CN109702677B - Mushroom-shaped high-torque ratchet wrench - Google Patents
Mushroom-shaped high-torque ratchet wrench Download PDFInfo
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- CN109702677B CN109702677B CN201910174816.9A CN201910174816A CN109702677B CN 109702677 B CN109702677 B CN 109702677B CN 201910174816 A CN201910174816 A CN 201910174816A CN 109702677 B CN109702677 B CN 109702677B
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Abstract
The utility model discloses a mushroom-shaped high-torque ratchet wrench which comprises a top cover and a bottom cover which are mutually buckled, wherein a gear set is arranged in the top cover and the bottom cover and comprises a front gear, a duplex gear and a rear gear which are sequentially meshed, the front gear, the duplex gear and the rear gear are respectively arranged between the top cover and the bottom cover in a rotating way through a front gear shaft, a middle gear shaft and a rear gear shaft, the rear gear is movably connected with a trigger, the trigger is movably clamped with the rear gear through an adjusting mechanism, the top cover and the bottom cover are both in a mushroom-shaped umbrella cover with a narrow head and a wide tail, a duplex large gear of the duplex gear is meshed with the rear gear, a duplex small gear of the duplex gear is meshed with the front gear, and a four-corner joint is arranged at the lower end of the front gear shaft penetrating through the bottom cover. When the bolt is installed or disassembled, the end cover and the top cover can be propped against the structure, so that the operation is labor-saving and quick, the screwing moment is large, the trigger movable range is wide, and the operation can be quickly performed in a narrow space.
Description
Technical Field
The utility model relates to the technical field of bolt dismounting tools, in particular to a mushroom-shaped high-torque ratchet wrench.
Background
The ratchet wrench is a tool for manually tightening and loosening bolts, is formed by connecting main plum blossom sleeves with different specifications and sizes and auxiliary plum blossom sleeves in a hinged key meshing mode, can be always screwed (loosened) along clockwise direction under the condition that the wrench is not required to be separated from the bolts by adjusting the action positions of different limiting blocks, and can be conveniently adjusted in use angle by the movable wrench, so that the application range is wider.
During industrial equipment installation, ratchet wrenches are often used to tighten and loosen bolts. In order to ensure that the ratchet wrench can provide enough torque, the design of the wrench is long, and the wrench is feasible in the condition of wide operating space, and even a steel pipe can be sleeved at the rear end of the wrench to increase the torque. However, in a narrow space, the distance between the parts is relatively small, the screwing angle of the ratchet wrench is extremely limited, so that the screwing frequency has to be increased, meanwhile, from the mechanical angle analysis, the force applied by the hand to the movable trigger forms a moment at the bolt, the moment formed after the hand is supported between other parts of the human body and the structure is counteracted, the moment is usually acted as a part counteracting the moment through the body, the foot or the hand, and the people can feel very uncomfortable after being stressed by concentrated force for a long time.
In order to solve the above-mentioned problems, there are many hydraulic torque wrenches that provide tightening or loosening power to the wrench by hydraulic pressure and transmit a reaction force to a structure through an extended portion, so that an operator does not need to receive a reaction force. However, most hydraulic torque wrenches have heavy bodies and require equipment such as pump stations, duplex high-pressure hoses, high-strength heavy-duty sleeves and the like dedicated to the hydraulic torque wrenches, and are relatively physically consumed for handling and operation. For some special devices, the devices need to be installed on the project site, which clearly brings great inconvenience to use.
The patent application publication No. 2016.02.06 and 201610083133.9 discloses a high torque quick drive ratchet wrench: comprises a body, a ratchet wheel, a transmission rod and a long pin. The body, in addition to incorporating a rotatable ratchet, can also guide the drive rod back and forth along a straight line. The distance of the displacement of the transmission rod is limited by the long pin, and the kinetic energy of the transmission rod is converted into the rotational kinetic energy of the ratchet wheel through the meshing relationship of a certain gear ratio. Particularly in a narrow space, the ratchet wrench is operated by one hand to perform locking or dismounting operations. The utility model fully utilizes the meshing relationship among gear sets, can realize the low-input and high-output of torque and can realize the high-input and low-output of torque, but the counter torque is still provided by operators, no good external force is used, and the labor intensity of the operators is still very high. In addition, the technical scheme of the utility model has complex structure, needs mutually assembled parts with small sizes, and has difficult assembly and high manufacturing cost.
