109 results about "Free falling" patented technology

The invention discloses a tumble detection method, wearable equipment and a storage medium, relates to the technical field of tumble detection, and discloses a tumble detection method applied to the wearable equipment, the wearable equipment comprises an acceleration sensor and at least one other sensor except the acceleration sensor, the tumble detection method comprises the following steps: acquiring acceleration data acquired by an acceleration sensor based on a time sequence; if the acceleration data accord with the free falling acceleration performance in the first time period and accord with the impact rebound acceleration performance in the second time period, it is judged that a falling impact event is detected; in response to the falling impact event, obtaining a falling detection result determined based on detection data collected by other sensors; and if the tumble detection result is that the tumble event exists, triggering a tumble event response process. On the basis, when falling impact is detected, detection and identification are carried out based on other sensor parameters, so that the falling detection accuracy of impact caused by falling is improved.

The utility model discloses a microgravity experimental instrument which comprises a vertical framework, and a plurality of friction plates are installed on the front outer wall and the rear outer wall of the vertical framework in the vertical direction. The rising and falling platform body is installed at one end in the vertical framework in a sliding mode, and an experiment cabin is installed at the top end of the rising and falling platform body; and the belt wheel lifting units are installed on the two sides of the interior of the vertical framework and used for driving the lifting platform body to do accelerated lifting motion. According to the utility model, the active brake mechanism and the friction plate are matched to work to control the accelerated rising of the rising and falling platform body and the deceleration of the free falling body, experiment parameters are ensured to be within a required range, meanwhile, the active brake mechanism can increase the safety of an experiment, and especially in an emergency, the active brake mechanism and the friction plate can be used for an emergency stop experiment. And unnecessary damage or danger is avoided.

The invention discloses a trigger device and a trigger method for a free fall test of progressive safety tongs of an elevator, and relates to the technical field of elevator testing, the trigger device for the free fall test of the progressive safety tongs of the elevator comprises a pulley assembly, a traction rope, a fixing part, a sleeve and a blocking part; the pulley assembly comprises an upper pulley and a lower pulley; the traction rope is arranged between the upper pulley and the lower pulley in a sleeving manner and is provided with a first traction section; the fixing part is fixedly arranged on the first traction section so as to move up and down along with the traction rope, and the fixing part is used for being fixed to one end of the lifting rod; the sleeve sleeves the first traction section and is fixed with the traction rope through static friction force, the sleeve is positioned at the lower end of the fixed part, and a distance is reserved between the sleeve and the lower end of the first traction section; and the blocking part is positioned below the sleeve, is limited and is used for blocking the sleeve when the sleeve moves downwards along with the first traction section. According to the technical scheme, the problem that potential safety hazards exist due to the fact that an existing device needs to adjust the sleeve at high altitude can be solved.

The invention relates to a civil engineering device, in particular cable grab, with a support apparatus, a processing unit, which is configured to carry out a civil engineering step and is held by way of at least one cable on the support apparatus, at least one cable winch for operating the cable, wherein the cable winch has a winch drum and an associated winch motor for driving the winch drum rotationally, at least one free fall brake, which is arranged on the at least one cable winch, wherein in a closed state of the free fall brake, the winch drum is coupled to the associated winch motor, in a partially open state of the free fall brake, a relative movement is possible between winch drum and winch motor, wherein a torque that is dependent on the degree of opening of the free fall brake is transmitted in the free fall brake, and in an open state the winch drum is decoupled from the associated winch motor and is substantially freely rotatable with respect to this. It is provided according to the invention that an electronic control device is arranged for the controlled opening, partial opening and closing of the free fall brake by means of at least one control element, that a lowering speed and / or a lowering path can be preset as target values in the control device, that at least one detection device is arranged, which is configured to detect a lowering speed of the processing unit and / or a lowering path as actual values, and that the control device is connected to the at least one detection device and is configured to control opening, partial opening and closing of the free fall brake depending on the actual values detected so that the actual values approach the preset target values.

The present invention relates to a foundation detection device, and in particular to a foundation strength detection device for construction. It comprises a steel drill body, a core hammer, and a handle. The core hammer is slidably mounted on the steel drill body, and a handle is provided on the outside of the core hammer. The device is characterized in that it further comprises a limit device and an automatic reversing mechanism. A groove extending along the length of the steel drill body is provided on the side thereof, and a rectangular groove is provided at an eccentric position of the core hammer, which is connected to the center hole of the core hammer. The present invention achieves the one-way lifting, locking, and automatic release functions of the core hammer through the coordinated cooperation of the limit device and the automatic reversing mechanism. When the core hammer does not reach the standard height, the wedge block can automatically fit into the gap between the inverted trapezoidal blocks to prevent it from falling prematurely. When it is lifted to the set height, the automatic reversing mechanism rotates the wedge block and disengages the limit area, ensuring that the core hammer freely falls and hits the steel drill body at the standard height, ensuring that the energy of each impact is consistent.

