318 results about "Left half" patented technology

The invention relates to the technical field of generators, and discloses a generator with an excellent heat dissipation effect, which comprises a shaft core, an inner core arranged outside the shaft core, a right half shell and a left half shell which are respectively arranged on the left side and the right side of a shell, and a heat absorption sleeve fixedly arranged outside the inner core, the stator is fixedly clamped between the right half shell and the left half shell, the stator is located outside the rotor and sleeved with the heat absorption sleeve, the inner hollow arc shell comprises an initial position and a set position, and when the inner hollow arc shell is located at the initial position, the inner hollow arc shell is parallel to the central axis of the shaft core. The temperature stability of the inner core is ensured by absorbing the local stability of the heat absorption sleeve, and when the temperature of the inner core is not uniform, the heat absorption sleeve is used for receiving, meanwhile, material aging caused by local overheating is prevented, the influence of thermal stress on the whole structure is reduced, the reliability and stability of equipment are improved, the service life of the equipment is prolonged, and high-performance operation of the equipment is kept.

The invention discloses a low-frequency vibration isolator, which belongs to the technical field of vibration isolators, has a quasi-zero stiffness characteristic, and comprises an upper end cover, a lower end cover, a negative stiffness vibration isolation assembly and a positive stiffness vibration isolation assembly, the negative stiffness vibration isolation assembly comprises a first spring vertically arranged in the center area, and the first spring is connected with the upper end cover and the lower end cover and is in an initial stretching state. The positive stiffness vibration isolation assembly comprises vibration isolation units located on the periphery of the first spring and distributed at intervals in the circumferential direction, each vibration isolation unit comprises a deformable connecting rod structure and a second spring in an initial stretching state, the upper end and the lower end of each connecting rod structure are connected with the upper end cover and the lower end cover correspondingly, and each connecting rod structure is provided with a left half part and a right half part which are oppositely arranged; the second spring is fixedly connected between the left half part and the right half part so as to pull the left half part and the right half part to shrink and deform inwards; the low-frequency vibration isolator has the technical effects that the size is small, the bearing capacity is high, the quasi-zero rigidity characteristic is achieved, and the low-frequency vibration isolator can be suitable for high-end manufacturing platform equipment.

The utility model discloses a convertible mounting structure for pipe bending equipment, which is characterized in that the left side and the right side of a connecting seat are respectively provided with a first connecting structure used for being connected with an explorator, and the left half part and the right half part of a bending seat are respectively provided with a second connecting structure used for being connected with the connecting seat; third connecting structures used for being connected with a pressing die are arranged on the left side and the right side of the sliding seat, and the convertible mounting structure for the pipe bending equipment aims at overcoming the defects in the prior art, is convenient to produce and improves efficiency.

The invention discloses an optical cable leading-down plugging device, and belongs to the technical field of optical cables, the optical cable leading-down plugging device comprises a shell and a first sealing assembly, the shell comprises a left half shell and a right half shell which are mutually butted and combined, and the same ends of the left half shell and the right half shell are provided with first semicircular grooves used for being tightly matched with an optical cable; the two first semicircular grooves are combined to form a first circular hole suitable for the optical cable to pass through, and the two second semicircular grooves are combined to form a second circular hole suitable for the steel pipe to pass through; the multiple first sealing assemblies are connected to the ends, close to the first semicircular groove, of the left half shell and the right half shell, the multiple first sealing assemblies are combined to form a circle and are arranged around the optical cable, and the first sealing assemblies are used for sealing a gap between the shell and the optical cable. The optical cable leading-down plugging device provided by the invention has the technical effects of long-term plugging effect, difficulty in falling, no need of regular maintenance, good stability and time and labor saving in installation.

The utility model discloses an insulating cover of a distribution network line lightning arrester. The insulating cover comprises a left half cover body and a right half cover body, one side of the left half cover body and one side of the right half cover body are connected with each other through a hinge structure, and the left half cover body and the right half cover body can rotate based on the hinge structure so that the left half cover body and the right half cover body can deviate from each other to be separated or can be folded and closed with each other; when the left half cover body and the right half cover body are mutually folded and closed, a first open hole is formed in the bottom, and the first open hole can fix the insulating cover between the umbrella skirts of the lightning arrester. Meanwhile, the left half cover body and the right half cover body can be mutually connected and locked through the lock catch structures arranged on the left half cover body and the right half cover body. According to the utility model, the left half cover body and the right half cover body can adopt an integrated modular design, the structure is simple, the left half cover body and the right half cover body can be connected and locked with each other through the lock catch structure during installation, and auxiliary fasteners such as pins are not needed, so that the installation is relatively convenient and rapid, and the live installation can be directly carried out when necessary.