The patent application publication No. 2016.04.01 and 201620286970.7 discloses a gear speed increasing ratchet wrench: the ratchet wrench comprises a gear set, wherein the gear set is composed of a first-stage gear, a linkage gear and a second-stage gear, the transmission ratio of the gear set is smaller than 1, the purpose of the quick installation and disassembly of a nut is achieved through the principle of gear acceleration, ratchets are arranged on the first-stage gear and are matched with pawls on a handle, and therefore the function of continuous work of the ratchet wrench is achieved. Firstly, the cooperation of the three gears realizes 'low-speed input and high-speed output', and the combination is also 'high-torque input and low-torque output' in terms of the other angles. This is applicable in situations where the bolt and nut tightening requirements are not high, but where the tightening requirements are high, i.e. sufficient tightening force needs to be provided to the bolt and nut to ensure the safety of the structural connection, the utility model is obviously not applicable because of the low torque output during installation and removal. Secondly, because structural design's reason, the notch that supplies the handle activity that the drain pan offered is less, this just has restricted handle pivoted angle to the handle needs constantly to reset in the use, and work efficiency obviously reduces. Then, the rotation relation among the handle, the gear set, the plum blossom sleeve and the nut is analyzed, the rotation direction of the handle and the nut is consistent, and the handle needs to be synchronously wrenched in the same direction when the nut is disassembled and installed. Because the technical scheme only gives out the transmission process of the internal structure and does not give out an actual operation method, the end part of the wrench needs to resist torque by means of external force when the nut is installed, the handle needs to be completely or partially propped against the structure of the installation bolt, so that the rotation angle of the handle can not be further reduced, and the handle needs to be frequently returned back and forth, and the technical scheme of the utility model can not achieve the expected speed increasing function; assuming that the wrench resists torque without external force when installing or dismantling the nut, an operator is required to fix the rear end of the top (bottom) shell with one hand at this time, and the other hand is used for rotating the handle, which undoubtedly increases labor output, and when the fastening force reaches a certain degree, the rear end of the top (bottom) shell is difficult to fix, so that the corresponding purpose of disassembling or installing the bolt cannot be achieved. Finally, the ratchet that sets up on the first-stage gear, the processing degree of difficulty is great on the one hand, and on the other hand has certain weakening to structural strength, lacks the convenience when the handle comes and goes the return, not only needs the meshing of ratchet on the ratchet of manual release handle and the first-stage gear, still needs again manual realization meshing after the return.
Disclosure of Invention
Aiming at the defects in the background technology, the utility model provides a mushroom-shaped high-torque ratchet wrench, which solves the technical problems that the existing ratchet wrench is difficult to tighten or loosen after being fastened due to insufficient torque provided in a narrow operation space.
The technical scheme of the utility model is realized as follows: the mushroom-shaped high-torque ratchet wrench comprises a top cover and a bottom cover which are buckled with each other, wherein a gear set is arranged in the top cover and the bottom cover and comprises a front gear, a duplex gear and a rear gear which are sequentially meshed, the front gear, the duplex gear and the rear gear are respectively arranged between the top cover and the bottom cover in a rotating manner through a front gear shaft, a middle gear shaft and a rear gear shaft, and the lower end of the front gear shaft penetrates through the bottom cover and is provided with four corner joints. The rear gear is movably connected with a trigger, the trigger is movably clamped with the rear gear through the adjusting mechanism, and the trigger can be automatically returned through the clamping of the adjusting mechanism and the rear gear, so that the quick installation or the disassembly of the bolt is realized. The shape of the top cover and the shape of the bottom cover are mushroom umbrella covers with narrow heads and wide tails, the heads of the top cover and the bottom cover can be propped against a structure to be disassembled or provided with bolts, and the trigger can be pulled back and forth in a wide range at the wider tails, so that the extra labor intensity of manually fixing the ends is avoided, and the large-range quick pulling of the trigger is realized. The double large gear of the double gear is meshed with the rear gear, the double small gear of the double gear is meshed with the front gear, and the double gear is used as an intermediate transmission gear, so that high-speed transmission is ensured, a larger pulling range is provided for a trigger at the rear, meanwhile, the speed is increased for one stage, and large torque can be provided on the premise of ensuring quick transmission.
The adjusting mechanism comprises a sleeve hole arranged at the front end of the trigger, the rear gear shaft is inserted into the sleeve hole, and the rear gear shaft can rotate in the sleeve hole. The rear end of the trepanning is provided with a half cylinder, a lock cover is arranged above the half cylinder, a lock column which horizontally rotates is arranged between the half cylinder and the trepanning, the upper end of the lock column is provided with a lock column shaft matched with the lock cover, the upper end of the lock cover is provided with a deflector rod fixedly connected with the lock column shaft, and the lock column can be driven to rotate by stirring the deflector rod. The two sides of the lock post are respectively provided with a lock plate matched with the tooth grooves of the rear gear, a compression spring is arranged between the lock plate and the side wall of the semicircular cylinder, and the lock post is provided with a cam for movably pushing the lock plate. When the bolt is required to be installed, the lock post can drive the cam to push the lock plate on one side after the shift lever is shifted, and the lock plate on one side is separated from the rear gear after being pushed. At this time, the lock plate on the other side can push against the tooth slot of the rear gear in one rotation direction, and at this time, the rear gear can be driven to rotate by the rotation trigger, and the rear gear drives the four-corner joint to rotate through the duplex gear and the front gear. When the trigger rotates to the limit position, the trigger is turned back, the lock plate matched with the tooth groove of the rear gear can rotate relative to the rear gear under the action of the compression spring, the trigger can return to the initial position, and then the trigger is repeatedly rotated. When the bolt is required to be disassembled, the toggle lever is shifted to the other side, and then the trigger is rotated in the opposite direction in the same way.
