30results about How to "Prevent backward tilt" patented technology

The invention provides an intelligent bed chair, which comprises a bed body, a wheelchair and a connecting device, wherein the bed body and the wheelchair are in embedded connection via the connectingdevice; the connecting device comprises a bed head locking mechanism, a bed tail locking mechanism, bed-entry guide wheels and a bed-entry guide rail; the bed head locking mechanism is arranged at the front side of the fixed wheelchair on the head of the bed body, and the bed tail locking mechanism is arranged at the back of the fixed wheelchair on the tail of the bed body; the bed-entry guide wheel is arranged at the same side of the bed head locking mechanism; the bed-entry guide wheels are arranged at two sides of a side plate on the tail of the wheelchair; and through the bed-entry guidewheels and the bed-entry guide rail, bed-entry guidance of the wheelchair is achieved. The intelligent bed chair is characterized by further comprising a backward tilting preventing mechanism, whereinthe backward tilting preventing mechanism is arranged on a hub of the wheelchair. According to the intelligent bed chair provided by the invention, by arranging the backward tilting preventing mechanism, a circumstance that the wheelchair, which drives on a slope, for example greater than 15 degrees, can be effectively prevented from titling backwards, so that personal safety is guaranteed.

The invention discloses a back-tilting prevention device of a dynamic compactor. The back-tilting prevention device comprises a back-tilting prevention oil cylinder of which two ends are respectively connected to an arm support and a base of the dynamic compactor. Back-tilting of the arm support of the dynamic compactor is prevented through a hydraulic device. The invention also discloses a back-tilting prevention system of the dynamic compactor and the dynamic compactor. The rigidity of the back-tilting prevention device is controlled by controlling the pressure of a hydraulic oil path, so that the rigidity of a back-tilting oil cylinder is adjusted according to a specific working condition of the dynamic compactor; therefore, the back-tilting prevention device has different rigidities under different working conditions, a proper buffering effect is achieved, and the safety of the dynamic compactor is improved.

The invention relates to a walking type scoliosis traction device. A traction support is composed of a hand guided walking support, an adjustable supporting frame and a spring type gravity traction device. The hand guided walking support is composed of front wheels, rear wheels, rear protection wheels, a front wheel rod, a rear wheel rod, a bottom U-shaped rod, an upper U-shaped rod, a screwing type height adjusting rod and a handle. The adjustable supporting frame is composed of a bottom rod, an upper rod, a height adjusting nut, a ferrule, a top bent rod and a front fork. According to the device, a dragged person can also be subjected to traction treatment in an upright walking state, so that the large living freedom degree is kept, weights, sandbags and other heavy objects are not needed in the traction process, self gravity is used as traction force, the equilateral three-fork type high-precision spring combination enables the traction force to be flexible and stable, and a pulleyblock and a traction rope are convenient for a patient to self-adjust and remove the traction force, so that the simplicity, convenience and safety of traction operation are greatly improved.

The invention relates to an orthopedic device for spinal deformity non-surgery treatment in spine surgery, in particular to a spinal deformity sitting-position traction device without a counter weight and with traction force visualized. The spinal deformity sitting-position traction device without the counter weight and with the traction force visualized comprises a suspension support, a lower traction belt, a take-up traction lifting mechanism and an electronic tension meter. The take-up traction lifting mechanism comprises an upper traction belt which can be taken up and tensioned. The suspension support is composed of a suspension rod, a standing rod, an inclined rod, upper connecting rods and lower connecting rods which are connected. One end of the suspension rod is fixedly connected to the top end of the standing rod. The inclined rod is connected between the suspension rod and the standing rod, so that a triangular stable supporting structure is formed. The standing rod is connected to the back side of a wheelchair through the upper connecting rods and the lower connecting rods. The take-up traction lifting mechanism is hung at the other end of the suspension rod. The tail end of the upper traction belt is connected to the upper end of the electronic tension meter. The the spinal deformity sitting-position traction device without the counter weight and with the traction force visualized has the advantages that due to the fact that the take-up traction lifting mechanism without the counter weight and the electronic tension meter are adopted and the counter weight of the existing traction device is omitted, the activity and the safety of the traction device are improved, and visualized accurate control of the traction force can also be achieved.

