CN217890810U - Portable manual wrench shear spanner - Google Patents

Abstract

The utility model discloses a spanner is cut to portable manual wrench relates to electric power construction equipment technical field. The wrench comprises a handle and an operating part arranged at the upper end of the handle, wherein a ratchet mechanism is arranged at the upper end of the handle, the operating part comprises an inner gear shell and a sun gear coaxially arranged in the inner gear shell, and the rear end of the sun gear is connected with a ratchet wheel in the ratchet mechanism. The sun gear on lie in the inner gear shell endotheca be equipped with the planet carrier, the planet carrier on be provided with two at least planet wheels along the circumferencial direction, the inboard and the sun gear of planet wheel mesh mutually, the outside of planet wheel with the inner tooth on the inner gear shell meshes mutually. The front end of planet carrier is provided with the inner skleeve, the internal gear shell in be located the outside of inner skleeve is fixed and is provided with the outer sleeve. The torsional shear wrench is small in size, convenient to carry and suitable for aerial work.

Description

Portable manual wrench shear spanner

Technical Field

The utility model belongs to the technical field of electric power construction equipment technique and specifically relates to a spanner is cut to portable manual wrench.

Background

High altitude construction is more general in the transmission line engineering, and along with the voltage level improves, iron tower height constantly increases, also puts forward higher requirement to the operation personnel thereupon, and the work degree of difficulty also is the geometric grade and increases.

At present, the iron tower bolt fastening and the acceptance check work are all completed manually, the cost of each item is extremely high, the acceptance check work is developed in a sampling inspection mode and is difficult to cover each bolt, the acceptance check work cannot achieve high-density coverage, and hidden dangers are buried for future safety production.

The torsional shear type bolt assembly is a bolt assembly for controlling pretightening force through mechanical positioning damage, and comprises a nut and a screw rod, wherein a bolt head is integrally formed at one end of the screw rod, a quincunx head is arranged at the other end of the screw rod for connection, and a fracture part with weak strength is arranged between the quincunx head and the screw rod. When the device is used, the nut and the quincuncial head of the screw rod are clamped through the locking tool, and then the nut and the quincuncial head of the screw rod are rotated reversely at the same time until the screw rod is broken at the broken part, so that the quincuncial head is screwed off, and a plate to be fixed is tightly pressed on the bolt head through the nut. The torsional shear type bolt assembly has the advantages that the pretightening force can be well controlled, and the pretightening force can be guaranteed to meet the requirements as long as the quincuncial head is twisted off. And this advantage has just catered to the requirement to bolt-up work in the iron tower construction, can directly detect through the range estimation when reaching moment of torsion intensity promptly, and the personnel of not checking and accepting are ascended a height and are checked and accepted one by one, reduce and check and accept the potential safety hazard.

However, the torsional shear type bolt assembly is not applied to the field of iron towers at present, and tools for fastening the torsional shear type bolt assembly are electric tools, so that the torsional shear type bolt assembly is large in size, heavy in weight and not suitable for overhead operation in iron tower construction.

SUMMERY OF THE UTILITY MODEL

In view of the above problem, the utility model provides a portable manual wrench shear spanner, this wrench shear spanner small in size conveniently carries, can be applicable to high altitude construction.

The utility model provides a technical scheme that its technical problem adopted is:

a portable manual torsional shear wrench comprises a handle and an operating part arranged at the upper end of the handle, wherein a ratchet mechanism is arranged at the upper end of the handle, and the operating part comprises an inner gear shell which is of a cylindrical tubular structure with an opening at the front end and a closed rear end;

a sun wheel is coaxially arranged in the inner gear shell, and the rear end of the sun wheel penetrates through the closed end of the inner gear shell and then is connected with a ratchet wheel in the ratchet wheel mechanism;

the planet carrier is sleeved in the inner gear shell on the sun gear and comprises an installation cylinder with an opening at the front end, and the inner space of the installation cylinder is sequentially divided into a first installation area and a second installation area from back to front by a partition plate;