Further, the front end of the trigger is provided with a rear tooth pad, the trepanning and the semicircle cylinder are all arranged on the rear tooth pad, the lower ends of the lock plate and the lock column are rotationally arranged on the rear tooth pad, the upper ends of the lock plate and the lock column are rotationally arranged on the lock cover, and the arrangement of the rear tooth pad is convenient for the arrangement of the lock plate and the lock column and can provide convenience for the installation of the rear gear. The rear end of the bottom cover and the rear end of the top cover are respectively provided with a bottom cover sector plate and a top cover sector plate which correspond to the rear tooth pad, and the bottom cover sector plate and the top cover sector plate are respectively provided with a top cover rear shaft hole and a bottom cover rear shaft hole for installing the rear tooth shaft.
Furthermore, the inner side of the top cover sector plate or/and the inner side of the bottom cover sector plate is provided with a rear tooth groove matched with the rear gear, and the rear tooth groove is convenient to install, so that the novel multifunctional fan is compact and practical in structure and further expands the application range. The rear tooth slot is provided with an arc groove.
Further, when the rear tooth groove is arranged on the top cover sector plate, the double large gear of the double gear is close to the top cover, the double small gear is close to the bottom cover, the front end of the bottom cover is provided with a front tooth groove matched with the front gear, and the middle part of the top cover is provided with a middle tooth groove matched with the double gear; when the rear tooth groove is arranged on the bottom cover sector plate, the double large gear of the double gear is close to the bottom cover, the double small gear is close to the top cover, the front end of the top cover is provided with a front tooth groove matched with the front gear, and the middle part of the bottom cover is provided with a middle tooth groove matched with the double gear.
Further, the compression spring is a conical spiral spring, and the conical spiral spring is convenient to install and match. The bottom surface of the conical spiral spring is fixed on the side wall of the semi-cylinder, so that the installation reliability of the conical spiral spring is fully ensured, and the top surface of the conical spiral spring is propped against the outer wall of the locking plate.
Further, the cross section of the cam is fan-shaped, and the cam has a smooth peripheral surface, so that the locking cooperation of the two locking plates to the rear gear can be conveniently adjusted.
Further, the top of lock cylinder axle is provided with the lug, the downside of driving lever is provided with the recess with lug interference fit, and the cooperation of lug and recess both is convenient for process, by being convenient for install and dismantle.
Further, the front gear shaft is a reducing shaft, the upper gear shaft above the front gear is smaller than the lower gear shaft below the front gear, and the four-corner joint is connected with the lower gear shaft. The other end of the four-corner connector is movably connected with an inner hexagonal connector or an outer hexagonal connector. The lower gear shaft is directly connected with the bolt through the outer hexagonal joint or the inner hexagonal joint, and bears larger torsion in the process of fastening the bolt, so that the diameter of the lower gear shaft is designed larger.
Compared with the prior art, the utility model has the following advantages:
the gear set comprises a front gear, a duplex gear and a rear gear, wherein the front gear is meshed with the duplex pinion, the rear gear is meshed with the duplex bull gear, and the rear gear is matched with a locking plate in the wrench. On one hand, the output of larger torsion can be realized by rotating the trigger, and on the other hand, the rotation direction (clockwise and anticlockwise) of the trigger is consistent with the rotation direction of the front gear, namely the rotation direction of the bolt to be screwed is consistent with the rotation direction of the bolt to be screwed, so that the conventional operation habit is met.
During use, the force of contact between the sides of the top (bottom) cover and the structure through the mushroom cap is used to counteract the torque applied to the trigger by the operator. In order to enhance the applicability of the mushroom umbrella, the top cover and the bottom cover are designed into mushroom umbrella covers, namely, the heads are narrower and the bottoms are wider, in consideration of the difference of the distances between different bolts and the structural objects, and meanwhile, the structural objects are prevented from bearing local excessive pressure.