The invention discloses a dust collector, belongs to the technical field of household appliances and solves the problem of inconvenience in operation of a dust collector in the prior art. The technical scheme for solving the problem mainly comprises a handle assembly and a dust collecting assembly. The handle assembly includes a handle and a connecting pipe connected at the front end of the handle. A wind inlet is arranged at the front end of the connecting pipe. The dust collecting assembly is connected onto the handle assembly. The dust collecting assembly includes a dustbin, a motor and a battery. The dustbin has an air inlet and an air outlet. The motor and the battery are electrically connected. The dustbin, the motor and the battery are arranged in sequence from the back to the front. The air inlet of the dustbin communicates with the rear end of the connecting pipe. The dustbin is located behind the connecting pipe. A wind outlet communicating with the air outlet is arranged inthe front end of the dust collecting assembly. The wind outlet is located in front of the motor. The dust collector in the invention not only reduces the holding force of an arm holding the handle tomake the user's operation more flexible and effortless, but also facilitates the heat dissipation of the motor.

The invention relates to the field of hoisting equipment, in particular to an extensible type hoisting equipment counterweight mechanism. The extensible type hoisting equipment counterweight mechanism comprises an outer extending mechanism, an inner extending mechanism and a driving scissors fork assembly. The driving scissors fork assembly is arranged on a balance arm of hoisting equipment, the outer side of the driving scissors fork assembly is connected with the outer extending mechanism, and the inner side of the driving scissors fork assembly is connected with the inner extending mechanism. A counterweight is arranged at the outer end of the outer extending mechanism. The driving scissors fork assembly is driven to open and close through swinging of a hoisting boom of the hoisting equipment. The driving scissors fork assembly opens and closes to drive the outer extending mechanism to stretch out and draw back. The driving scissors fork assembly drives the inner extending mechanism to open and close. According to the extensible type hoisting equipment counterweight mechanism, the horizontal moving distance of the counterweight is substantially increased by means of the space scaling characteristic of an extensible structure, the balance bending moment of the top of a tower body is effectively reduced, the requirements for stability and static rigidity of a tower crane are met, dynamic performance is more outstanding, materials are saved, power dissipation is reduced, and the hoisting weight of the hoisting equipment is substantially increased.

The invention relates to a wheel type crane buffer type anti-back-tipping device which comprises a mounting seat, an impacting bar, a spring and a contact switch; the mounting seat is fixed on a crane and just behind a crane arm stand; a groove hole is formed in the mounting seat; the contact switch is arranged in the center of the bottom of the groove hole; the spring sleeves the outer side of the contact switch; one end of the spring is fixed at the bottom of the groove hole; the other end of the spring is fixed on the impacting bar; the other end of the impacting bar extends outside the groove hole; a buffer rubber layer is adhered to the end part, at one end of the outer side of the groove hole, of the impacting bar; and the contact switch is electrically connected with a drive motor of the arm stand. According to the wheel type crane buffer type anti-back-tipping device, with matching of the contact switch and the spring, overranging back tipping of the arm stand is prevented, and the safety of the crane is guaranteed; and meanwhile, non rigid collision due to back tipping prevention exists, damage on the crane is reduced, and the service life of the crane is prolonged.

The invention discloses a buffer device, which comprises a brake cylinder (1), a control valve (2) and a control device (5). A rod-less cavity of the brake cylinder (1) is communicated with a work port of the control valve (2), and the control device (5) controls action of the control valve (2) according to working states of the buffer device so that different pressure can be applied to the inside of the rod-less cavity. The invention further discloses a back-tilting preventing device of a boom comprising the buffer device. The buffer characteristics of the buffer device can be regulated in real time, and even on the working conditions of sudden unloading and the like, the dynamic characteristics of the buffer device can be regulated in real time, so that the mechanical behavior of the boom can be optimized, the boom can be stabilized within the regular elevation range, back tilting of the boom can be prevented and the buffering power peak can be optimum.

