CN209023973U - A kind of guard assembly of lifting device - Google Patents

Abstract

A kind of guard assembly of the lifting device of the utility model, it is characterized by comprising two attachment bases, two pin shafts and a U-shaped guardrail, two attachment bases are fixedly installed on mounting rack, and extend in the horizontal direction to two sides respectively, two pin shafts are set on the attachment base along the vertical direction respectively, pin shaft described in wherein at least one can be separated from the attachment base, the U-shaped guardrail both ends are provided with turning set, two pin shafts may pass through two turning sets, the U-shaped guardrail is fixed on the attachment base, and the U-shaped guardrail can be rotatably dispose on the pin shaft by the turning set.It is simple with structure, securely and reliably, open and close convenient advantage.

Description

A kind of guard assembly of lifting device

Technical field

The utility model relates to tool equipment more particularly to a kind of lifting devices.

Background technique

Lifting device is a kind of device realizing people or object completion lower and eminence and moving back and forth, the weight of lifting device Wanting index is: 1, safety；2, removable property；3, have crisis releasing and escaping function.

Elevating mechanism common at present has civilian elevator, lift for building.Civilian elevator to auxiliary facility require compared with Height can not generally use in operation outdoors；It is realized and is promoted using cable, falling accident easily occurs for cable breaks, in addition, in operation Power failure is unfavorable for escaping.Lift for building is suitble to open air use, but needs to set up steel pipe support, and construction is relative complex, Cost is also higher；At the same time, building lift is realized using cable and is promoted, and falling accident, safety easily occur for cable breaks It is not high.In addition, when being in high-altitude, being unfavorable for suing and labouring, not having crisis releasing and escaping function as powered off.

Since outdoor study scene is not quite similar, such as field of electricity construction, job execution in pinnacled pylon is needed, Lifting climbing equipment will be used, due to the limitation of construction site, there are biggish inconvenience using existing building lift；Such as Scene of fire, normal channel are blocked, and assist rescue work without effective lifting device.

The a plurality of lifting devices of the utility model this artificial design.China such as Patent No. 2017110065896 is practical New patent is the wherein a lifting device of the utility model people design.But in actual use, the utility model People has found that the lifting device of the structure there are security risk, is mainly reflected in people and stands and only pacify by holding handle on carrier Full protection is not able to satisfy security protection demand；In addition there is in installation, carrying, maintenance process inconvenience in the update device.

Therefore, existing lifting device is improved, it is made to overcome the above problem, be that those skilled in the art urgently solve A problem certainly.

Utility model content

The purpose of this utility model is to provide one kind it is safe and reliable, installation carries, is easy to maintain, runs smoothly, makes With the improved lifting device with full mechanical speed change centrifugation latch assembly that the service life is long.

To be designed to provide a kind of structure simple for another of the utility model, securely and reliably, opens and closes convenient Guard assembly.

The further object of the utility model is to provide a kind of installation, disassembly, adjusts very easily locking wheel group Part.

The utility model further an object is that providing a kind of simple in construction, easy to disassemble and assemble, the liter with double insurance It comes down to a lower group part.

To achieve the above objectives, the technical solution adopted in the utility model are as follows: it is a kind of it is improved have full mechanical speed change from The lifting device of heart latch assembly, including guide rail, mounting rack, carrier, Power Component, lifting assembly and full mechanical speed change centrifugation lock Only component, the mounting rack are movably set on the guide rail, the carrier, the Power Component, the lifting assembly and institute It states full mechanical speed change centrifugation latch assembly to be all set on the mounting rack, the Power Component drives the lifting assembly fortune Turn, the lifting assembly acts on the guide rail, drives the mounting rack along the guide rail activity, the full mechanical speed change centrifugation Latch assembly is fixed locked when the lifting device decrease speed is too fast；It is characterized by:

The lifting device further includes guard assembly, and the guard assembly includes two attachment bases, two pin shafts and a U Type guardrail, two attachment bases are fixedly installed on the mounting rack, and are extended in the horizontal direction to two sides respectively, two institutes It states pin shaft to be set to along the vertical direction on the attachment base respectively, pin shaft described in wherein at least one can divide from the attachment base From the U-shaped guardrail both ends are provided with turning set, and two pin shafts may pass through two turning sets, by the U-shaped guardrail It is fixed on the attachment base, and the U-shaped guardrail can be rotatably dispose on the pin shaft by the turning set；

