31results about How to "Lessen the squeeze" patented technology

The invention discloses a dynamic dehumidification device for drying plastic particles, and belongs to the technical field of plastic particle processing. Moisture on the plastic particles is absorbedand dried through magnetic dehumidification balls, and before the magnetic dehumidification balls absorb the moisture, magnet layers can magnetically absorb hollow magnetic balls, and after the magnetic dehumidification balls absorb the moisture to a certain degree, outer moisture absorption expansion layers absorb water and expands to extrude inner elastic magnetic shielding layers, inner elastic magnetic shielding layers are extruded to be tightly attached to the hollow magnetic balls, so that a certain magnetic shielding effect on the hollow magnetic balls is achieved; and the magnetic dehumidification balls are reset inwards under the action of extension springs, and after a drying part is dried and the outer moisture absorption expansion layers lose water, the inner elastic magneticshielding layers expand outwards to weaken the shielding effect on the hollow magnetic balls, when the magnetic attraction force of the magnet layers to the hollow magnetic balls is larger than the tensile force of the extension springs, the magnetic dehumidification balls are pulled to move outwards, reciprocating dynamic movement is matched with a rotating dehumidification cylinder, and the gooddehumidification effect on the plastic particles is effectively achieved.

The invention discloses a pile-side grouting device for an offshore large-diameter steel pipe pile. The pile-side grouting device comprises the pipe pile and grouting pipes fixed to the inner wall of the pipe pile. The upper ends of the grouting pipes are externally connected with a grouting platform. The lower ends of the grouting pipes are connected with grouting holes formed in the walls of the pipe pile, and the grouting holes are movably sealed. By the adoption of the pile-side grouting device for the offshore large-diameter steel pipe pile, a gap between the outer wall of the steel pipe pile and the surrounding coral reef layer can be filled with concrete effectively, and the effects that the bearing capacity of the steel pipe pile is improved, the settlement of the foundation pile is reduced and the cost is reduced are achieved. The pile-side grouting device for the steel pipe pile is affordable, suitable for being mounted at a construction site and convenient to apply and popularize, raw materials can be obtained easily, and the pile-side grouting device can be mounted and used by professionals at the construction site simultaneously with piling, the progress of a project can be saved effectively, and thus the pile-side grouting device is convenient to use and popularize.

The invention discloses an impeller rotary drum rotary-type steam box, which comprises at least one steam box single body, wherein the steam box single body comprises a box body; a steam groove is set inside the box body; a water chamber is set below the steam groove; a heating device is set on the bottom of the water chamber; an impeller is set inside the steam groove; a cloth containing cavity is set between two adjacent blades of the impeller; a cloth support device is set below the impeller; a roller and a cloth arranging device are set at an inlet side of the steam box above the impeller; and a cloth traction roller is set at an outlet side of the steam box above the impeller. According to the invention, under the loading of the intermittent rotation of the impeller, the steam box provided herein can be use for processing cylinder-shaped fabric with full width and also the fabrics are separated with segmentation by the blades of the impeller in the steam box; the slack degree of the fabric is high; and the fabrics between the adjacent blades will be displaced and become less crowded with the slow rotation of the impeller rotary drum, thus the steam effect is even and thorough.

The invention relates to a method for dealing with crooked and inverted frames of a hydraulic support by using a guide tunnel, comprising the following steps: 1) carrying out guide tunnel construction in front of the tilted or toppled hydraulic support; 2) using an I-shaped steel shed to reinforce the guide tunnel Support; 3) Pull the hydraulic support into the position of the guide tunnel; 4) Upright the hydraulic support in the guide tunnel. The beneficial effect of the present invention is that: the present invention adopts the principle of "controlling the roof first, suppressing roof caving, and then straightening the support", and implements the guide tunnel method to control the surrounding rock, that is, the coal wall is stripped ahead of the coal wall in the crooked frame area of ​​the working face , The stripping area adopts the combined use of anchor rods and steel ladders, the combined use of anchor cables and anchor cable beams, the rhombus net, and the combined support of single pillars and sheds.