This item is a leveling claw (component) used when leveling ground such as sand. This item has male threads on the outer peripheral surface of approximately half of the right side of the front view and approximately half of the left side of the back view. The item with the male threads is shown in the reference front view and reference back view showing the state with the male threads. This item is generally sold with multiple nuts pre-attached to the male threads of the mounting part, as shown in Reference Figure 1 showing the usage state. This item is used by attaching a predetermined number of items to the mounting part of a leveling work device via the mounting part, and then moving the working part to scratch the ground, as shown in Reference Figure 2 showing the usage state.

The invention discloses a multipurpose adjustable metal plate bending die and a working principle, and relates to the technical field of bending dies. According to the multi-purpose adjustable metal plate bending die and the working principle, the multi-purpose adjustable metal plate bending die comprises an angle adjusting structure and a pressing plate structure, a base is arranged on the lower side of the angle adjusting structure, a two-way worm is arranged in the base, transverse sliding blocks are arranged on the two sides of the two-way worm, the transverse sliding blocks are connected with a movable base, four guide rods are arranged in the base, and the movable base is connected with the movable base. Four guide sliding sleeves are arranged on the lower side of the movable seat and coaxially connected with guide rods, a connecting seat is connected to the upper side of the movable seat, a connecting plate is arranged on the upper side of the connecting seat and connected with a push rod, the push rod is connected with a rotary supporting plate in a hinged mode, and the rotary supporting plate is connected with a left half template and a right half template. And the left half template and the right half template are connected through a connecting shaft.

The utility model discloses a vertical crusher, which relates to the technical field of crushing mechanical equipment and comprises a rack, a driving motor is fixedly mounted on the left half part of the upper end of the rack, a first case is fixedly mounted on the right half part of the upper end of the rack, and a feed port is arranged at the upper end of the first case. By the adoption of the structure, the first machine box is installed at the upper end of the machine frame, the upper knife roll is installed on the first machine box, the left end of the second machine box rotates on the first machine box, and meanwhile the right end of the second machine box and the first machine box are installed and fixed through screws, so that the interior of the first machine box can be conveniently maintained; according to the structure, the crushing barrel is divided into two parts, the crushing effect is guaranteed, meanwhile, a user can conveniently maintain the first machine box, the second machine box and the upper knife roll in the machine box in the follow-up process to the maximum extent, and therefore the practicability of the crusher is greatly improved.

The I-shaped code comprises a left half part and a right half part which can be buckled with the left half part, one side of the left half part is provided with a first groove used for being installed on a zipper belt, the other side of the left half part is provided with a first concave part and a first protrusion which are used for being buckled with the right half part, one end of the left half part is provided with a first step, and the other end of the left half part is provided with a second step. The other end of the left half part corresponds to the right half part, a second groove used for being installed on a zipper belt is formed in the side, away from the left half part, of the right half part, and a second step is arranged at the end, corresponding to the first step, of the right half part, so that the zipper belts on the two sides can be sewn respectively. After sewing is completed, the left half part and the right half part are meshed through the puller, so that the zipper is closed, operation is convenient, and the sewing efficiency is further improved.

The utility model discloses a single stand column shifting machine which comprises a left bottom trundle seat, a front bottom stand column seat, a right bottom trundle seat, a single three-dimensional stand column, a left half seat, a right half seat and a seat cushion. The inner side of the left bottom trundle seat is detachably connected and fixed with the left side of the front bottom stand column seat in an inserted manner, and the inner side of the right bottom trundle seat is detachably connected and fixed with the right side of the front bottom stand column seat in an inserted manner; the bottom section of the single three-dimensional column is detachably connected and fixed to the top of the middle of the front bottom stand column base in an inserted mode. The front upper right corner of the left half seat is detachably hinged to the left side of the top of the single three-dimensional column, and the front upper left corner of the right half seat is detachably hinged to the right side of the top of the single three-dimensional column; a left half seat and a right half seat are arranged on the rear portion of the single three-dimensional column, the left half seat can horizontally rotate in the left circumferential direction relative to the single three-dimensional column, and the right half seat can horizontally rotate in the right circumferential direction relative to the single three-dimensional column. The seat cushion is detachably placed on a common seat plate of the left half seat and the right half seat; the product adopts a modular design, and each large part is packaged in a split manner, so that the packaging volume is convenient to compress.