at least two planet wheels are arranged in the first mounting area of the planet carrier along the circumferential direction, the inner sides of the planet wheels are meshed with the sun wheel, and the outer sides of the planet wheels are meshed with the inner teeth on the inner gear shell after penetrating through the side wall of the planet carrier;

be provided with in the second installing zone of planet carrier with turn round plum blossom head matched with inner skleeve of cutting the type bolt, the inner gear shell in be located the outside of inner skleeve is fixed be provided with set up in the nut matched with outer sleeve of cutting the type bolt soon.

Furthermore, the outer side surface of the inner sleeve is a stepped shaft and sequentially comprises a first shaft section and a second shaft section with diameters sequentially increased from front to back, a second inserting hole matched with the nut is formed in the front end of the outer sleeve, a positioning hole communicated with the second inserting hole is formed in the rear end of the outer sleeve, the diameter of the positioning hole is matched with the outer diameter of the first shaft section of the inner sleeve, and the first shaft section of the inner sleeve is inserted into the positioning hole.

Further, the sun gear from the back forward include transmission portion and location portion in proper order, just the diameter of location portion is less than the diameter of the addendum circle of transmission portion, the fixed holding ring that is provided with in location portion of sun gear, the first medial surface of dodging the hole of baffle is provided with annular third location boss, just the internal diameter of third location boss with the external diameter of holding ring is identical, the holding ring on be located be provided with between third location boss and the planet wheel and be annular fourth location boss, just the radius of fourth location boss with the addendum circle radius sum of planet wheel is greater than the centre of circle distance between sun gear and the planet wheel.

Furthermore, a fourth mounting hole which penetrates through the sun gear along the axial direction is formed in the sun gear, a mandril is arranged in the fourth mounting hole in a sliding mode, and a spring which is used for blocking the mandril from moving backwards relative to the sun gear is arranged between the mandril and the sun gear.

Furthermore, the ratchet wheel is provided with a third mounting hole matched with the cross section of the sun gear in shape, and the sun gear is provided with check rings on the rear side of the ratchet wheel and on the front side of the first end plate of the inner gear shell respectively.

Further, four planet wheels are uniformly distributed in the first mounting area of the planet carrier along the circumferential direction, and the planet wheels are rotatably connected with the planet carrier through rotating shafts.

Furthermore, an installation cavity is formed in the upper end of the handle, a ratchet wheel is rotationally arranged in the installation cavity, two pawls extending obliquely outwards and upwards are arranged in the installation cavity and located below the ratchet wheel, the lower end of each pawl is hinged to the handle, a pressure spring is arranged on the outer side of each pawl, a shifting block is rotatably arranged between the two pawls, when the shifting block is located at a first working position, the pawl located on the left side is tightly pushed against the ratchet wheel under the pushing action of the pressure spring, and the pawl located on the right side is separated from the ratchet wheel; when the shifting block is in the second working position, the pawl on the right side is tightly pressed on the ratchet wheel under the pushing action of the pressure spring, and the pawl on the left side is separated from the ratchet wheel.

Furthermore, the shifting block is provided with a hinged shaft, the hinged shaft penetrates through the rear side wall of the installation cavity and extends to the outside of the installation cavity, and a shifting lever is arranged on the hinged shaft and positioned at the rear side of the handle.

Furthermore, the outer sleeve is fixedly connected with the inner gear shell through a set screw, and a jacking hole for accommodating the set screw is formed in the outer sleeve.

Furthermore, the outer sleeve is provided with a second positioning boss, the inner gear shell is provided with a second positioning groove matched with the second positioning boss, the inner sleeve is provided with a first positioning boss, and the planet carrier is provided with a first positioning groove matched with the first positioning boss.

The utility model has the advantages that:

1. the torsional shear wrench is small in size, light in weight, convenient to carry and lighter in use, and therefore can meet the requirements of high-altitude operation in iron tower construction.