The front end of the wrench is provided with a rear tooth pad, the front part of the rear tooth pad is provided with a sleeve hole, and the sleeve hole is matched with the rear tooth shaft. The rear gear shaft is used as a connecting shaft of the rear gear on one hand and is used as a rotating shaft of the wrench on the other hand, so that the combination of the wrench and the gear set can be realized. The rear end of the bottom cover is provided with a bottom cover sector plate, and the rear tooth pad is positioned in an inner space formed after the bottom cover sector plate and the top cover are attached, so that the rotation angle of the wrench is limited, and the bolts can be continuously screwed or unscrewed in a limited operation space without separating the bolts and the connector.
Drawings
In order to more clearly illustrate the embodiments of the present utility model, the drawings that are required for the description of the embodiments will be briefly described below, it being apparent that the drawings in the following description are only some embodiments of the present utility model and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is an exploded view of FIG. 1;
FIG. 3 is a schematic view of the inner surfaces of the top and bottom covers of FIG. 2;
FIG. 4 is a schematic view of the outer construction of the top and bottom covers of FIG. 2;
FIG. 5 is a schematic diagram of the structure of the gear set of FIG. 2;
FIG. 6 is a schematic view of the wrench of FIG. 2;
FIG. 7 is a schematic view of the structure of the inner and outer hex connectors mated with the connector;
fig. 8 is a schematic view of the present utility model in use.
In the figure: the top cover 1, the top cover front shaft hole 1-1, the top cover middle shaft hole 1-2, the top cover middle tooth groove 1-3, the top cover rear shaft hole 1-4, the top cover rear tooth groove 1-5, the groove 1-6, the top cover bolt hole 1-7, the top cover bolt 1-8, the bottom cover 2, the bottom cover front shaft hole 2-1, the bottom cover front tooth groove 2-2, the bottom cover middle shaft hole 2-3, the bottom cover middle tooth groove 2-4, the bottom cover rear shaft hole 2-5, the bottom cover sector plate 2-6, the bottom cover bolt hole 2-7, the gear set 3, the front gear 3-1, the front gear 3-2, the four-corner joint 3-3, the double-joint big gear 3-4, the middle gear 3-5, the double-joint pinion 3-6, the rear gear 3-7, the rear gear 3-8, the double-joint gear 3-9 the spanner comprises a spanner body 4, a sleeve hole 4-1, a rear tooth pad 4-2, a lock cylinder lower shaft hole 4-3, a lock plate lower shaft hole 4-4, a semicircular cylinder bolt hole 4-5, a semicircular cylinder 4-6, an adjusting mechanism 4-7, a lock plate shaft 4-8, a lock cylinder shaft 4-9, a lock cylinder 4-10, a convex block 4-11, a lock plate 4-12, a conical spiral spring 4-13, a lock cylinder upper shaft hole 4-14, a lock cover 4-15, a lock cover bolt hole 4-16, a lock cover bolt 4-17, a deflector rod 4-18, a lock plate upper shaft hole 4-19, an outer hexagonal joint 5-1, an outer hexagonal column 5-2, an inner hexagonal joint 6-1 and an inner hexagonal cylinder 6-2.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without any inventive effort, are intended to be within the scope of the utility model.
Embodiment 1, mushroom-shaped high torque ratchet wrench, as shown in fig. 1 and 2, includes top cap 1 and bottom cap 2 that lock each other, is provided with top cap bolt hole 1-7 on top cap 1, is provided with bottom cap bolt hole 2-7 corresponding to top cap bolt hole 1-7 on bottom cap 2, and top cap 1 and bottom cap 2 are through the top cap bolt 1-8 lock connection with top cap bolt hole 1-7 and bottom cap bolt hole 2-7 matched with each other.
As shown in fig. 2, 3, 4 and 5, a gear set 3 is disposed in the top cover 1 and the bottom cover 2, the gear set 3 includes a front gear 3-1, a duplex gear 3-9 and a rear gear 3-7 which are sequentially meshed, and the front gear 3-1, the duplex gear 3-9 and the rear gear 3-7 are rotatably disposed between the top cover 1 and the bottom cover 2 through a front gear shaft 3-2, a middle gear shaft 3-5 and a rear gear shaft 3-8, respectively. The top cover 1 is internally provided with a top cover front shaft hole 1-1 matched with a front gear shaft 3-2, a top cover middle shaft hole 1-2 matched with a duplex gear 3-9 and a top cover rear shaft hole 1-4 matched with a rear gear 3-7, and correspondingly, the bottom cover 2 is internally provided with a corresponding bottom cover front shaft hole 2-1, a bottom cover middle shaft hole 2-3 and a bottom cover rear shaft hole 2-5, and the gear shafts are arranged between the top cover 1 and the bottom cover through corresponding shaft holes.