This invention discloses a two-dimensional material transfer device and method. The device includes a base, with a first motor-driven angle adjustment unit fixed to the right half of the base; a cantilever is horizontally arranged to the left on a first slide, and a tape roll is located above the cantilever. A second ball screw assembly is horizontally arranged on the left half of the base, and vertical fixing frames are fixed to the front and rear sides of the second slide respectively; a support frame is located in the lower half between the two vertical fixing frames; a platform is located in the upper half between the two vertical fixing frames, and a height adjustment unit is located between the support frame and the platform; the platform is located below the tape pressure roller. This invention utilizes a multi-degree-of-freedom coordinated motion system consisting of a vertical displacement axis, a horizontal displacement axis, and a rotating axis that can drive the vertical axis to achieve continuous angle adjustment, enabling precise control of angle, speed, and roller pressure during the peeling and bonding process of two-dimensional materials.

The utility model belongs to the technical field of biological tissue slicing machines. A histotome shell convenient to disassemble and maintain is characterized in that the shell is mainly composed of a left half shell body, a right half shell body and a tray, the left half shell body is located on the left side of the right half shell body, and a cavity is defined by the left half shell body and the right half shell body; a left half chuck hole is formed in the middle right portion of the front face of the left half shell, a right half chuck hole is formed in the middle left portion of the front face of the right half shell, and the right half chuck hole and the left half chuck hole define a chuck hole. A right hand wheel hole is formed in the right side face of the right half shell, the bottom of the left half shell is an open end, bottom fixing screw holes are formed in the left front end and the left rear end of the bottom of the left half shell respectively, the bottom of the right half shell is an open end, and bottom fixing screw holes are formed in the right front end and the right rear end of the bottom of the right half shell respectively. The tray is located in the left concave face of the left half shell and the right concave face of the right half shell, and fixing inserting rods are arranged at the four corners of the bottom face of the tray respectively and inserted into the corresponding top face fixing holes. The shell is convenient to disassemble.

1. Name of the product in this design: Left half of a food packaging bag. 2. Application of this design: The entire product is used for food packaging; a portion of this design is used for food packaging bags. 3. The key design feature of this product is its shape. 4. The picture or photo that best illustrates the key design points: Design 2 3D diagram 1. 5. Design 2 is designated as the basic design. 6. Other situations requiring explanation: The dotted line portion of Design 1 does not require protection.

The invention discloses an automatic seedling-dropping intelligent seedling tray, which is composed of an integral seedling tray, a seedling tray connecting frame, a propulsion frame, a transverse propulsion system, a longitudinal propulsion system and a frame. The integral seedling tray is conical in shape and is divided into a left half tray and a right half tray along the center line of the cone. The left half tray and the right half tray can be opened and closed under the action of the transverse propulsion system. The seedlings in the seedling tray can automatically drop when the left half tray and the right half tray are opened, and return to their original positions when closed. The integral seedling tray and the seedling tray connecting frame constitute an integral seedling tray unit, and multiple rows of integral seedling tray units constitute a seedling tray combination. The seedling tray combination can realize longitudinal displacement under the action of the longitudinal propulsion system, so that the seedlings of the entire seedling tray combination can realize the purpose of automatic dropping. The effect is that the automatic dropping function of the seedlings is realized, labor is saved, and mechanical transplanting is convenient.

The utility model provides an auxiliary device for mechanical equipment installation, which relates to the field of mechanical equipment installation and comprises two groups of hoops clamped on the outer side of a pipeline, the hoops are rotatably connected on the inner side of a clamping seat through rotating shafts, and the inner sides of the left half piece and the right half piece of each hoop are in threaded connection with a plurality of screw groups for pushing and adjusting the position of the pipeline. The screw set comprises an angle adjusting bolt located above the inner side of the hoop and away from one side of the pipe orifice and a supporting adjusting bolt located below the inner side of the hoop and close to one side of the pipe orifice. The hoop is used for clamping the outer sides of two pipelines, the pipelines are preliminarily aligned, the center positions of the pipelines are adjusted by rotating the angle adjusting bolts, the horizontal adjusting bolts and the supporting adjusting bolts, and therefore the pipelines can be aligned, deviation generated during pipeline alignment installation is reduced, and the precision of pipeline butt joint installation is improved.