2. The torsional shear wrench is provided with the ratchet mechanism, so that unidirectional rotation can be realized, and the torsional shear wrench is more convenient to use.

3. The torsional shear wrench is provided with the ejector rod and the spring for pushing the ejector rod forwards, so that the twisted-off quincuncial head can be discharged under the pushing action of the ejector rod, the twisted-off quincuncial head does not need to be taken out manually, and the torsional shear wrench is convenient to use.

Drawings

FIG. 1 is a first perspective view of the wrench;

FIG. 2 is a schematic perspective view of the wrench;

FIG. 3 is a right side view of the present twist shear wrench;

FIG. 4 isbase:Sub>A sectional view A-A of FIG. 3;

FIG. 5 is a cross-sectional view taken along line B-B of FIG. 3;

FIG. 6 is a cross-sectional view taken at C-C of FIG. 3;

FIG. 7 is a schematic view of the internal structure of the wrench;

FIG. 8 is an enlarged view of the portion A of FIG. 7;

FIG. 9 is an enlarged view of the portion B of FIG. 7;

FIG. 10 is a schematic view of the present torque wrench;

FIG. 11 is a perspective view of the ratchet mechanism;

FIG. 12 is a first schematic view of the installation structure of the sun gear;

FIG. 13 is a second schematic view of the sun gear mounting structure;

FIG. 14 is a perspective view of the sun gear;

FIG. 15 is a perspective view of the inner gear case;

fig. 16 is a schematic perspective view of the planet carrier;

FIG. 17 is a schematic view of the mounting arrangement of the planet gears and planet carrier;

FIG. 18 is a perspective view of the inner sleeve;

fig. 19 is a perspective view of the outer sleeve.

In the figure: 1-a handle, 11-a first mounting groove, 12-a sealing plate, 13-a fixing screw,

2-internal gear shell, 21-first end plate, 22-first cylinder, 221-internal tooth, 222-second positioning groove, 23-fastening screw,

31-ratchet wheel, 311-rotating boss, 312-third mounting hole, 32-pawl, 33-pressure spring, 34-shifting block, 341-articulated shaft, 342-shifting lever,

41-sun wheel, 411-transmission part, 412-positioning part, 413-fourth mounting hole, 42-retainer ring, 43-positioning ring, 431-fourth positioning boss,

5-a planet carrier, 51-a second end plate, 511-a first mounting hole, 52-a second cylinder, 53-a clapboard, 531-a second mounting hole, 532-a third positioning boss, 54-a first avoiding hole, 55-a second avoiding hole, 56-a first positioning groove,

6-planet wheels, 61-rotating shafts,

7-an inner sleeve, 71-a first plug hole, 72-a first positioning boss,

8-outer sleeve, 811-second plug hole, 812-positioning hole, 813-concave part, 82-top tight hole, 83-second positioning boss,

91-top rod, 911-top pushing block, 912-baffle, 92-spring,

101-torsional shear type bolt, 1011-plum blossom head and 102-nut.

Detailed Description

Example one

For convenience of description, a coordinate system is defined as shown in fig. 1, and the left-right direction is taken as a transverse direction, the front-back direction is taken as a longitudinal direction, and the up-down direction is taken as a vertical direction.

As shown in fig. 1, 2 and 3, a portable hand wrench for twist shears includes a handle 1 and an operating member provided at an upper end of the handle 1.

As shown in fig. 7 and 15, the operating member includes an inner gear case 2. The internal gear casing 2 include a first end plate 21 that is circular structure, first end plate 21 on be provided with the perpendicular to first end plate 21 the cylindrical first barrel 22 that extends to the front side, just first barrel 22 with first end plate 21 coaxial arrangement, first end plate 21 and first barrel 22 form a front end opening rear end confined cylindrical tubular structure jointly. The first cylinder 22 has internal teeth 221 at the rear end of its inner cylindrical surface.

