the rotating seat 11 pulls the traction rope 21, causing the traction rope 21 to pull the locking buckle 18 towards the spring seat 17 and press down. When the locking spring 19 is retracted, the latch 18 disengages from the positioning hole 10, allowing the inner rod 7 and outer rod 6 to move relative to each other. The positioning hole 10 on the inner rod 7 is located at the end of the spring seat 17, and there is only one set, corresponding to the position of the latch 18. The outer rod 6 has multiple sets of positioning holes 10, distributed axially, with the positions of the positioning holes on the outer rod 6 corresponding to those on the inner rod 7. The limiting strip 8 and the slot 9 not only serve as guides but also ensure that the positioning holes on the inner rod are aligned with those on the outer rod. After the relative positions of the inner rod 7 and outer rod 6 are adjusted, the pressing block 12 is released, and the pressing block 12 resets under the action of the return spring 13, causing the rotating seat 11 to rotate. The latch 18 resets under the action of the locking spring 19, locking the inner and outer rods and enabling length adjustment of the mounting rod 4. When high torque is not required or when adapting to narrow spaces, the mounting rod can be shortened, reducing the load on the mounting rod 4 and extending its service life. The crank connector 3 of this application is detachable, and different models of crank connector 3 can be replaced as needed. When replacing, the lever 28 is turned to compress the push spring 30 by the sliding buckle 27, and then the crank connector 3 is removed. The new crank connector is inserted into the rectangular through slot 22, and the sliding buckle 27 is released so that the slider lock 23 locks the crank connector. It can be used in various working conditions and reduces the overall weight and space occupied.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A mechanical ratchet crank handle suitable for different crank joints in power plants, characterized in that: Includes a crank handle (1), the end of which is provided with a rotating joint (2) that can rotate relative to the crank handle (1), and a mounting rod (4) that can be length adjusted is provided on one side of the rotating joint (2), and a ratchet head (5) is provided at the end of the mounting rod (4), with a detachable crank handle joint (3) in the ratchet head (5).

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

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

4. The mechanical ratchet crank handle suitable for different crank joints in power plants according to claim 1, characterized in that: The ratchet head (5) is provided with a rectangular through groove (22) for installing the crank joint (3). The outer sides of both ends of the rectangular through groove (22) are provided with slider locks (23) for locking the crank joint (3). The slider locks (23) are perpendicular to the length direction of the rectangular through groove (22).

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

6. The 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 (23).

7. The mechanical ratchet crank handle suitable for different crank joints in power plants according to claim 1, characterized in that: The crank arm (1) is a hollow crank arm, and the inner side of the crank arm (1) is provided with reinforcing ribs (25) to improve the strength of the crank arm (1).

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