The utility model relates to the technical field of leisure beds, and discloses a foldable leisure bed which comprises a first bottom frame and a second bottom frame, the first bottom frame and the second bottom frame are distributed side by side in the left-right direction, and connecting pieces are arranged on the two sides of the butt joint ends of the first bottom frame and the second bottom frame. A first frame matched with the first bottom frame in size is fixedly installed on the top of the first bottom frame, a second frame is fixedly installed on the left half portion of the top of the second bottom frame, a third frame is arranged on the right half portion of the top of the second bottom frame, and the size after the second frame and the third frame are spliced is the same as the size of the first frame. According to the utility model, the position of the movable clamping block on the concave area of the second bottom frame is adjusted by lifting the third frame and changing the inclination angle of the connecting rod, so that the inclination angle of the third frame can be freely adjusted; and therefore, different users can use the device conveniently.

The utility model relates to the technical field of vehicle-mounted refrigerators, in particular to a shell structure which comprises a shell, a containing cavity with an opening in the front end is formed in the shell, the shell comprises a left half shell and a right half shell which are arranged left and right and spliced with each other, and the containing cavity is defined by the left half shell and the right half shell. The framework of the vehicle-mounted refrigerator is formed by combining the left half shell and the right half shell, the structure is simple and reasonable, assembling operation is convenient, the depth of the left half shell and the depth of the right half shell are small, the mold cost is low, demolding is easy, and the production cost of the vehicle-mounted refrigerator can be effectively reduced.

The utility model discloses a high-strength special-shaped steel pipe, which relates to the technical field of special-shaped steel pipes and comprises a left half pipe and a right half pipe, the left half pipe and the right half pipe are welded and connected, the left half pipe and the right half pipe are made of the same materials and are arranged in a mirror image manner, and a plurality of groups of locking hoops are welded on the outer walls of the left half pipe and the right half pipe. According to the high-strength special-shaped steel pipe, due to the fact that the high-strength special-shaped steel pipe is formed by welding the left half pipe and the right half pipe, the mode of double-face simultaneous welding or multi-person simultaneous welding can be adopted for symmetrical welding, and therefore a complex special-shaped steel pipe structure can be conveniently machined, and production efficiency can be remarkably improved.

The invention provides a drilling machine positioning device for rapidly clamping and positioning a bench vice, and belongs to the technical field of machining. One end of the left semicircular ring is detachably connected with one end of the right semicircular ring to form an annular structure which can be sleeved outside a drilling machine column; the other ends of the left semicircular ring and the right semicircular ring are detachably connected and are connected with a cam wrench through a columnar nut; a long groove extending in the axial direction of the left semicircular ring is formed in the inner side of the left semicircular ring, and the pressing block is arranged in the long groove in a sliding mode. One end of the long rod is used for being fixedly connected with the bench vice, and the other end of the long rod penetrates through an outer circular through hole formed in the left semicircular ring; the pressing block is provided with a first contact face and a second contact face, the first contact face is matched with the peripheral face of the long rod, and the second contact face is matched with the peripheral face of the drilling machine round stand column. When the cam wrench is rotated, the left semi-circular ring and the right semi-circular ring can be driven at the same time to clamp the drilling machine circular stand column, and the pressing block is driven to press the long rod. The problems that in existing drilling machine machining, the bench vice positioning and adjusting process is tedious, and efficiency is low are solved.

The utility model provides a heating shaping cap for perm, which comprises a main body, the whole main body is round, the main body is formed by connecting two cylinders, the lower half part of the main body is larger than the upper half part of the main body, the inside of the main body is hollowed, a round groove is arranged at the bottom of the main body, the outer wall of the round groove is fixed on the inner wall of the main body, and the bottom of the round groove and the bottom of the main body are on the same horizontal line. The interior of the circular groove is hollow, a telescopic circular pipe is arranged above the circular groove and is divided into a left half pipe and a right half pipe, the left half pipe of the telescopic circular pipe is fixed to the inner wall of the main body, the right half pipe of the telescopic circular pipe can move, the interior of the right half pipe is hollow, a spring is arranged in the right half pipe of the telescopic circular pipe, and fixing blocks are arranged at the two ends of the spring; the fixing block is connected to the left half pipe of the telescopic circular pipe.