The upper end of the handle 1 is provided with a ratchet wheel 31 mechanism, and the ratchet wheel 31 mechanism only needs to adopt a ratchet wheel 31 mechanism in the existing ratchet wheel 31 wrench.

For ease of understanding, the specific structure of the ratchet 31 mechanism will now be described in detail. As shown in fig. 6 and 11, a first mounting groove 11 recessed to the rear side and a sealing plate 12 for sealing the first mounting groove 11 are formed on the front side of the upper end of the handle 1, and the sealing plate 12 and the first mounting groove 11 together form a mounting cavity. As a specific embodiment, in this embodiment, a fixing screw 13 is disposed on a rear side of the upper end of the handle 1, and an end of the fixing screw 13 passes through a rear sidewall of the first mounting groove 11 and is screwed with the sealing plate 12, and under a tightening action of the fixing screw 13, the sealing plate 12 is pressed and fixed on a front side of the upper end of the handle 1.

A ratchet wheel 31 is rotatably arranged in the mounting cavity. As a specific implementation manner, in this embodiment, the ratchet wheel 31 is provided with rotating bosses 311 with circular cross sections at the front and rear sides, the closing plate 12 and the rear side wall of the first mounting groove 11 are respectively provided with through holes for accommodating the rotating bosses 311, and the rotating bosses 311 are inserted into the through holes.

Two pawls 32 extending obliquely outwards and upwards are arranged in the mounting cavity below the ratchet wheel 31 (the opposite direction of the two pawls 32 is taken as the inner side), and the lower end of the pawl 32 is hinged with the handle 1. A pressure spring 33 is arranged in the mounting cavity and positioned on the outer side of the pawls 32 (taking the opposite direction of the two pawls 32 as the inner side). A shifting block 34 is arranged between the two pawls 32 in the mounting cavity, and the shifting block 34 is rotatably connected with the rear side wall of the first mounting groove 11. As a specific implementation manner, in this embodiment, a hinge shaft 341 is fixedly disposed on a rear side surface of the dial 34, and a free end of the hinge shaft 341 extends to an outside of the handle 1 through a rear side wall of the first mounting groove 11. The shifting block 34 has two working positions, when the shifting block 34 is in the first working position, the upper end of the pawl 32 on the left side is tightly pressed against the ratchet wheel 31 under the pushing action of the pressure spring 33, and the pawl 32 on the right side is separated from the ratchet wheel 31; when the shifting block 34 is in the second working position, the upper end of the pawl 32 on the right side is pressed against the ratchet wheel 31 under the pushing action of the compression spring 33, and the pawl 32 on the left side is disengaged from the ratchet wheel 31.

Further, a shift lever 342 for pushing the shift block 34 to rotate is fixedly disposed on the hinge shaft 341 at the rear side of the handle 1. Preferably, the distance between the driving lever 342 and the driving block 34 is equal to the thickness of the rear sidewall of the first mounting recess 11.

As shown in fig. 7, a sun gear 41 is disposed in the inner gear housing 2 and coaxially with the inner gear housing 2, and a rear end of the sun gear 41 passes through the first end plate 21 of the inner gear housing 2 and then is connected to the ratchet wheel 31 of the ratchet wheel 31 mechanism, and the sun gear 41 can rotate synchronously with the ratchet wheel 31. The first end plate 21 of the inner gear case 2 is provided with a first mounting hole 511 for receiving the sun gear 41.