As shown in fig. 5 and 7, the lower end of the front gear shaft 3-2 passes through the bottom cover 2 and is provided with a four-corner joint 3-3, the end of the four-corner joint 3-3 is movably connected with an inner hexagonal joint 6 or an outer hexagonal joint 5, and the inner hexagonal joint 6 or the outer hexagonal joint 5 can be directly matched with a bolt 7 to be installed or dismounted. As shown in FIG. 5, the double large gear 3-4 of the double gear 3-9 is meshed with the rear gear 3-7, and the double small gear 3-6 of the double gear 3-9 is meshed with the front gear 3-1. The duplex gear 3-9 is used as an intermediate transmission gear, so that high-speed transmission is ensured, a larger pulling range is provided for the rear trigger 4, and meanwhile, the speed is increased for one stage, and large torque can be provided on the premise of ensuring quick transmission.
As shown in fig. 2, the rear gear 3-7 is movably connected with a trigger 4, the trigger 4 is movably clamped with the rear gear 3-7 through the adjusting mechanism 4-7, and the driving direction of the trigger 4 can be changed and the trigger 4 can be automatically returned through the clamping of the adjusting mechanism 4-7 and the rear gear 3-7, so that the quick installation or the disassembly of the bolt 7 is realized. The shape of the top cover 1 and the shape of the bottom cover 2 are mushroom umbrella covers with narrow heads and wide tails, the heads of the top cover 1 and the bottom cover 2 can be propped against a structure to be disassembled or provided with a bolt 7, and the trigger 4 can be pulled back and forth in a wide range at the wider tails, so that the extra labor intensity of manually fixing the ends is avoided, and the large-range quick pulling of the trigger 4 is realized.
As shown in FIG. 6, the adjusting mechanism 4-7 comprises a sleeve hole 4-1 arranged at the front end of the trigger, the rear gear shaft 3-8 is inserted into the sleeve 4-1 hole, and the rear gear shaft 3-8 can rotate in the sleeve hole 4-1. The rear end of the sleeve hole 4-1 is provided with a semi-cylinder 4-6, a lock cover 4-15 is arranged above the semi-cylinder 4-6, a lock cover bolt hole 4-16 is arranged on the lock cover 4-15, a semi-cylinder bolt hole 4-5 corresponding to the lock cover bolt hole 4-16 is arranged on the semi-cylinder 4-6, and the lock cover 4-15 and the semi-cylinder 4-6 are fixedly connected through bolts 4-17 matched with the lock cover bolt hole 4-16 and the semi-cylinder bolt hole 4-6.
A lock cylinder 4-10 which horizontally rotates is arranged between the half cylinder 4-6 and the sleeve hole 4-1, the lock cylinder 4-10 is provided with a lock cylinder shaft 4-9, the upper end of the lock cylinder shaft 4-9 is matched with a lock cover 4-15, the lock cover 4-15 is provided with a lock cylinder upper shaft hole 4-14 matched with the lock cylinder shaft 4-9, and the lock cylinder 4-10 can rotate below the lock cover 4-15. The upper end of the lock cover 4-15 is provided with a deflector rod 4-18 fixedly connected with the lock cylinder shaft 4-9, and the deflector rod 4-18 can be stirred to drive the lock cylinder 4-10 to rotate. Two sides of the lock post 4-10 are respectively provided with a lock plate 4-12 matched with tooth grooves of the rear gear 3-7, a compression spring is arranged between the lock plate 4-12 and the side wall of the semicircular cylinder 4-6, and the lock post 4-10 is provided with a cam for movably pushing the lock plate 4-12.
As shown in fig. 8, when the bolt 7 is required to be installed, the top cover 1 and the bottom cover 2 are propped against a structure provided with the bolt 7, then the driving lever 4-18 is shifted, the lock post 4-10 can drive the cam to prop against the lock plate 4-12 on one side, and the lock plate 4-12 on one side is separated from the rear gear 3-7 after being propped against. At this time, the locking plate 4-12 at the other side can push against the tooth slot of the rear gear 3-7 in one rotation direction, at this time, the rotary trigger 4 can drive the rear gear 3-7 to rotate, and the rear gear 3-7 drives the four-corner joint 3-3 to rotate through the duplex gear 3-9 and the front gear 3-1. When the trigger 4 rotates to the limit position, the trigger 4 is turned back, the lock plate 4-12 matched with the tooth slot of the rear gear 3-7 can rotate relative to the rear gear 3-7 under the action of the compression spring, the trigger 4 can return to the initial position, and then the trigger 4 is repeatedly rotated. When the bolt 7 needs to be disassembled, the trigger is turned in the opposite direction by the same method after the deflector rod is pulled to the other side.