Multiple groups locking wheel assembly is additionally provided on the mounting rack, the locking wheel assembly acts on the guide rail, is used for The mounting rack is locked on the guide rail in the horizontal direction；Rotating hole, the locking wheel group are offered on the mounting rack Part includes adjustment plate, eccentric disk, idler wheel and fixing bolt, and the first fixation hole and the second fixation hole are offered in the adjustment plate, Offer eccentric orfice and third fixation hole on the eccentric disk, the fixing bolt passes through first fixation hole, can will be described Adjustment plate is fixed on the mounting rack, and the fixing bolt passes through second fixation hole and the third fixation hole, can be incited somebody to action The eccentric disk is fixed in the adjustment plate, and the eccentric disk is rotatably set in the rotating hole, and the idler wheel is set It is placed in the eccentric orfice；When first fixation hole does not install the fixing bolt, the adjustment plate, the eccentric disk and rolling Wheel can be rotated along the rotating hole, so that the idler wheel is close to or far from the guide rail；

Gear grooved is provided on the guide rail, the gear structure that the lifting assembly is and the gear grooved cooperates is described Lifting assembly includes master gear and pinion, and the master gear and the pinion are fixedly installed with one heart, the master gear and institute The contact surface for stating guide rail is above the pinion；The master gear is two, and is set to the pinion two sides, the master Gear is made of plastic material, and the pinion is made of metal material；It is set between the master gear and the pinion It is equipped with connection shaft, the connection shaft sequentially passes through the master gear and the pinion and is rotationally connected with the mounting rack On.

As an improvement, being provided with gear set between the Power Component and the lifting assembly, the Power Component passes through The gear set drives the lifting assembly rotation, and the gear set includes first gear, second gear and third gear, described First gear is fixedly installed in the rotation axis of the Power Component, and the second gear is rotatably dispose on the mounting rack, The third gear is fixedly installed in the connection shaft of the lifting assembly, the first gear and the second gear Engagement, the second gear and third gear engagement；Taper tensioner, institute are provided in the rotation axis of the Power Component It states first gear to be fixed in the taper tensioner by tension bolt, also be set in the connection shaft of the lifting assembly It is equipped with the taper tensioner, the third gear is fixed in the taper tensioner by tension bolt.Gear set transmission Dynamic efficiency is high, and stable structure is highly reliable；The setting of taper tensioner is avoided that the installation deviation between gear, improves tooth The reliability of wheel group.

As an improvement, latch assembly is arranged on the outside of the full mechanical speed change centrifugation latch assembly, the latch assembly is used for Limit the full mechanical speed change centrifugation latch assembly movement.The effect of latch assembly is to stop at high-rise working in lifting device When, can use latch assembly by full mechanical speed change centrifugation latch assembly locking, guarantee that it will not be acted, full mechanical speed change from Even if also can guarantee being perfectly safe for construction personnel, relative to a double insurance in the case that heart latch assembly is damaged.

Specifically, the latch assembly includes locking screw rod, knob and gasket, the locking screw rod is fixedly installed on described Full mechanical speed change centrifugation latch assembly simultaneously extends on the outside of the mounting rack, and the knob thread is connected to the locking screw rod On, the gasket is set between the knob and the mounting rack；The knob screws inwardly, so that the gasket contradicts The mounting rack carries out locking.Above-mentioned locking structure is simple, reliable, at low cost.

As an improvement, two pieces of support plates are rearward extended in the mounting rack lower end, the carrier is fixedly installed on two pieces In the support plate, the Power Component is set between two pieces of support plates.On the one hand it can facilitate installation carrier, another party Power Component is in middle position, is mounted in side compared to Power Component, this structure has more stable center of gravity, improves lifting device Stability.

It is further improved, the support plate two sides are respectively set there are two traveling wheel, and four traveling wheels make described Lifting device can walk on the ground.Greatly facilitate the carrying of lifting device, it is necessary to if can also increase to traveling wheel Add power, lifting device more convenient can travel on the ground.

Prevent being disengaged from the groove as an improvement, being provided in the axial direction on the separable pin shaft, attachment base upper end edge level side To fixed pin is provided with, the fixed pin can be prevented being disengaged from the groove into described；The pin shaft can be slided along the fixed pin, and described solid Rationed marketing limits the pin shaft and is detached from the attachment base.Above structure pin shaft is not fallen out, increase lifting device safety and Reliability.

It is set on the attachment base preferably, two pin shafts are separable, is all provided on two pin shafts It is equipped with and prevents being disengaged from the groove, be provided with the fixed pin on two attachment bases；Height of the U-shaped guardrail apart from the carrier connects Person of modern times's body waist height, is typically chosen between 80cm~100cm again.Above structure allow operator from any side into Enter carrier, improves the applicability of lifting device；What the design of U-shaped guardrail height can be replaced protect.

Preferably, offering spindle hole on the master gear, countershaft hole is offered on the pinion, the connection turns Axis includes linkage section and rotational segment, and the linkage section sequentially passes through spindle hole and the countershaft hole, by the master gear and described Pinion progress is circumferentially fixed and separated in the linkage section, and the rotational segment is rotatably dispose on the mounting rack, described Master gear, the pinion and the connection shaft carry out axial restraint by the mounting rack.Above-mentioned connection and fixed form It is simple and reliable, and installation and replacement are also very convenient.