The invention discloses a self-adaptive seat, an all-terrain wheelchair and a self-adaptive climbing method. The self-adaptive seat comprises a supporting seat and a seat body, and the seat body comprises a seat face; the self-adaptive seat further comprises an adjustable supporting assembly, an angle adjusting mechanism and a rotating mechanism; the supporting seat is rotationally connected with the adjustable supporting assembly, and when the adjustable supporting assembly rotates around the supporting seat, the seat face of the seat body is kept parallel all the time; the angle adjusting mechanism is used for adjusting the angle of the seat body, so that the seat face of the seat body is always kept parallel; the rotating mechanism is used for driving the seat body to rotate; the adjustable supporting assembly is connected with the rotating mechanism, and the rotating mechanism is connected with the seat body through the angle adjusting mechanism; and the supporting seat is further connected with a walking mechanism. The wheelchair can walk in all terrains, the seat face of the wheelchair is always parallel to the ground in the stair climbing process, the gravity center of the wheelchair is pressed on the front section of the wheelchair in the stair climbing process, the overall stability is better, the situation that the wheelchair turns over and the like is effectively prevented, and the safety coefficient is high.

A double-layer auxiliary frame structure of a high-altitude operation car is mainly composed of a lower-layer car frame, an upper-layer car frame, car frame supporting columns and car frame locking devices. The lower-layer car frame is mounted above a chassis car frame. The upper-layer car frame is hinged to the upper portion of the lower-layer car frame. A high-altitude operation boom system is mounted above the upper-layer car frame. The four sides of the upper-layer car frame are provided with supporting legs. The car frame supporting columns and the car frame locking devices are arranged between the upper-layer car frame and the lower-layer car frame and located at the ends, close to a chassis cab and the chassis car tail, of the upper-layer car frame or the lower-layer car frame correspondingly. By means of the double-layer auxiliary frame structure, the action point of the chassis gravity on an auxiliary frame can be adjusted, and then stabilizing force is provided for high-altitude operation better. The operation stability is improved. Moreover, the problem that a cross beam of the tail of a cab needs to be extraordinarily reinforced to meet the use conditions due to overhanging of the cab in the prior art can be solved.

The invention provides an anti-sideslip intelligent bed chair. The anti-sideslip intelligent bed chair comprises a bed body, a wheelchair and a connecting device, wherein the bed body and the wheelchair are connected and embedded through the connecting device; the connecting device comprises a bed head locking mechanism, a bed tail locking mechanism, bed forming guide wheels and bed forming guiderails; the bed head locking mechanism is mounted at the head part of the bed body and is used for fixing the front part of the wheelchair, the bed tail locking mechanism is mounted at the tail part ofthe bed body and is used for fixing the rear part of the wheelchair, the bed forming guide rails are mounted at the same side of the bed head locking mechanism, the bed forming guide wheels are mounted on two sides of a side plate at the tail part of the wheelchair, and the bed forming guide wheels and the bed forming guide rails realize the bed forming guidance of the wheelchair. The innovationpoint is that the anti-sideslip intelligent bed chair further comprises a back anti-sideslip mechanism, and the back anti-sideslip mechanism is mounted on the wheelchair. For the anti-sideslip intelligent bed chair, when a back bed board is lifted, the two sides are automatically folded inwards for 15 degrees, so that the sideslip of a patient can be effectively prevented, and the personal safetyis guaranteed.

The invention discloses a transportation robot with positioning and load-bearing alarm functions, and belongs to the field of transportation equipment. The transportation robot comprises: a base, wherein a walking mechanism is arranged on the base; a lifting device, wherein the lifting device is arranged on the base; and a loading part, wherein the loading part comprises a cylinder body, and the lifting device can drive the cylinder body to reciprocate up and down. The cylinder body comprises an outer cylinder and an inner cylinder, a buffer cavity is formed between the outer cylinder and theinner cylinder, a plurality of elastic pieces are arranged in the buffer cavity, at least one pressure sensor is installed on each elastic piece, a micro air cylinder is arranged on the outer wall ofthe outer cylinder, and the telescopic end of the micro air cylinder penetrates through the wall of the outer cylinder and extends into the buffer cavity to be connected with a movable plate. When thepressure value of the pressure sensor is larger than a set value, the micro air cylinder drives the movable plate to move towards the inner cylinder so as to abut against the inner cylinder, and thepressure value of the pressure sensor returns to a normal range. A gravity sensor is arranged at the bottom of the inner cylinder. The transportation robot can achieve a good balance effect when materials are transported.