As a specific embodiment, as shown in fig. 9, 11, 12, 13 and 14, the ratchet wheel 31 of the present embodiment is provided with a third mounting hole 312 penetrating the ratchet wheel 31 in the axial direction, and the cross-sectional shape and size of the third mounting hole 312 are matched with the cross-sectional shape and size of the sun gear 41. The rear end of the sun gear 41 is inserted into the third mounting hole 312, and the retainer rings 42 are respectively disposed on the sun gear 41 at the rear side of the ratchet wheel 31 and the front side of the first end plate 21 of the inner gear case 2, and the ratchet wheel 31 and the first end plate 21 of the inner gear case 2 are limited between the two retainer rings 42, that is, the ratchet wheel 31 and the inner gear case 2 are fixed on the sun gear 41 through the two retainer rings 42. In a specific embodiment, the retaining ring 42 in this embodiment is a shaft retaining ring 42, and the sun gear 41 is provided with a second mounting groove for accommodating the shaft retaining ring 42.

The sun gear 41 is positioned in the inner gear shell 2 and sleeved with a planet carrier 5. As shown in fig. 16, the planet carrier 5 includes a second end plate 51 having a circular structure, the second end plate 51 is provided with a cylindrical second cylinder 52 extending perpendicularly to the second end plate 51 toward the front side, the second cylinder 52 and the second end plate 51 are coaxially arranged, and the second end plate 51 and the second cylinder 52 together form a mounting cylinder with an open front end and a closed rear end. The installation cylinder in be provided with baffle 53, just baffle 53 will the inner space of installation cylinder divides into first installing zone and second installing zone from back forward in proper order. The second end plate 51 and the partition plate 53 are both provided with a first avoiding hole 54 for accommodating the sun gear 41.

As shown in fig. 7 and 17, at least two planet wheels 6 are uniformly arranged in the first mounting area of the planet carrier 5 along the circumferential direction, the inner sides of the planet wheels 6 are meshed with the sun gear 41, and the outer sides of the planet wheels 6 are meshed with the internal teeth 221 on the internal gear shell 2 after passing through the second cylinder 52 of the planet carrier 5. A second avoiding hole 55 for accommodating the planet wheel 6 is formed in the second cylinder 52 of the planet carrier 5.

As a specific implementation manner, as shown in fig. 5, in the present embodiment, four planet wheels 6 are uniformly arranged in the first mounting area of the planet carrier 5 along the circumferential direction. Preferably, a rotating shaft 61 is arranged in the planet wheel 6 coaxially with the planet wheel 6, the second end plate 51 and the partition plate 53 are respectively provided with a first mounting hole 511 and a second mounting hole 531 matched with the rotating shaft 61, and two ends of the rotating shaft 61 are respectively inserted into the first mounting hole 511 and the second mounting hole 531.

As shown in fig. 7, an inner sleeve 7 is coaxially disposed in the second mounting region of the carrier 5 and is engaged with the quincunx head 1011 of the torsional shear bolt 101, and the inner sleeve 7 has only a freedom to axially slide relative to the carrier 5.

As shown in fig. 18, the inner sleeve 7 is provided with a first insertion hole 71 penetrating through the inner sleeve 7 along an axis, and a cross-sectional shape and a size of the first insertion hole 71 are matched with a cross-sectional shape and a size of a quincunx head 1011 of a torsional shear bolt 101 of a corresponding type. A plurality of first positioning bosses 72 are uniformly arranged on the outer side surface of the inner sleeve 7 along the circumferential direction, and first positioning grooves 56 matched with the first positioning bosses 72 are arranged in the second mounting area on the inner side surface of the second cylinder 52 of the planet carrier 5.

As a specific implementation manner, in this embodiment, six first positioning bosses 72 are uniformly arranged on the outer side surface of the inner sleeve 7 along the circumferential direction, and six first positioning grooves 56 corresponding to the first positioning bosses 72 one by one are correspondingly arranged on the inner side surface of the second cylinder 52 of the planet carrier 5 in the second mounting area.

As shown in fig. 7 and 19, an outer sleeve 8 engaged with a nut 102 provided on a torsional bolt 101 is fixedly provided inside the inner gear housing 2 outside the inner sleeve 7. The outer sleeve 8 is provided with a second insertion hole 811, and the cross-sectional shape and size of the second insertion hole 811 are matched with those of the nut 102 of the corresponding model.