The utility model discloses a height-adjustable free falling body testing machine, which relates to the technical field of falling experiments and comprises a stand column support, the stand column support comprises four supporting rods distributed in a rectangular shape, the top of the stand column support is fixedly connected with a connecting frame, and the connecting frame is connected with a lifting push rod motor. The lifting push rod motor is connected with an encoder and a stroke limiting device, and the output end of the lifting push rod motor is connected with a lifting plate. During use, the lifting push rod motor is arranged and is matched with the encoder, so that the lifting height of the lifting plate driven by the lifting push rod motor can be flexibly increased, the height of the release assembly can be flexibly adjusted, and a free fall test can be performed on a product at various different heights; and the falling height and the impact strength which can be borne by the product during falling can be more accurately detected, so that the flexibility of the free falling body testing machine and the accuracy of a testing result are improved.

The invention relates to the technical field of geological drilling, and discloses a geological prospecting directional drilling device which comprises a base, a material receiving assembly, a rotary disc and a limiting frame, the rotary disc and the limiting frame are arranged on the base, the rotary disc is cylindrical, and the geological prospecting directional drilling device further comprises a plurality of containing grooves which are evenly distributed in the rotary disc with the circle center point of the rotary disc as the center; and the two sliding rods are arranged in each placement groove, and the sliding rods are elastically and slidably connected with the placement grooves. According to the invention, the sections of the bearing pieces are L-shaped, in the descending process of the drill rod due to the self-weight effect, the limiting piece and the two bearing pieces can be tightly attached to the two ends of the drill rod and limit the freedom degree of the drill rod in the falling process, the falling track of the drill rod is guided through the sliding rod and the bearing pieces, and active inclination of the drill rod in the free falling process can be limited; and the falling track of the drill rod is forced to vertically fall relative to the base by taking the preset inclination angle of the base as a reference, so that lap joint or material blockage is avoided.

The utility model discloses a series-connection tensioning type falling mechanism and a gravimeter. The series-connection tensioning type falling mechanism comprises a falling bin, a series-connection rotating mechanism, a tensioning adjusting mechanism, two balance parts and a driving device. The falling prism is located in the falling bin. The serial rotating mechanism is in transmission connection with the two ends of the falling bin in the first direction; the tensioning adjusting mechanism is arranged at one connecting end of the falling bin and the serial rotating mechanism, and the tensioning adjusting mechanism is used for adjusting the tensioning force between the falling bin and the serial rotating mechanism; the two balance parts are in transmission connection with the series-connection rotating mechanism, symmetrically arranged on the two sides of the central axis of the falling bin and used for keeping the whole mass center of the series-connection tensioning type falling mechanism unchanged when the falling bin moves in the first direction; the driving device is connected with the serial rotation mechanism and used for driving the serial rotation mechanism to drive the falling bin to move in the first direction so as to achieve free falling motion of the falling prism in the falling bin.

A device for relieving the right shoulder muscles of a right-handed player when playing a stringed instrument, while simultaneously utilizing the resulting free fall force of the right arm to stabilize the instrument. The device consists of a body support that connects the upper bout of the instrument to the player's torso and an armrest that attaches to the rib of the upward-facing lower bout of the instrument, allowing the right upper arm to rest comfortably. When playing a stringed instrument, the right arm must be constantly held in a forward-raised and laterally abducted position due to the instrument's size, using muscle strength to prevent its weight from altering the instrument's playing position. The armrest allows the upper arm to rest comfortably, thus completely relieving the right shoulder muscles. The body support prevents the upper bow of the instrument from being levered forward and upward when the right arm, with its falling force, acts backward and downward on the lower bow. The device causes the force of fall released by the relaxation of the right shoulder muscles to clamp and fix the instrument between the arm, the leg on which it stands, the body support and the contact point between the base of the instrument and the upper body of the player.