In the embodiment 2, as shown in fig. 6, the front end of the trigger 4 is provided with a rear tooth pad 4-2, the trepanning 4-1 and the semicircle barrel 4-6 are all arranged on the rear tooth pad 4-2, and the lower ends of the lock plate 4-12 and the lock cylinder 4-10 are rotatably arranged on the rear tooth pad 4-2. The rear tooth pad 4-2 is provided with a lock cylinder lower shaft hole 4-3 matched with the lower end of the lock cylinder shaft 4-9, and the lock cylinder 4-10 is rotatably arranged between the lock cylinder lower shaft hole 4-3 and the lock cylinder upper shaft hole 4-14. The upper end and the lower end of the lock plate 4-12 are respectively provided with a lock plate shaft 4-8, the lock cover 4-15 is provided with a lock plate upper shaft hole 4-19 matched with the lock plate shaft 4-8, the rear tooth pad 4-2 is provided with a lock plate lower shaft hole 4-4 corresponding to the lock plate upper shaft hole 4-19, and the lock plate 4-12 is rotatably arranged between the lock plate upper shaft hole 4-19 and the lock plate lower shaft hole 4-4.
The arrangement of the rear tooth pad 4-2 is convenient for the arrangement of the lock plate 4-12 and the lock post 4-10, and can provide convenience for the installation of the rear gear 3-7. The rear end of the bottom cover 2 and the rear end of the top cover 1 are respectively provided with a bottom cover sector plate 2-6 and a top cover sector plate corresponding to the rear tooth pad 4-2, and the bottom cover sector plate 2-6 and the top cover sector plate are respectively provided with a top cover rear shaft hole 1-4 and a bottom cover rear shaft hole 2-5 for installing the rear tooth shaft 3-8.
Other structures of this embodiment are the same as those of embodiment 1.
In embodiment 3, as shown in fig. 3, the inner side of the top cover sector plate or/and the inner side of the bottom cover sector plate 2-6 is provided with a rear tooth slot 1-5 matched with the rear gear 3-7, and the rear tooth slot 1-5 is convenient to install, so that the utility model has compact and practical structure and further expands the application range. The rear tooth groove 2-5 is provided with an arc-shaped groove 1-6.
Other structures of this embodiment are the same as those of embodiment 1 or 2.
In the embodiment 4, as shown in fig. 3, when the rear tooth groove 1-5 is arranged on the sector plate of the top cover, the double large gear 3-4 of the double gear 3-9 is close to the top cover 1, the double small gear 3-6 is close to the bottom cover 2, the front end of the bottom cover 2 is provided with a front tooth groove 2-2 matched with the front gear 3-1, and the middle part of the top cover 1 is provided with a middle tooth groove 1-3 matched with the double gear 3-9; when the rear tooth groove 1-5 is arranged on the bottom cover sector plate 2-6, the double large gear 3-4 of the double gear 3-9 is close to the bottom cover 2, the double small gear 3-6 is close to the top cover 1, a front tooth groove matched with the front gear 3-1 is arranged at the front end of the top cover 1, and a middle tooth groove matched with the double gear 3-9 is arranged at the middle part of the bottom cover 2.
Other structures of this embodiment may be the same as any one of embodiments 1 to 3.
In the embodiment 5, as shown in fig. 6, the compression spring is a conical spiral spring 4-13, and the conical spiral spring 4-13 is convenient for installation and matching. The bottom surface of the conical spiral spring 4-13 is fixed on the side wall of the semi-cylinder 4-6, so that the installation reliability of the conical spiral spring 4-13 is fully ensured, and the top surface of the conical spiral spring 4-13 is propped against the outer wall of the lock plate 4-12.
Other structures of this embodiment may be the same as any one of embodiments 1 to 4.
In embodiment 6, as shown in fig. 6, the cross section of the cam is a sector, and has a smooth outer peripheral surface, so as to facilitate adjustment of the locking engagement of the two lock plates 4-12 to the rear gear 3-7.
Other structures of this embodiment may be the same as any one of embodiments 1 to 5.
In embodiment 7, as shown in fig. 6, the top end of the lock cylinder shaft 4-9 is provided with a protruding block 4-11, the lower side of the shift lever 4-18 is provided with a groove in interference fit with the protruding block 4-11, and the matching of the protruding block 4-11 and the groove is convenient for processing, mounting and dismounting.
Other structures of this embodiment may be the same as any one of embodiments 1 to 6.