The utility model discloses an automatic turn ratio changing current transformer which comprises a left shell and a right shell, the left shell and the right shell are spliced with each other, a left half shaft is arranged in the left shell, butt joint lugs are arranged at the two ends of the left half shaft, a right half shaft is arranged in the right shell, butt joint grooves are formed in the two ends of the right half shaft, and the butt joint grooves and the butt joint lugs are spliced with each other. Coils are installed on the left half shaft and the right half shaft, and the left shell and the right shell are spliced through the butt joint grooves and the butt joint lugs, so that installation of the left shell and the right shell is completed. The butt joint groove and the butt joint lug are spliced to form a circular structure, and the circular structure is used for placing a coil; the whole structure is easy to disassemble and assemble.

The utility model discloses a novel hard sealing floating ball valve which comprises a left half valve body and a right half valve body, a valve element installation hole is formed in the right half valve body, a valve element is arranged in the valve element installation hole, valve seats are arranged on the left half valve body and the right half valve body, first metal sealing rings are arranged on the opposite faces of the two valve seats, and compression springs are arranged at the side ends of the two valve seats. A second metal sealing ring is arranged at the left end of the right half valve body, a valve sleeve is welded to the right half valve body, a valve rod is matched with the valve sleeve, annular grooves are formed in the top and the bottom of a valve element, supporting flat plates are arranged on the left half valve body and the right half valve body, a universal coupler is arranged at the bottom end of the valve rod, a column block is arranged in the center of the top end of the valve element, and a square hole is formed in the column block. The top end of the universal coupling is fixed to the bottom face of the valve rod, and a square block is fixed to the bottom end of the universal coupling. The valve element can be pressed on the first metal sealing ring on the pressed side in a floating mode, the medium leakage prevention effect is better under the high-pressure medium application environment, and the valve element is worthy of application and popularization.

The present invention discloses a planter, which includes an annular cylinder that is vertically penetrated for soil to enter and exit. The annular cylinder includes a left half cylinder and a right half cylinder that are rotatably connected at the upper part, and the corresponding rotation axes of the rotational connection extend along the radial direction of the annular cylinder. A left extension arm extends upward from the upper left side of the left half cylinder. A right extension arm extends upward from the upper right side of the right half cylinder and is opposite to the left extension arm. A limiting member is located between the left extension arm and the right extension arm, and its left end is vertically movably constrained on the left extension arm, and its right end is vertically movably constrained on the right extension arm. Under the action of an external force, there are at least two states among the limiting member, the left half cylinder and the right half cylinder. When the user inserts the planter into the soil once, all the soil can be taken out, and the soil will not fall back into the planting hole again, which is convenient to operate and has a high efficiency in digging the planting hole.

The invention discloses an efficient and energy-saving vacuum coating machine which comprises a machine shell, two sets of sealing plates are fixedly installed in the machine shell and divide the machine shell into a left half part and a right half part, the right half part of the machine shell is partitioned into a sealing cavity by the two sets of sealing plates, a roughing pump and a high vacuum pump are fixedly installed in the left half part of the machine shell, and a vacuum pump is fixedly installed in the right half part of the machine shell. And the air exhaust ends of the roughing pump and the high vacuum pump penetrate through one group of sealing plates and are positioned in the sealing cavity, and a coating mechanism is glidingly mounted in the sealing cavity formed by sealing the two groups of sealing plates. Through the design of the coating mechanism and the cooling mechanism, the whole process of clamping, vacuumizing, coating and cooling is completed in a single sealing cavity through the collaborative design of'dynamic pump set switching + directional focusing heating + partitioned heat insulation and heat dissipation + negative pressure reinforced sealing ', energy loss of multi-cavity transition is reduced, invalid energy consumption is reduced through accurate control, and the production efficiency is improved. And unification of high efficiency, energy conservation and high-quality coating is realized.

The utility model provides a hanging basket high-altitude operation fixing arm, which relates to the technical field of hanging basket high-altitude operation and comprises a left connecting rod and a right connecting rod, the left connecting rod and the right connecting rod are detachably connected through a connecting piece, one end of the left connecting rod is provided with a left half clamping ring, and one end of the right connecting rod is provided with a right half clamping ring. According to the utility model, the balance stability of the hanging basket during construction operation can be better ensured.