The invention discloses a walking stick which does not need to be held with a hand. The walking stick comprises a supporting rod, a supporting disc and an anti-back-tipping support leg, wherein one end of the supporting rod is connected with the anti-back-tipping support leg, the other end of the supporting rod is fixedly connected with the supporting disc in a rotary mode, and the supporting disc is provided with a bandage opening allowing a bandage to pass through to be fixed on the leg of a person; the supporting disc and the anti-back-tipping support leg are arranged at the two ends of the supporting rod respectively, and after the supporting disc is tied to the leg of the person through the bandage, the leg of the user can be supported by the supporting disc, and supporting force is provided for the leg of the person; the anti-back-tipping support leg can support the body of the person on the portion of the foot with a low gravity center so as to provide supporting force for the wounded leg and effectively prevent the person from tipping backwards. Both the upper portion and the lower portion of the walking stick are effectively fixed to the user, people do not need to practise holding the walking stick and clamping the walking stick under the arm to walk, the hands of people can be freed so that people can do things more conveniently, and underarm pains of the user caused by pressure are avoided.

The invention provides a general combination method for a super-lift mast, a crane and a boom, and belongs to the technical field of engineering machinery. The super-lift mast comprises a mast body, the first end of the mast body is provided with a first interface structure, and the first interface structure is suitable for being connected with the upper end of a rotary table or a main jib of the crane. A first pulley structure and a first installation part suitable for installing a second pulley structure are arranged at the second end of the mast body. According to the super-lift mast, the first interface structure is arranged at the first end of the mast body, the first installation part for installing the second pulley structure is arranged at the second end of the mast body, and therefore after a pulley is installed on the first installation part of the super-lift mast, the super-lift mast can also be used as a variable-amplitude fly jib and a light main jib, and the universality of the boom is high. The utilization rate of the boom is increased, and the cost is saved.

The invention discloses a dynamic compaction machine backward-tilting preventing control method and system. A backward-tilting preventing oil cylinder is installed at the tail of a dynamic compactionmachine, and when the dynamic compaction machine raises a hammer, the backward-tilting preventing oil cylinder is controlled to extend and be supported on the ground; when the backward-tilting preventing oil cylinder extends and is supported on the ground to achieve the preset recoil force, an oil inlet and outlet path of the backward-tilting preventing oil cylinder is controlled to be locked; when the dynamic compaction machine walks or rotates, the backward-tilting preventing oil cylinder is controlled to be drawn back. According to the dynamic compaction machine backward-tilting preventingcontrol method and system, backward tilting impact force of the dynamic compaction machine is reduced, front-back swing of the dynamic compaction machine is reduced, the working stability of the dynamic compaction machine is improved, a rotary support and a rotary platform apparatus of the dynamic compaction machine are prevented from being damaged, and the service life of the rotary support and the service life of the rotary platform apparatus of the dynamic compaction machine are prolonged.

The embodiment of the invention provides a counterweight device and a crane. The counterweight device comprises a counterweight assembly and a supporting assembly, wherein the counterweight assembly is connected with a rotary platform of the crane; one end of the supporting assembly is connected onto the counterweight assembly or the rotary platform; and the other end of the supporting assembly is supported on the ground. Through the structural arrangement, the supporting assembly can form supporting between the counterweight assembly and the ground or between the rotary platform and the ground. Therefore, the whole crane can be effectively prevented from tilting backwards, and the stability of the crane is greatly improved. Furthermore, the phenomenon that the rotary platform and a slewing bearing are damaged due to the fact that the whole machine tilts backwards is effectively prevented.