The application discloses a climbing protection device of a power tower, relates to the field of power equipment, and can solve the problem of wasting manpower caused by repeatedly locking and unlocking the locking structure of the connecting safety belt during the process that workers climb the power tower. The power tower comprises a tower body and a climbing pole, the climbing pole comprises a supporting pole and a plurality of hand and foot poles, the climbing protection device comprises a fixing bin and a positioning piece, the fixing bin comprises an upward bin and a downward bin, the upward bin is provided with a first sliding groove, the positioning piece is embedded in the first sliding groove, one end of the positioning piece is connected with a hanging ring, the groove wall of the first sliding groove is connected with a plurality of first limiting components, the first limiting components are provided with limiting surfaces for limiting the downward sliding of the positioning piece, and the first limiting components are further provided with first guide surfaces for facilitating the upward movement of the positioning piece; the downward bin is provided with a second sliding groove, and the groove wall of the second sliding groove is connected with second limiting components for limiting the free falling of the positioning piece along the length extension direction of the second sliding groove.

The invention discloses a fractured rock mass anchor rod anchoring performance impact tensile test system and test method, and relates to the technical field of mechanical property testing. A high-strength spring energy storage mechanism, a double-drop-hammer impact mechanism and a fixed cross beam of the system are respectively mounted on a guide supporting polished rod, and the double-drop-hammer impact mechanism and an impact plate are fixedly connected or not fixed and are respectively used for an impact test of a momentum transfer method and an impact test of a drop-hammer free falling body method. The technical problem that existing test equipment cannot be compatible with two test methods is solved. The test system can be used for carrying out a tensile impact test on the axial anchoring performance of an anchor rod at a rock mass joint surface, switching and integration of an impact test of a momentum transfer method and an impact test of a drop hammer and free falling body method are realized, a tester can provide larger impact energy at a small height, and the test efficiency is improved. Meanwhile, the synchronism of drop hammer impact can be guaranteed, and the impact test system can be suitable for tensile impact performance tests of anchor rods in concrete filled steel tubes and large-size rock masses.

The present application relates to the field of sports testing equipment, and the dry snow landing buffer slope testing device based on dummy ejection impact test simulates the situation when the free-style skiing aerials athlete lands by a series of devices such as pressure gas output device, ejector, test dummy, roller slide carpet and air cushion device, the main process is to provide impact speed for the dummy by the ejector, to build 1:1 roller slide carpet air cushion buffer area at the terminal position, to simulate the impact process of the athlete landing link by the initial speed and impact angle, to accelerate the dummy to a certain speed and fly horizontally out by a set of ejection operation system to simulate the speed state when the free fall is about to contact the snow slope; the angle between the snowboard and the slope surface is simulated by adjusting the foot bottom height of the test dummy when the athlete lands each time; the inclination angle state of the real snow slope is simulated by laying the roller slide carpet with a certain inclination angle; and the mechanical properties of the snow ground are simulated by the air pressure of the air cushion device below the roller slide carpet.

The invention discloses a rotor forge piece forging device which comprises a base, and a die is arranged at the top of the base; the forging mechanism lifts the hammerhead and then releases the hammerhead in a free falling manner, and the hammerhead freely falls to the blank on the die; the adjusting mechanism comprises a spring and an adjusting assembly, and the adjusting assembly is used for adjusting the initial elongation of the spring; when the hammer head rises, the spring is stretched based on the initial elongation to accumulate corresponding potential energy, when the hammer head freely falls, the stored energy of the spring is released, the hammer head is pulled to fall in an accelerated mode, and hammer forging of blanks on the die is achieved in a reciprocating mode. When different types of rotor forgings are replaced and different hammer forging forces are needed, only the initial elongation needs to be rotated and adjusted, and operation is easy and convenient.

This utility model discloses an adjustable drop test device for metal components, belonging to the technical field of drop test devices. The adjustable drop test device for metal components includes a support base, on the top of which are mounted a vertical drop test component, a spill drop test component, and an adjustable drop impact platform component. The vertical drop test component includes four guide rods fixed to the top of the support base. This utility model, by setting up a horizontal vertical drop test component and a spill drop test component, uses the guide rods as a base and a lifting mechanism to adjust the height of the placement base, combined with a limiting structure to achieve a vertical free fall of the component, thereby simulating drop scenarios at different heights. The spill drop component allows the metal component to be thrown in a parabolic trajectory, recreating an accidental drop. Therefore, this device can simulate both vertical and spill drop scenarios of metal components, solving the problem of the limited functionality of existing drop test devices and improving its practicality.