A thermostatic element (1) comprises a cup (2) containing a thermo-expandable substance (3) and a piston (4) which is axially displaceable with respect to the cup by the action of the thermo-expandable substance produced during the expansion thereof. The guiding of the piston with respect to the cup and the sealing of the thermo-expandable substance are provided by the same arrangement of a single-piece holder (5) comprising a rigid insert (51) for guiding the piston which is embedded into a flexible envelop (52) impermeable to the thermo-expandable substance and is interposed between the insert, the piston and the cup. In order to provide a reliable sealing between the insert and the cup, including the case of assembling on an automatic line, the insert is provided with an abutment (51) which positions the single piece holder and projectingly extends towards the thermo-expandable substance away from the substantially flat part (51A) of the rest of the insert in a direction which is substantially parallel to the piston axis (X-X) and a space limited on the insert side oriented towards the thermo-expandable substance between the abutment and the flat part of the insert is filled with a corresponding part (52D) of the envelop which is pressed against the cup in a sealing manner.

The invention discloses a portable slope measuring device for hydraulic engineering construction survey, and relates to the technical field of engineering surveying, the portable slope measuring device comprises a bottom plate, the top of the bottom plate is provided with a mounting rack, one side of the mounting rack is provided with a lifting plate, the top of the bottom plate is provided with an angle adjusting device which is provided with a rotating plate, wherein the rotating plate is rotationally connected with one side of the lifting plate; a warning device which is provided with warning grooves, wherein the warning grooves are uniformly formed in the elastic rod; a stabilizing device which is provided with a mounting plate. The invention relates to the technical field of engineering measurement. According to the portable slope measurement device for hydraulic engineering construction survey, the purpose of widening the environment application range is achieved, the slope can be conveniently measured when the surface of the slope is uneven, the measurement precision is improved, warning and reminding can be conducted when angle deviation occurs in the measurement process, the stability is improved, and the gravity center can be ensured to be stable when the measuring part in the device moves.

The invention discloses a strong wind self-prevention system for a high-altitude advertising board. The system comprises a fixed plate; a groove is formed in the side wall of the fixed plate; the inner wall of the groove is rotatably connected with a plurality of display plates through a rotating shaft; the multiple display plates form a shutter type structure; a sliding plug cavity is formed in the side wall of the fixed plate; a sliding plug is slidably connected to the inner wall of the sliding plug cavity in a sealed mode; a vertical rod is fixedly connected to the upper end of the slidingplug; the upper end of the vertical rod penetrates through the upper end of the fixed plate and is fixedly connected with a wing-shaped plate; and a piezoelectric ring is fixedly connected to the topin the sliding plug cavity. A wing-shaped plate is driven by outdoor strong wind to slide upwards, and the pressing plate extrudes the piezoelectric rings, so that current is generated on the piezoelectric rings, magnetism is generated on the electromagnets, the permanent magnet blocks drive the display plates to rotate outwards under the action of magnetic repulsion of the electromagnets, strongwind flows out of gaps between the display plates, the advertising board is prevented from being damaged under the action of the strong wind, and the maintenance cost of the advertising board is reduced.

The invention belongs to the technical field of high polymer materials, and particularly relates to a polypropylene film which comprises a shell, a core and leading-out lines. The core comprises a substrate layers, metal film layers and a heat conduction layer. The two substrate layers are made of modified polypropylene resin films; the metal film layers are fixedly connected to both sides of thesubstrate layers through evaporation, and the area of the metal film layers is smaller than that of the substrate layers; the heat conduction layer is made of a heat conduction silicone grease material; the surfaces, away from the heat conduction layer, of the metal film layers are coated with an insulating paint layer; the metal film layers on two adjacent substrate layers are in a staggered state; the leading-out wires are respectively conducted with the metal film layers on the two substrate layers; the MAH graft modified polyethylene wax and the active manganese dioxide are added into thepolypropylene film, so that the softness of the prepared polypropylene film is effectively and remarkably enhanced, meanwhile, the active manganese dioxide is self-decomposed to release oxygen ions togenerate an aluminum oxide film, and the service life of a film capacitor is further prolonged.

The invention relates to a self-cleaning filtering device. The device comprises a tank body, wherein a cavity is formed in the tank body; the tank body comprises an upper necking part and a middle endpart, the diameter of an upper end cavity of the upper necking part is smaller than that of a lower end cavity, the lower end of the upper necking part is connected with the upper end of the middle end part, a filtering material is placed in the cavity, an inner cavity of the upper necking part is communicated with a water outlet pipe, and an inner cavity of the middle end part is communicated with a water inlet pipe. During working of the self-cleaning filtering device, the squeezed degree of the filtering material on the lower end surface of the upper necking part is small, the porosity islarge, and large-particle impurities can be filtered out; the squeezed degree of the filtering material on the upper end surface of the upper necking part is large, the porosity is small, small-particle impurities can be filtered out, and deep filtration can be effectively guaranteed.