The present invention discloses a high-strength steel wire mesh reinforced composite pipe, which is applied in the technical field of composite pipes. By setting a protection component, when an external impact occurs, it will strike the left half shell and the right half shell. The left half shell and the right half shell are buffered by a force receiving component. The impact is transmitted to the position of the push block through the connecting plate, driving the push block to move. The push block pushes the damping medium to flow through the flow holes to achieve a buffering effect, protecting the main structure of the pipe while reducing damage to the protection component.

The utility model relates to the technical field of cleaning equipment, in particular to roller way gearbox cleaning equipment. The device comprises an installation shell, a pair of upper sliding grooves are formed in the two sides of the inner top face of the installation shell, lower sliding grooves are formed below the two upper sliding grooves, the two lower sliding grooves are formed in the inner bottom face of the installation shell, and a plurality of movable grooves communicated with the upper sliding grooves are further formed in the top of the installation shell. Left half assemblies are movably arranged in the two lower sliding grooves, right half assemblies are movably arranged in the two upper sliding grooves, adjusting assemblies are arranged between the left half assemblies and the right half assemblies, driving assemblies are arranged on the left half assemblies and the right half assemblies, and mounting plates are symmetrically arranged on the front side and the rear side of the mounting shell; and a cleaning device is arranged on the mounting plate. The gear box cleaning device solves the problems that existing cleaning equipment is relatively single, gear boxes of different specifications and sizes cannot be cleaned, and only one face of each gear box can be cleaned during cleaning.

The utility model discloses a novel pipe pile pouring mold, including lower mould and upper mould, and upper mould is formed by left half mould and right half mould, and left half mould is hinged in one side of lower mould, and right half mould is hinged in the other side of lower mould, and the detachable connection of left half mould and right half mould is through a plurality of bolts, and lower mould both sides are equipped with a plurality of lifting lugs respectively. A kind of support frame of pipe pile pouring mold, including frame body and being equipped with the arc-shaped supporting groove on frame body, and arc-shaped supporting groove is matched with lower mould. The pipe pile pouring mold and its support frame of the utility model, clamping is quickly simple, can effectively avoid the condition that concrete is scattered in a large amount when concrete charging, reduce the workload of operator, reduce hoisting workload, improve the work efficiency of pipe pile moulding.

The utility model discloses a cavel-shaped pipe clamp which comprises a pipeline and a movable mechanism, the movable mechanism comprises a first base, a second base is arranged on the right side of the first base, and the top of the first base and the top of the second base are fixedly connected with a left half clamp and a right half clamp respectively. The top of the left half clamp and the top of the right half clamp are fixedly connected with a left claw handle and a right claw handle respectively, the inner wall of the left half clamp is movably connected with a movable rod, the front side and the rear side of the top of the movable rod are fixedly connected with limiting rings, and the tops and the bottoms of the inner sides of the limiting rings are fixedly connected with protruding blocks. When the pipe clamp is used, under the action of the movable mechanism and the fixed mechanism, the left half clamp and the right half clamp can be directly clamped on a pipeline, and then the screw rod is screwed by two hands at the same time, so that the installation speed is increased, parts are prevented from falling off, and the problem that an existing two-piece pipe clamp is prone to falling off due to the fact that the pipe clamp needs to be pressed by one hand and the screw rod needs to be screwed by the other hand is solved. Therefore, the device has the advantage of being convenient to install.

The utility model discloses a color master batch pelletizing device, relates to the technical field of color master batch pelletizing equipment, including frame and extruder, the left half part of frame is fixedly equipped with the workbin, the right side of extruder is equipped with the extrusion head, the right end of extrusion head extends into the workbin, the inside of the right end of extrusion head is rotatingly connected with the rotating shaft, the inside of the right end of extrusion head extends into the workbin, and the inside of the right end of extrusion head is rotatingly connected with the rotating shaft. A handle head is fixedly installed on the outer wall of the left end of the rotating shaft, tool holders are fixedly installed on the outer side of the handle head at equal angles, clamping blocks are arranged on the outer sides of the tool holders, and fixing bolts are symmetrically arranged on the inner sides of the clamping blocks. By the adoption of the structure, the clamping block is installed on the tool holder through the two fixing bolts, the fixing bolts penetrate through the blade, meanwhile, the clamping block can be matched with the tool holder to clamp and fix the blade, when the blade is replaced, the blade can be conveniently disassembled, assembled and used only by disassembling the fixing bolts and taking down the clamping block, and operation is convenient. Therefore, the use cost of the equipment can be greatly reduced.