As a specific embodiment, the outer sleeve 8 in this embodiment is fixedly connected to the inner gear housing 2 by a set screw 23. As shown in fig. 4, a plurality of set screws 23 are uniformly arranged on the inner gear shell 2 along the circumferential direction, and the inner ends of the set screws 23 are pressed against the outer side surface of the outer sleeve 8. Preferably, four set screws 23 are uniformly arranged on the inner gear housing 2 along the circumferential direction in the embodiment.

Furthermore, a jacking hole 82 for accommodating the set screw 23 is formed in the outer cylindrical surface of the outer sleeve 8, and the jacking hole 82 is a blind hole.

Further, a plurality of second positioning bosses 83 are uniformly arranged on the outer side cylindrical surface of the outer sleeve 8 along the circumferential direction, second positioning grooves 222 matched with the second positioning bosses 83 are arranged on the inner side cylindrical surface of the inner gear shell 2, and the second positioning grooves 222 penetrate through the inner gear shell 2 forwards.

Preferably, the number of the second positioning bosses 83 and the number of the fastening screws 23 are the same, and the second positioning bosses and the fastening screws are arranged at intervals.

Further, as shown in fig. 7, 18 and 19, the outer side surface of the inner sleeve 7 is a stepped shaft, and includes a first shaft section and a second shaft section in sequence from front to back, the diameter of the first shaft section is smaller than that of the second shaft section, and the first positioning boss 72 is disposed on the second shaft section. The second inserting hole 811 is arranged at the front end of the outer sleeve 8, the rear end of the outer sleeve 8 is provided with a positioning hole 812 communicated with the second inserting hole 811, the diameter of the positioning hole 812 is matched with the outer diameter of the first shaft section of the inner sleeve 7, and the first shaft section of the inner sleeve 7 is inserted into the positioning hole 812.

The reason for this is that if there is no positioning structure between the inner sleeve 7 and the outer sleeve 8, the coaxiality between the inner sleeve 7 and the outer sleeve 8 can be ensured only by the assembling accuracy and the machining accuracy of other parts, and the meshing between the gears is gapped, so it is difficult to ensure the coaxiality between the inner sleeve 7 and the outer sleeve 8. According to the scheme, the positioning structure is arranged between the inner sleeve 7 and the outer sleeve 8, so that the coaxiality between the inner sleeve 7 and the outer sleeve 8 does not completely depend on the assembling precision and the machining precision of other parts, and the coaxiality between the inner sleeve 7 and the outer sleeve 8 can be effectively ensured.

Further, as shown in fig. 7, a circular recessed portion 813 is provided on the rear end surface of the outer sleeve 8, the diameter of the recessed portion 813 is larger than that of the second shaft section of the inner sleeve 7, and the positioning hole 812 is provided on the bottom surface of the recessed portion 813.

Preferably, as shown in fig. 19, the outer side surface of the outer sleeve 8 is in a stepped shaft shape, and includes a third shaft section and a fourth shaft section in sequence from front to back, and the diameter of the third shaft section is smaller than that of the fourth shaft section. The second positioning boss 83 and the jacking hole 82 are both arranged on the fourth shaft section.

Further, as shown in fig. 14, the sun gear 41 sequentially includes a transmission portion 411 and a positioning portion 412 from back to front, the transmission portion 411 is provided with external teeth that are matched with the third mounting holes 312 of the planet gear 6 and the ratchet 31, the outer side surface of the positioning portion 412 is in a cylindrical structure, and the diameter of the positioning portion 412 is smaller than the diameter of the addendum circle of the transmission portion 411. As a specific implementation manner, the diameter of the positioning portion 412 is smaller than the diameter of the root circle of the transmission portion 411 in this embodiment. As shown in fig. 8, the positioning portion 412 of the sun gear 41 is fixedly provided with a positioning ring 43 coaxially arranged with the sun gear 41, the inner side surface of the first avoiding hole 54 of the partition plate 53 is provided with an annular third positioning boss 532 coaxially arranged with the first avoiding hole 54, and the inner diameter of the third positioning boss 532 is matched with the outer diameter of the positioning ring 43. An annular fourth positioning boss 431 is arranged on the positioning ring 43 and behind the third positioning boss 532, and the sum of the radius of the fourth positioning boss 431 and the radius of the addendum circle of the planet wheel 6 is greater than the center distance between the sun wheel 41 and the planet wheel 6, that is, the fourth positioning boss 431 can block the planet wheel 6, so that the planet wheel 6 is prevented from slipping off from the sun wheel 41.