The utility model discloses a falling-speed-adjustable water three-phase-point bottle support capable of preventing water from being damaged due to falling, and relates to the technical field of adjusting the falling speed of a water three-phase-point bottle through liquid resistance, the falling-speed-adjustable water three-phase-point bottle support comprises a water three-phase-point bottle and a tubular support shell, and the inner diameter of the support shell is larger than the outer diameter of the water three-phase-point bottle; the support shell is filled with liquid the same as the liquid thermostatic bath, an opening is formed in the top of the support shell, and the inner diameter of the support shell determines the discharging speed of the liquid in the support shell. The heat preservation liquid in the support shell can be used for discharging resistance, the free falling speed of the water three-phase-point bottle in the heat preservation liquid is reduced, and therefore the function of protecting the water three-phase-point bottle body and the protrusion at the bottom is achieved.

The invention discloses a device for acoustically detecting the height of a free falling body, and the device comprises a mobile control frame, the upper end of the mobile control frame is fixedly connected with an N-shaped lifting frame and a detection box, the detection box is located at the inner side of the N-shaped lifting frame, and the inner side of the N-shaped lifting frame is movably connected with a clamp. According to the device for acoustically detecting the height of the free falling body, a clamp is positioned on the inner side of an N-shaped lifting frame, a control motor drives an inner main rotating rod to drive a first bevel gear to rotate, and a second bevel gear on the outer wall of the first bevel gear can drive a vertical rotating rod and a control threaded rod to rotate; the lifting block controls the outer wall of the threaded rod to ascend and descend, meanwhile, the clamp is driven to ascend and descend on the inner side of the N-shaped lifting frame, the clamp can clamp an object to adjust different heights for falling detection, the initial falling height of the object can be accurately controlled, and personal errors caused by manual adjustment of the height of the object can be reduced.

The invention provides a repeated jettisoning test device and method. The repeated jettisoning test device comprises a rack, a jettisoning piece, a lifting assembly and a disengaging mechanism. The throwing piece is connected to the rack in a sliding mode and moves in the throwing direction, and the throwing piece is provided with a connecting end used for being connected with a hanging basket and a telescopic plunger; the lifting assembly drives the movable end of the lifting assembly to move upwards or downwards and is used for moving upwards to push the plunger to be lifted or moving downwards to push the plunger to retract. The separating mechanism is installed on the machine frame, and the separating mechanism is provided with an abutting end arranged on the lifting track of the plunger. A structure capable of repeatedly throwing the hanging basket is formed by the rack, the throwing part, the lifting assembly and the separation mechanism, the throwing part can be driven to carry out repeated actions during lifting and free falling throwing under the reciprocating action of the lifting action of the lifting assembly, a repeated throwing test of the hanging basket is carried out, separation of hoisted heavy objects below can be automatically completed, and the work efficiency is improved. Manual repeated hooking is avoided, and the circulation time is short.

The utility model discloses a free falling body device with an automatic homing function, which belongs to the technical field of falling test equipment and comprises a test board, a fixed bottom plate fixedly mounted on the test board and a test turntable rotationally mounted on the test board. The connecting frame has two axial rotational degrees of freedom through the rotating shaft I and the rotating shaft II; an angle adjusting assembly, an automatic homing assembly, a spring pushing assembly, an auxiliary jacking assembly and a holding rotating assembly are arranged on the test bench; and an encoder connected with the rotating shaft I is arranged on the bracket. Through the above mode, the free falling body rod is pushed by the spring pushing assembly to fall on the test rotating disc in a free falling body mode, and the free falling body rod can have an instantaneous speed of seven meters per second; the free falling body rod can rotate in the Y direction along with the rotation of the test rotating disc when making contact with the test rotating disc, the falling condition of the product under the moving condition is simulated, and the free falling body rod can automatically return to the standard position through the automatic returning assembly before the next falling test.

The utility model discloses a simulation device for a free fall experiment. The simulation device comprises a base, a bearing mechanism is arranged above the base, a top plate is arranged above the bearing mechanism, supporting frames are detachably arranged between the top plate and the bearing mechanism, and every two adjacent supporting frames are detachably connected. Two sets of timing mechanisms are detachably arranged on the inner side of the supporting frame, the two sets of timing mechanisms are distributed up and down, an electromagnet is arranged on the top plate in a penetrating mode, the electromagnet and the timing mechanisms are connected with a control box, and the control box is arranged on the base. The detachable base, the supporting frame, the top plate, the timing mechanism and the like are arranged, the device can be detached before the device needs to be transferred, the components can be transferred by teaching personnel, or a single component can be transferred by a plurality of students, the current situation that the device cannot be detached and needs to be cooperatively moved by a plurality of personnel is changed, and the practicability is high. Teaching personnel or students can conveniently transfer the teaching aid to classrooms of different floors.