In embodiment 8, as shown in fig. 7 and 8, the front tooth shaft 3-2 is a reducing shaft, the upper tooth shaft above the front gear 3-1 is smaller than the lower tooth shaft below, and the four-corner joint 3-3 is connected with the lower tooth shaft. The other end of the four-corner joint 3-3 is movably connected with an inner hexagonal joint 6 or an outer hexagonal joint 5. The inner hexagonal joint 6 comprises an inner hexagonal cylinder 6-2 matched with the bolt 7 and an inner hexagonal connecting part 6-1 matched with the quadrangular joint 3-3. The outer hexagonal joint 5 comprises an outer hexagonal column 5-2 matched with the inner hexagonal bolt and an outer hexagonal connecting part 5-1 matched with the four-corner joint 3-3. The lower gear shaft is directly connected with the bolt 7 through the inner hexagonal joint, and can bear larger torsion in the process of fastening the bolt 7, so that the diameter of the lower gear shaft is designed larger.
Other structures of this embodiment may be the same as any one of embodiments 1 to 7.
The present utility model is not limited to the conventional technical means known to those skilled in the art.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.
Claims (9)
1. Mushroom-shaped high-torque ratchet wrench comprises a top cover (1) and a bottom cover (2) which are buckled with each other, wherein a gear set (3) is arranged in the top cover (1) and the bottom cover (2), the gear set (3) comprises a front gear (3-1), a duplex gear (3-9) and a rear gear (3-7) which are sequentially meshed, and the front gear (3-1), the duplex gear (3-9) and the rear gear (3-7) are respectively arranged between the top cover (1) and the bottom cover (2) in a rotating manner through a front gear shaft (3-2), a middle gear shaft (3-5) and a rear gear shaft (3-8), and the mushroom-shaped high-torque ratchet wrench is characterized in that: the novel multifunctional wrench is characterized in that the rear gear (3-7) is movably connected with a trigger (4), the trigger (4) is movably clamped with the rear gear (3-7) through an adjusting mechanism (4-7), the shape of the top cover (1) and the shape of the bottom cover (2) are mushroom umbrella covers with narrow heads and wide tails, a double large gear (3-4) of the double gear (3-9) is meshed with the rear gear (3-7), a double small gear (3-6) of the double gear (3-9) is meshed with the front gear (3-1), and a four-corner joint (3-3) is arranged at the lower end of the front gear shaft (3-2) penetrating through the bottom cover (2);
the adjusting mechanism (4-7) comprises a sleeve hole (4-1) arranged at the front end of the trigger (4), the rear gear shaft (3-8) is inserted into the sleeve hole (4-1), a semi-cylinder (4-6) is arranged at the rear end of the sleeve hole (4-1), a lock cover (4-15) is arranged above the semi-cylinder (4-6), a lock post (4-10) which horizontally rotates is arranged between the semi-cylinder (4-6) and the sleeve hole (4-1), a lock post shaft (4-9) is arranged on the lock post (4-10), the upper end of the lock post shaft (4-9) is matched with the lock cover (4-15), a deflector rod (4-18) fixedly connected with the lock post shaft (4-9) is arranged at the upper end of the lock cover (4-15), a lock plate (4-12) matched with a tooth socket of the rear gear (3-7) is arranged on two sides of the lock post (4-10), a compression lock plate (4-12) is arranged between the lock plate (4-12) and the lock post (4-6), and the cam plate (4-12) is arranged on the side wall of the lock post.
2. The mushroom-shaped high torque ratchet wrench of claim 1, wherein: the front end of the trigger (4) is provided with a rear tooth pad (4-2), sleeve holes (4-1) and semicircular cylinders (4-6) are respectively arranged on the rear tooth pad (4-2), the lower ends of the lock plate (4-12) and the lock post (4-10) are rotatably arranged on the rear tooth pad (4-2), the upper ends of the lock plate (4-12) and the lock post (4-10) are rotatably arranged on the lock cover (4-15), the rear end of the bottom cover (2) and the rear end of the top cover (1) are respectively provided with a bottom cover sector plate (2-6) and a top cover sector plate corresponding to the rear tooth pad (4-2), and top cover rear axle holes (1-4) for installing rear tooth axles (3-8) and bottom cover rear axle holes (2-5) are respectively formed in the bottom cover sector plate (2-6) and the top cover sector plate.
3. The mushroom-shaped high torque ratchet wrench of claim 2, wherein: rear tooth grooves (1-5) matched with the rear gears (3-7) are formed in the inner side of the top cover sector plate or/and the inner side of the bottom cover sector plate (2-6), and arc-shaped grooves (1-6) are formed in the rear tooth grooves (1-5).