As a specific implementation manner, the positioning ring 43 in this embodiment is fixedly connected with the positioning portion 412 of the sun gear 41 by an interference fit.

Further, as shown in fig. 7 and 8, the sun gear 41 is provided with a fourth mounting hole 413 which penetrates the sun gear 41 in the axial direction, a jack 91 which can slide back and forth relative to the sun gear 41 is provided in the fourth mounting hole 413, and a spring 92 for preventing the jack 91 from moving back relative to the sun gear 41 is provided between the jack 91 and the sun gear 41.

As a specific implementation manner, the fourth installation hole 413 in this embodiment is in a step hole shape, and includes a first hole section and a second hole section in sequence from front to back, and a diameter of the first hole section is greater than a diameter of the second hole section. The front end of the ejector rod 91 is provided with a cylindrical ejector block 911, and the diameter of the ejector block 911 is larger than that of the ejector rod 91 and smaller than that of the first hole section. The ejector rod 91 is sleeved with a spring 92 in the first hole section, the front end of the spring 92 abuts against the ejector block 911, and the rear end of the spring 92 abuts against a step surface between the first hole section and the second hole section. The rear end of the post rod 91 is provided with a baffle 912 at the rear side of the sun gear 41.

As shown in fig. 10, in use, the outer sleeve 8 is first fitted over the nut 102, the inner sleeve 7 is fitted over the quincunx head 1011 of the torsional shear bolt 101, and the spring 92 is compressed by the pushing action of the quincunx head 1011. Then the wrench is turned to turn the inner sleeve 7 and the outer sleeve 8 in opposite directions until the heads 1011 of the said twist-shear bolts 101 are twisted off, and then the said twist-shear wrench is removed, at which time the heads 1011 in the inner sleeve 7 are ejected by the top rod 91 under the elastic force of the spring 92. Even if the quincunx head 1011 is caught in the inner sleeve 7 due to deformation and cannot be pushed out by the elastic force of the spring 92, the quincunx head 1011 can be pushed out by beating the shutter 912.

Example two

The positioning ring 43 is fixedly connected with the positioning portion 412 of the sun gear 41 by a threaded connection. The rest of the structure is the same as the first embodiment.

Claims (10)

1. The utility model provides a portable manual twist-shear spanner, include the handle with set up in the operating means of handle upper end, the upper end of handle is provided with ratchet, its characterized in that: the operating component comprises an inner gear shell which is in a cylindrical tubular structure with an opening at the front end and a closed rear end;

a sun wheel is coaxially arranged in the inner gear shell, and the rear end of the sun wheel penetrates through the closed end of the inner gear shell and then is connected with a ratchet wheel in the ratchet wheel mechanism;

the planet carrier is sleeved in the inner gear shell on the sun gear and comprises an installation cylinder with an opening at the front end, and the inner space of the installation cylinder is sequentially divided into a first installation area and a second installation area from back to front by a partition plate;

at least two planet wheels are arranged in the first mounting area of the planet carrier along the circumferential direction, the inner sides of the planet wheels are meshed with the sun wheel, and the outer sides of the planet wheels are meshed with the inner teeth on the inner gear shell after penetrating through the side wall of the planet carrier;

be provided with in the second installing zone of planet carrier with turn round plum blossom head matched with inner skleeve of cutting the type bolt, the inner gear shell in be located the outside of inner skleeve is fixed be provided with set up in the nut matched with outer sleeve of cutting the type bolt soon.