The invention discloses a special medical hammer for a knee jerk reflex test. The special medical hammer comprises a hammer head, wherein a contact head is connected in the hammer head in a sliding manner, a fixed block is fixedly connected to the right side of the contact head, a two-section rod is rotationally connected in the fixed block, the right side of the fixed block is fixedly connected with a buffer spring, the bottom of the two-section rod is rotationally connected with a limiting rod, the right side of a transition box is fixedly connected with a communicating pipe, the side surface of the communicating pipe is fixedly connected with an auxiliary threaded rod, a rotating wheel is connected to the surface of the auxiliary threaded rod in an engaged manner, a squeezing block is connected to the right side of the rotating wheel in a sliding manner, the right side of the squeezing block is fixedly connected with a transmission toothed bar, and the side surface of the transmission toothed bar is connected with a wind shielding wheel in an engaged manner. Through cooperative use of the fixed block and the squeezing wheel, the special medical hammer for the knee jerk reflex test has the effects of automatically adjusting force during knocking and preventing pain and discomfort of a knocked person due to too large knocking force.

The invention discloses a paper packaging box convenient to fold and recycle. The paper packaging box comprises a main box body, concave soft grooves are formed in the connecting positions of vertical single faces of the main box body, the vertical single faces are connected with a bottom plate of the main box body in a clamped manner, first box covers are movably connected to the left side and the right side of the top of the main box body, second box covers are movably connected to the front end and the rear end of the top of the main box body, locking assemblies are arranged on the surfaces of the two first box covers, pasting plates are fixedly connected to the surfaces of the two second box covers, and pressure buffering balls are fixedly installed at the bottom of the inner wall of the main box body. Through cooperation of the above structures, workers can conveniently recycle the packaging box, normal transportation of the packaging box is quite convenient, stability of internal objects in the transportation process of the packaging box is guaranteed, the overall anti-collision and anti-extrusion capacity of the packaging box is enhanced, the situation that the objects in the packaging box are damaged is reduced, and convenience is brought to work of workers.

The invention discloses a crude oil transportation pipeline capable of preventing crude oil from precipitating. The crude oil transportation pipeline comprises a pipeline. A central shaft is arrangedinside the pipeline, an inclined fan is fixedly connected to the side surface of the central shaft, a centrifugal block is fixedly connected to the right side of the central shaft, a centrifugal bar is inserted into the side surface of the centrifugal block, a rotating shaft is meshed and connected to the side surface of the central shaft and positioned on the right side of the inclined fan, a bearing wheel is meshed and connected to the side surface of a bearing bar, a triangular bar is rotatably connected to the left side of a lever, a one-way toothed bar is rotatably connected to the top ofthe triangular bar, a push bar is slidably connected to the side surface of an air release bar, a limit bar is rotatably connected to the side surface of the push bar, and a moving air pipe is rotationally connected to the top of the limit bar. According to the crude oil transportation pipeline capable of preventing the crude oil from precipitating, the inclined fan cooperates with the centrifugal block for use, and therefore the effect that the crude oil in the pipeline is prevented from precipitating to form a precipitating wall when the crude oil is carried is achieved.

The invention discloses a side grouting device for large-diameter steel pipe piles on the sea, which comprises a pipe pile and a grouting pipe fixed on the inner wall of the pipe pile. The upper end of the grouting pipe is externally connected to the grouting platform, and the lower end It is connected with the grouting hole opened on the pipe pile wall, and the grouting hole is movable and sealed. The offshore large-diameter steel pipe pile side grouting device can effectively fill the gap between the outer wall of the steel pipe pile and the surrounding coral reef layer with concrete, so as to improve the bearing performance of the steel pipe pile, reduce the settlement of the foundation pile and reduce the cost ; The pile side grouting device for steel pipe piles is economical and applicable, suitable for installation on the construction site, easy to popularize and apply, and simple to obtain materials. Easy to promote and use.