The utility model provides an auxiliary mounting device for a sound barrier, and belongs to the field of sound barrier construction. According to the technical scheme, the construction operation fence comprises a forklift and a construction operation fence body arranged on fork arms of the forklift, a telescopic bracket is arranged on the construction operation fence body, the construction operation fence body comprises a bottom plate, a pair of rectangular insertion sleeves are arranged at the bottom of the bottom plate, the fork arms of the forklift are arranged in the rectangular insertion sleeves respectively, and guardrails are arranged on the peripheral edges of the bottom plate. A pedal is arranged between the peripheral guardrails and above the bottom plate, a position adjusting assembly is arranged below the pedal and on the bottom plate, and a pair of telescopic brackets is arranged on the position adjusting assembly. The utility model has the beneficial effects that the structure is simple, the use is convenient, the situation that the screen body is damaged due to collision caused by free falling is effectively avoided, and the mounting quality and efficiency are improved.

The steam turbine nut dismounting anti-falling device comprises a lifting rod, a first installation hole is formed in the bottom face of the lifting rod, a first hanging rod is fixedly installed on the first installation hole, and a first hook is hung on the first hanging rod; and an anti-falling disc is arranged below the lifting rod. A second mounting hole is formed in the surface of the anti-falling disc, a second hanging rod is fixedly mounted on the side wall of the second mounting hole, and a second hook is arranged on the second hanging rod. The second mounting hole is located in the center of the anti-falling disc. The length of the lifting rod is larger than the diameter of the anti-falling disc. The anti-falling device has the advantages that the chain can be hung, the anti-falling disc is connected with the chain from the bottom of the stud, the risk that the stud and a nut fall off due to free falling when the vertical high-temperature stud is disassembled can be effectively prevented, use is safer and more reliable, safety of operators is guaranteed, the height can be adjusted at will, operation is more flexible, and the anti-falling device is suitable for popularization and application. The application range is wide.

The utility model discloses a through hole crushing device for a vertical blast hole. The through hole crushing device comprises a hammer head, a balancing weight, a drop hammer sheath and a hammering rod, the hammer head is in a cross cone shape; the balancing weight is cylindrical, and the lower end of the balancing weight is detachably connected with the hammer head; the lower end of the drop hammer sheath is detachably connected with the upper end of the balancing weight; and the hammering rod is arranged in the drop hammer sheath in a sliding manner. According to the utility model, a combined type crushing principle, namely a free falling body and secondary hammering mode, is adopted, so that the crushing efficiency is obviously improved, and the energy consumption is reduced at the same time; the device is ingenious in design, easy and convenient to operate and capable of rapidly dealing with crushing operation of various hard rock stratums, and the working efficiency of a construction site is greatly improved. And in addition, the manufacturing cost is relatively low, maintenance is easy, and the application range is wide.

The utility model discloses a digital engineering investigation in-situ testing device, which relates to the technical field of geological drilling and comprises a drill tower and a hydraulic lifting device, a driving device is mounted on the hydraulic lifting device, and a striking device is connected onto the hydraulic lifting device through the driving device; the striking device comprises a guide rod, a hammering seat, a standard penetration hammer and a lifting block, and a hammer lifting device is arranged between the standard penetration hammer and the lifting block; according to the design, the stepped groove is formed in the guide rod to be matched with the hammer lifting device, it can be ensured that the standard penetrating hammer freely falls down to hammer the hammering base after rising to the designated position, the striking operation is completed, excessive manual operation is not needed, time and labor are saved, and safety and reliability are achieved; the problem that in traditional standard penetration operation, a standard penetration hammer needs to be lifted through winch lifting and manual rope hanging is solved.

The elevator landing door counter weight assembly comprises a guide assembly and a landing door counter weight, the landing door counter weight moves under the guidance of the guide assembly through traction of a steel wire rope, the guide assembly comprises a guide piece and a guide frame, and the guide piece is arranged on the guide frame in a hooping mode so as to be fixed to an elevator landing door system through the guide frame; the landing door heavy hammer comprises a heavy hammer body and a blocking piece arranged on the heavy hammer body. The blocking piece is located above the gravity direction of the guiding piece, and when a steel wire rope pulling the heavy hammer body to move is broken, the guiding piece supports the blocking piece to prevent the heavy hammer body from falling off. According to the heavy hammer, the blocking piece is arranged on the heavy hammer body and located above the gravity direction of the guide piece, and when the steel wire rope is broken and the heavy hammer body freely falls, the guide piece supports the blocking piece to prevent the heavy hammer body from continuously moving, so that the heavy hammer body is prevented from continuously falling and falling, and the service life of the heavy hammer body is prolonged. Other structural components of an elevator system are damaged; and the personal safety of elevator pit maintenance personnel is threatened.