4. A mushroom-shaped high torque ratchet wrench according to claim 3, wherein: when the rear tooth groove (1-5) is arranged on the top cover sector plate, a double large gear (3-4) of a double gear (3-9) is close to the top cover (1), a double small gear (3-6) is close to the bottom cover (2), a front tooth groove (2-2) matched with the front gear (3-1) is arranged at the front end of the bottom cover (2), and a middle tooth groove (1-3) matched with the double gear (3-9) is arranged in the middle of the top cover (1); when the rear tooth groove (1-5) is arranged on the bottom cover sector plate (2-6), the double large gear (3-4) of the double gear (3-9) is close to the bottom cover (2), the double small gear (3-6) is close to the top cover (1), the front end of the top cover (1) is provided with a front tooth groove matched with the front gear (3-1), and the middle part of the bottom cover (2) is provided with a middle tooth groove matched with the double gear (3-9).
5. The mushroom-shaped high torque ratchet wrench of any one of claims 1-4, wherein: the compression spring is a conical spiral spring (4-13), the bottom surface of the conical spiral spring (4-13) is fixed on the side wall of the semi-cylinder (4-6), and the top surface of the conical spiral spring (4-13) is propped against the outer wall of the lock plate (4-12).
6. The mushroom-shaped high torque ratchet wrench of claim 5, wherein: the cross section of the cam is fan-shaped.
7. The mushroom high torque ratchet wrench of any one of claims 1-4 or 6, wherein: the top of the lock cylinder shaft (4-9) is provided with a bump (4-11), and the lower side of the deflector rod (4-18) is provided with a groove in interference fit with the bump (4-11).
8. The mushroom-shaped high torque ratchet wrench of claim 7, wherein: the front gear shaft (3-2) is a reducing shaft.
9. The mushroom high torque ratchet wrench of any one of claims 1-4, 6 or 8, wherein: the other end of the four-corner joint (3-3) is movably connected with an inner hexagonal joint (6) or an outer hexagonal joint (5).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910174816.9A CN109702677B (en) | 2019-03-08 | 2019-03-08 | Mushroom-shaped high-torque ratchet wrench |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910174816.9A CN109702677B (en) | 2019-03-08 | 2019-03-08 | Mushroom-shaped high-torque ratchet wrench |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109702677A CN109702677A (en) | 2019-05-03 |
| CN109702677B true CN109702677B (en) | 2024-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910174816.9A Active CN109702677B (en) | 2019-03-08 | 2019-03-08 | Mushroom-shaped high-torque ratchet wrench |
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| CN (1) | CN109702677B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111256879A (en) * | 2020-03-20 | 2020-06-09 | 中铁工程装备集团有限公司 | Visual monitoring and early warning device for axial force of anchor rod and monitoring and early warning method thereof |
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| JP2002307318A (en) * | 2001-04-17 | 2002-10-23 | Kyoto Tool Co Ltd | Ratchet wrench |
| CN101920482A (en) * | 2010-09-29 | 2010-12-22 | 奇瑞汽车股份有限公司 | Wrench |
| CN107042482A (en) * | 2016-02-06 | 2017-08-15 | 黄智瑛 | High torsion fast driving ratchet spanner |
| WO2017164473A1 (en) * | 2016-03-25 | 2017-09-28 | 김태구 | Universal wrench |
| CN209599078U (en) * | 2019-03-08 | 2019-11-08 | 中铁工程装备集团有限公司 | A kind of high torque-force ratchet spanner of mushroom |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6912933B2 (en) * | 2003-04-11 | 2005-07-05 | Brian Knopp | Hydraulic torque wrench system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06666U (en) * | 1991-11-13 | 1994-01-11 | 株式会社山下工業研究所 | Ratchet wrench |
| CN2471482Y (en) * | 2001-04-06 | 2002-01-16 | 东莞市东坑佑耐汽保五金贸易部 | Bidirectional three jaw spanner |
| JP2002307318A (en) * | 2001-04-17 | 2002-10-23 | Kyoto Tool Co Ltd | Ratchet wrench |
| CN101920482A (en) * | 2010-09-29 | 2010-12-22 | 奇瑞汽车股份有限公司 | Wrench |
| CN107042482A (en) * | 2016-02-06 | 2017-08-15 | 黄智瑛 | High torsion fast driving ratchet spanner |
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| CN209599078U (en) * | 2019-03-08 | 2019-11-08 | 中铁工程装备集团有限公司 | A kind of high torque-force ratchet spanner of mushroom |
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| CN109702677A (en) | 2019-05-03 |
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Effective date of registration: 20231104 Address after: 450016 No. 99 Sixth Avenue, Zhengzhou economic and Technological Development Zone, Henan Applicant after: CHINA RAILWAY ENGINEERING EQUIPMENT GROUP Co.,Ltd. Applicant after: Hangzhou Future City Underground Space Planning and Design Institute Co.,Ltd. Address before: 450016 No. 99 Sixth Avenue, Zhengzhou economic and Technological Development Zone, Henan Applicant before: CHINA RAILWAY ENGINEERING EQUIPMENT GROUP Co.,Ltd. |
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