The invention relates to exploration engineering, in particular to intelligent drilling acquisition equipment and system for geotechnical engineering investigation. The intelligent drilling acquisition system comprises a central control device and a drilling sampling device of drilling acquisition equipment, wherein the sampling device comprises a drill pipe with a sampling port, a collection cavity, a pull-back piece and a pull-back driving piece, the sampling port is communicated with the collection cavity, and the inner diameter of the collection cavity is not smaller than that of the sampling port, so that the extrusion of a soil sample entering the collection cavity through the sampling port is relieved, and the risk that the soil sample is damaged due to extrusion is improved. According to the invention, whether external force is needed to assist in pulling back the collection cavity or not is determined by monitoring the pushing pressure of a sealing plate from the soil sample, a processing module compares the pushing pressure with a first pressure threshold value, a first control signal is sent to a control module, a pulling-back driving piece is controlled to drive the sealing plate and a telescopic ring pipe to move, and the extrusion degree between the soil samples is relieved.

The invention discloses a digital printer capable of automatically positioning a spray head, and relates to the technical field of digital printers, the digital printer comprises a spray head, a mounting bottom plate and a spray head adjusting mechanism, and four corners of the periphery of the spray head are respectively provided with an L-shaped notch; the spray head adjusting mechanism comprises a positioning column, an X-direction adjusting assembly, a Y-direction adjusting assembly, a first elastic piece and a second elastic piece. According to the invention, the spray head translates in the Y-axis direction through the Y-direction adjusting assembly, and rotates through the X-direction adjusting assembly, so that the spray head can be straightened or reach a required deviation angle, the spray head can be accurately positioned, the adjustable range of the spray head is enlarged, the adjustment is flexible, and the precision is high; the defect that an existing adjusting device can only translate in two directions is overcome. In addition, the positioning column, the X-direction adjusting assembly, the Y-direction adjusting assembly and the first elastic piece are arranged in the L-shaped notches for storage, and the occupied space of the device is effectively saved.

The invention relates to the technical field of pathological staining, and discloses a staining device for pathological technology, the staining device comprises a base, the top end of the base is fixedly connected with a support column, the lower part in the support column is provided with a storage groove, the left side in the storage groove is communicated with the outside, and the storage groove is internally provided with a slide holder; a supporting plate is arranged at the top end of the supporting column, fixing rods are fixedly connected to the left side, the right side, the front side and the rear side of the top end of the supporting plate, an inserting hole is formed in the center of the top end of each fixing rod, a connector is arranged in the center of the inserting hole, and the bottom of each connector communicates with a hose. According to the device, a sample piece is directly dyed by externally connecting a coloring agent reagent bottle, so that a coloring agent does not need to be transferred when the device is used, the coloring agent is prevented from being polluted, meanwhile, the device can store the coloring agent for use next time, waste of the coloring agent can be avoided, and the device is high in practicability.

The embodiment of the invention discloses a radio frequency connector interface structure. The connector comprises a plug connecting end and a socket connecting end. The plug connecting end comprisesa plug inner conductor and a plug outer conductor wrapping the plug inner conductor. The plug inner conductor comprises a first contact section a second transmission section and a third reinforcing section in which the diameters are gradually increased, a conical structure of the first contact section realizes effective contact with a socket connecting end; the plug outer conductor comprises a connecting front part, a convex fixing part and an extending tail part in sequence corresponding to the plug inner conductor; a sealing ring is arranged between the connecting front part and the convex fixing part, an inclined guide block used for preventing deformation of an opening of the socket connecting end is arranged at the connecting position of the convex fixing part and the extending tail part, and the connecting front part, the convex fixing part and the extending tail part wrap the outer surface of the second transmission section and the outer surface of the third reinforcing sectionrespectively. According to the scheme, by optimizing the interface structure, the wall thickness of the outer conductor reaches 0.4 mm, and the problem of reliability caused by too small interface wall thickness of SSMC series connectors is solved.

The embodiment of the invention discloses a radio frequency connector interface structure. The connector comprises a plug connecting end and a socket connecting end. The plug connecting end comprisesa plug inner conductor and a plug outer conductor wrapping the plug inner conductor. The plug inner conductor comprises a first contact section a second transmission section and a third reinforcing section in which the diameters are gradually increased, a conical structure of the first contact section realizes effective contact with a socket connecting end; the plug outer conductor comprises a connecting front part, a convex fixing part and an extending tail part in sequence corresponding to the plug inner conductor; a sealing ring is arranged between the connecting front part and the convex fixing part, an inclined guide block used for preventing deformation of an opening of the socket connecting end is arranged at the connecting position of the convex fixing part and the extending tail part, and the connecting front part, the convex fixing part and the extending tail part wrap the outer surface of the second transmission section and the outer surface of the third reinforcing sectionrespectively. According to the scheme, by optimizing the interface structure, the wall thickness of the outer conductor reaches 0.4 mm, and the problem of reliability caused by too small interface wall thickness of SSMC series connectors is solved.