The present application relates to a kind of multifunctional angle-changing slamming tower for ship bow free-fall slamming test, comprising top frame, left and right sides of the top frame are respectively provided with left arm frame and right arm frame, the inside of the left arm frame is provided with left rotating rotary frame, the inside of the right arm frame is provided with right rotating rotary frame, the middle part of the left arm frame is provided with linear guide rail angle drive mechanism for controlling the rotation of left rotating rotary frame, the left side surface of the left arm frame is provided with arc plate, and the arc plate is provided with rotating positioning hole for controlling the rotation of left rotating rotary frame;Electromagnet, movable module and variable heeling device are sequentially arranged below the middle part of the top frame, left and right sides of the movable module are provided with left support frame and right support frame, and the side surface of left rotating rotary frame, right rotating rotary frame, left support frame and right support frame is provided with linear guide rail.The present application can realize angle-changing and height adjustment of free-fall slamming test without changing tooling.

The invention relates to the technical field of standard steel anvil or sample rebound value measurement, and discloses a free falling type rebound value measuring device and method for a rebound apparatus equivalent body, and the device comprises a rack, the rebound apparatus equivalent body, a vertical rod positioning mechanism, a rebound apparatus equivalent body locking mechanism pair and a data acquisition and processing system. A dynamic force measuring platform is arranged at the bottom of a rack, a standard steel anvil or a sample is placed on the dynamic force measuring platform, vertical rod positioning mechanisms are arranged on the two sides of the standard steel anvil or the sample, a rebound apparatus equivalent locking mechanism pair is installed on the vertical rod positioning mechanisms, and a rebound apparatus equivalent is installed above the standard steel anvil or the sample through the vertical rod positioning mechanism pair. Height adjustment and locking are carried out through a rebound apparatus equivalent body locking mechanism pair, and a rebound value measuring system collects the collision and movement process of the elastic hammer and carries out data transmission and rebound value calculation. As the springback value is measured in a non-contact manner, the structure is simple, the interference is less, and the measurement result is stable and reliable, as shown in figure 1.

The utility model provides a lifting device and a crane with the lifting device, and the lifting device comprises a mounting seat, a lifting mechanism and a lifting mechanism, the hoisting mechanism comprises a winding drum and a rope, the winding drum is rotatably arranged on the mounting seat, the rope is wound on the winding drum, and the rope is connected with a hoisted piece; the driving piece is in driving fit with the drum; the speed reducing structure is arranged between the driving piece and the winding drum; the braking structure is provided with a braking position and an avoiding position, and when the braking structure is located at the braking position, the braking structure is in braking fit with the speed reduction structure; the tension sensing piece is arranged on the rope; the controller is in signal connection with the driving part, the braking structure and the tension sensing part; and when the lifted piece is in the free falling working mode and the measured value of the tension sensing piece is smaller than or equal to the preset force value, the braking structure is switched to the braking position from the avoiding position. According to the technical scheme, the problem that in the prior art, when a lifted piece freely falls, the rotating stopping time of the winding drum cannot be accurately controlled is effectively solved.

The utility model relates to the technical field of planting equipment, and discloses a soil compaction device for cinnamomum camphora planting, which comprises a frame, the front side of the upper surface of the frame is provided with a through groove, a compaction block is arranged in the through groove and is of an annular structure, the side wall of the front end of the compaction block is provided with an inlet / outlet, and the inlet / outlet is communicated with the through groove. A guide mechanism is arranged on one side of the compaction block, a lifting mechanism is arranged on the other side of the compaction block, the lifting mechanism is composed of a second stand column, a sliding block, a clamping block and a limiting block, the second stand column is fixedly installed at the upper end of the vehicle frame, and the sliding block is installed in a sliding groove formed in the second stand column in a sliding mode. Through the arrangement of the compaction block, the lifting mechanism and the guide mechanism, the compaction block can be controlled to ascend to a certain height and then hit the ground in the free falling body direction, so that soil compaction work is completed rapidly and efficiently, manpower is not needed, and compaction is more uniform.