2. A portable hand twist shear wrench as claimed in claim 1, in which: the outer side of the inner sleeve is in a step shaft and sequentially comprises a first shaft section and a second shaft section, the diameters of the first shaft section and the second shaft section are sequentially increased from front to back, a second inserting hole matched with the nut is formed in the front end of the outer sleeve, a positioning hole communicated with the second inserting hole is formed in the rear end of the outer sleeve, the diameter of the positioning hole is matched with the outer diameter of the first shaft section of the inner sleeve, and the first shaft section of the inner sleeve is inserted into the positioning hole.

3. A portable hand twist shear wrench as claimed in claim 1, in which: the sun gear include transmission portion and location portion in proper order from the back forward, just the diameter of location portion is less than the diameter of the addendum circle of transmission portion, the fixed holding ring that is provided with in location portion of sun gear, the first of baffle dodges and is provided with annular third location boss on the medial surface in hole, just the internal diameter of third location boss with the external diameter of holding ring is identical, the holding ring on be located be provided with between third location boss and the planet wheel and be annular fourth location boss, just the radius of fourth location boss with the addendum circle radius sum of planet wheel is greater than the centre of circle distance between sun gear and the planet wheel.

4. A portable hand twist shear wrench as claimed in claim 1, in which: the sun gear is provided with a fourth mounting hole which penetrates through the sun gear along the axial direction, a mandril is arranged in the fourth mounting hole in a sliding mode, and a spring which is used for blocking the mandril to move backwards relative to the sun gear is arranged between the mandril and the sun gear.

5. A portable hand twist shear wrench as claimed in claim 1, in which: the ratchet wheel is provided with a third mounting hole matched with the cross section of the sun wheel in shape, and retainer rings are respectively arranged on the rear side of the ratchet wheel and the front side of the first end plate of the inner gear shell on the sun wheel.

6. A portable hand twist shear wrench as claimed in claim 1, in which: four planet wheels are uniformly distributed in the first mounting area of the planet carrier along the circumferential direction, and the planet wheels are connected with the planet carrier in a rotating mode through rotating shafts.

7. A portable hand twist shear wrench as claimed in claim 1, in which: the upper end of the handle is provided with an installation cavity, a ratchet wheel is rotationally arranged in the installation cavity, two pawls which extend obliquely outwards and upwards are arranged in the installation cavity and are positioned below the ratchet wheel, the lower ends of the pawls are hinged with the handle, a pressure spring is arranged on the outer side of each pawl, a shifting block is rotationally arranged between the two pawls, when the shifting block is positioned at a first working position, the pawl positioned on the left side is tightly pushed against the ratchet wheel under the pushing action of the pressure spring, and the pawl positioned on the right side is separated from the ratchet wheel; when the shifting block is in the second working position, the pawl on the right side is tightly pressed on the ratchet wheel under the pushing action of the pressure spring, and the pawl on the left side is separated from the ratchet wheel.

8. A portable hand twist shear wrench as claimed in claim 7, in which: the shifting block is provided with a hinged shaft, the hinged shaft penetrates through the rear side wall of the installation cavity and extends to the outside of the installation cavity, and a shifting lever is arranged on the hinged shaft and positioned at the rear side of the handle.

9. A portable hand twist shear wrench as claimed in claim 1, in which: the outer sleeve is fixedly connected with the inner gear shell through a set screw, and a jacking hole used for accommodating the set screw is formed in the outer sleeve.

10. A portable hand twist shear wrench as claimed in claim 9, in which: the outer sleeve is provided with a second positioning boss, the inner gear shell is provided with a second positioning groove matched with the second positioning boss, the inner sleeve is provided with a first positioning boss, and the planet carrier is provided with a first positioning groove matched with the first positioning boss.

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