The invention belongs to the technical field of cervical vertebra extension and provides a mini-pneumatic self-help cervical vertebra correction and extension apparatus. The mini-pneumatic self-help cervical vertebra correction and extension apparatus comprises parallelly arranged sleeves, each sleeve is slidably provided with an extension pipe therein, one ends of the extension pipes are connected through a connecting rod while the other ends are located in the corresponding sleeves, one end of each sleeve is provided with a support plate, the support plates are used for supporting shoulders,and a lifting belt is arranged between the sleeves and are movably arranged on the extension rods to lift up the lower jaw. By the technical scheme, problems of tedious operation and inconvenient usein the prior art are solved.

The invention discloses a portable slope measuring device for water conservancy engineering construction survey, which relates to the technical field of engineering measurement and comprises a bottom plate, a mounting frame is installed on the top of the bottom plate, a lifting plate is installed on one side of the mounting frame, and The top of the top is provided with: an angle adjustment device, the angle adjustment device has a rotating plate, and the rotating plate is rotatably connected to one side of the lifting plate; a warning device, the warning device has a warning groove, and the warning groove is evenly opened on the elastic rod Inside: a stabilizing device, the stabilizing device has a mounting plate, and the invention relates to the technical field of engineering measurement. The portable slope measurement device for water conservancy construction survey achieves the purpose of improving the scope of application to the environment, and can conveniently measure the slope when the slope surface is uneven, improves the measurement accuracy, and can be used when the angle deviates during the measurement process. Provide warning reminders, improve stability, and ensure a stable center of gravity when measuring the moving position of parts inside the device.

The invention discloses a composite overrunning clutch. The composite overrunning clutch comprises a main overrunning clutch device and an auxiliary overrunning clutch device, a ratchet wheel and a pawl are adopted as a main clutch device transmission pair, the multi-pawl is used for improving the load capacity and reducing the circumferential size of the ratchet teeth, other types of overrunningclutch devices are adopted as auxiliary materials, meanwhile, a travel switching and amplifying mechanism, an engagement guide inclined plane, a pilot pawl, an avoiding clearance and the buffer mechanism are matched and used, the abrasion is reduced, the service life is prolonged, the collision is eliminated, the impact are reduced, the sensitivity are controlled, the transmission precision and the meshing direction angle are limited, and the application range are also improved.

The invention discloses a liftable and rotatable building construction support, comprising a base, a universal wheel is fixedly installed on the lower surface of the base, a plurality of counterweight blocks are installed on the side surface of the base, and the counterweight blocks are arranged along the The side surfaces of the base are equidistantly distributed, and a mounting groove is arranged in the center of the upper surface of the base. The bottom surface of the mounting groove is fixedly installed with a servo motor mounting seat, and a servo motor is fixed on the servo motor mounting seat. The rotating shaft is fixedly connected with the lower end of the transmission shaft through a coupling, the cross section of the transmission shaft is a polygon, and the upper end of the transmission shaft extends vertically upward from the upper surface of the base. The beneficial effects of the invention are that the structure has strong practicability and good stability.

The invention belongs to the technical field of fences, specifically a fence for child protection; it includes a shaping strip and a railing; the shaping strip is designed as a long strip; the head end and the end of the shaping strip pass through a block snap-fitting, and the shaping strip can be placed into various shapes; the lower surface of the shaping strip is fixed with uniformly arranged suction cups; the inner wall of the shaping strip is provided with a convex groove; the inner wall of the convex groove There are evenly arranged railings in the sliding connection; the present invention is mainly used to solve the problem that most of the current children's fences are of fixed-range design. When children are placed in the fence, the children will climb the fence. Since the children have no safety awareness, they may It will cause safety accidents. At the same time, most of the playpens are set in open places, and the shape of the playpen cannot be set according to the shape of the room, thereby reducing the use range of the playpen.

The invention relates to the technical field of burn nursing equipment, and discloses a clamping nursing device for limb burn plastic surgery, which comprises a semi-arc first clamping plate, the front side of the first clamping plate is provided with a semi-arc second clamping plate, and the left and right ends of the rear side of the second clamping plate are both provided with four slots. The inner walls of four slots formed in the surface of the second clamping plate are slidably connected with clamping plates fixedly connected with the front side of the first clamping plate, and a connecting mechanism is arranged in the slot formed in the surface of the second clamping plate. Through the arrangement of the connecting mechanism, legs with different thicknesses can be clamped by the device by adjusting a second clamping rod to be clamped in fixing grooves in different positions, meanwhile, medical staff only need to press a first clamping rod and then pull out a first clamping plate, the device can be disassembled, it is avoided that abrasive cloth needs to be frequently replaced, resource waste is reduced, and the practicability is high. Meanwhile, time waste of medical staff is reduced, and the practicability of the device is improved.

The invention discloses a liftable and rotatable building construction support which comprises a base. Universal wheels are fixedly installed on the lower surface of the base, a plurality of balancing weights are installed on the side surface of the base and distributed along the side surface of the base at equal intervals, and an installation groove is formed in the center of the upper surface of the base. A servo motor installation base is fixedly installed on the bottom surface of the installation groove, a servo motor is fixedly installed on the servo motor installation base, a rotating shaft of the servo motor is fixedly connected with the lower end of a transmission shaft through a coupling, the cross section of the transmission shaft is polygonal, and the upper end of the transmission shaft vertically and upwards stretches out of the upper surface of the base. The liftable and rotatable building construction support has the beneficial effects of being high in structural practicability and good in stability.

A thermostatic element (1) comprises a cup (2) containing a thermo-expandable substance (3) and a piston (4) which is axially displaceable with respect to the cup by the action of the thermo-expandable substance produced during the expansion thereof. The guiding of the piston with respect to the cup and the sealing of the thermo-expandable substance are provided by the same arrangement of a single-piece holder (5) comprising a rigid insert (51) for guiding the piston which is embedded into a flexible envelop (52) impermeable to the thermo-expandable substance and is interposed between the insert, the piston and the cup. In order to provide a reliable sealing between the insert and the cup, including the case of assembling on an automatic line, the insert is provided with an abutment (51) which positions the single piece holder and projectingly extends towards the thermo-expandable substance away from the substantially flat part (51A) of the rest of the insert in a direction which is substantially parallel to the piston axis (X-X) and a space limited on the insert side oriented towards the thermo-expandable substance between the abutment and the flat part of the insert is filled with a corresponding part (52D) of the envelop which is pressed against the cup in a sealing manner.

The invention belongs to the technical field of fences, and particularly relates to a child protection fence. The fence comprises shaping strips and fence boards, wherein the shaping strip is designedto be in a long strip shape. The head ends and the tail ends of the shaping strips are clamped through clamping blocks, and the shaping strips can be placed into various shapes. Suckers which are uniformly distributed are fixedly connected to the lower surfaces of the shaping strips; a convex groove is formed in the inner wall of the shaping strip; uniformly-arranged fence boards are connected into the inner walls of the convex grooves in a sliding mode. The invention mainly solves the problems that most of existing child fences are designed in a fixed range, so when children are placed in the fences, the children climb the fences, safety accidents are possibly caused due to the fact that the children do not have safety awareness, most of the child fences are arranged in open places, theshapes of the child fences cannot be set according to the shapes of rooms, and the use range of the children fence is reduced.

First-aid fixing equipment capable of reducing secondary injuries in trauma and fracture relates to the technical field of medical treatment and comprises a clamping piece, a first limiting sleeve is installed on the clamping piece, five inner threaded pipes are arranged at the end, close to the clamping piece, of the first limiting sleeve, a second elastic band is installed on the first limiting sleeve, and the second elastic band is connected with the clamping piece. The second elastic belt is in threaded connection with the corresponding inner threaded pipe through a threaded rod, the end, away from the first limiting sleeve, of the first elastic belt is elastically connected with the clamping piece, and the clamping piece is further limited through the first limiting sleeve and the second limiting sleeve by arranging the first limiting sleeve and the second limiting sleeve; according to the finger clamping device, the first limiting sleeve and the second limiting sleeve are arranged, so that when joints between the fingers and the palm center are bent, the first limiting sleeve and the second limiting sleeve are used for limiting the clamping piece, the clamping piece and the first limiting sleeve are detachably installed, and therefore the clamping pieces with different lengths are adopted according to different finger lengths.