Retain original design, the full mechanical speed change centrifugation latch assembly include rotating member, transmission gear shift part, turntable, from Heart part and brake part, the rotating member are rotationally connected on the mounting rack, the mounting rack when movable on the guide rail, The rotating member acts on the guide rail and rotates, and the turntable is rotationally connected on the mounting rack, and the rotating member is logical It crosses the transmission gear shift part and drives the turntable rotation, the centrifugation part is slideably positioned on the turntable, the rotary speed When more than setting value, the centrifugation part outside Slideslip can make described to contact the brake part under the action of the centrifugal force Brake part movement, the brake part act on the guide rail, realize that the mounting rack is stopped action；Full mechanical speed change centrifugation The setting of latch assembly can be with the decrease speed of the entire lifting device of Real-time Feedback, when lifting assembly damage, guide rail deformation, power Component is out of control to wait fortuitous events, and when whole device high speed being caused to decline, full mechanical speed change centrifugation latch assembly is just done at once It reacts out, whole device is fixed locked, and avoiding device causes injury to personnel and article to damage because high speed falls.And full machine It is full mechanical that tool speed change, which is centrifuged latch assembly, compares electronic equipment, better reliability, and adapt to various severe rings Border, such as high and cold, high pressure, low pressure, high temperature, high humidity etc. meet the various use demands of power equipment.

The brake part includes latch hook, card column, brake sliding block and pulls spring, and described latch hook one end is rotationally connected with institute It states on brake sliding block, the card column is fixedly installed on the mounting rack, and the latch hook middle section can be snapped in the card column, institute Stating the latch hook other end can contact the centrifugation part, and the brake sliding block is slideably positioned on the mounting rack, the pulling spring It is set between the brake sliding block and the mounting rack；When the lifting device operates normally, the rotary speed is lower, this Shi Suoshu centrifugation part follows the turntable to rotate and does not contact the latch hook, and the latch hook lock is in the card column, the brake For vehicle sliding block not with the guide rail contact, the pulling spring is in tensional state；It is described when the lifting device high speed declines Rotary speed is higher, while the centrifugation part follows the turntable to rotate at this time, and outside Slideslip under the action of the centrifugal force, Until contacting the latch hook, pushes the latch hook to rotate, the latch hook is made to be detached from the card column, the pulling spring is quickly received Contracting pulls the brake sliding block quick sliding, until contacting the guide rail, interacts in the brake sliding block and the guide rail Under, the mounting rack is stopped action；Brake sliding block is equivalent to the brake block of automobile, mounting rack firmly can be fixed on guide rail On.

The latch hook and the card column are electric conductor, are electrically connected with conducting wire in the latch hook and the card column, from And construction of switch is constituted, and the construction of switch and Power Component series connection, and when the latch hook is detached from from the card column, institute State Power Component open circuit；This structure can guarantee that, when mounting rack is stopped action, Power Component can stop working in time, Yi Mianzao At the damage of Power Component, lifting assembly and guide rail.

Oblique chute is provided on the mounting rack, the brake sliding block is slideably positioned in oblique chute, the brake sliding block Can be parallel with the guide rail always with the contact surface of the guide rail contact, the brake sliding block is moved to from described oblique chute one end When the other end, the brake sliding block moves closer to or far from the guide rail；Benefit using this structure is, whole device to In the case where lower slider, sliding block is braked when with guide rail contact, there can be the trend moved upwards under the action of frictional force, i.e., The trend continued close to guide rail is had, keeps the braking effect of brake sliding block more preferable；In addition, the effect of latch is can be stronger " catching " guide rail.

Reset spring is additionally provided between the turntable and the centrifugation part；The latch hook other end is threaded with contact Block, the contact block and centrifugation part contact, are rotated on the latch hook by the contact block, the contact block and institute are adjusted State the distance between centrifugation part；The setting of reset spring can make to be centrifuged the trend that part has inside Slideslip, play reset response； In addition it is noted that the centrifugal force for acting on centrifugation part needs to overcome the gravity of centrifugation part, is centrifuged between part and turntable The elastic force of frictional force and reset spring can just make to be centrifuged the outside Slideslip of part.And the setting of contact block, for adjusting contact block The distance between centrifugation part, i.e., the revolving speed of turntable when adjusting centrifugation part can act on brake part, i.e. decline safe speed Setting.

Compared with the prior art, the advantages of the utility model are:

1, the setting of guard assembly is played the role of protecting operator, and the very convenient behaviour of guard assembly of the structure Make personnel's disengaging, while it has simple, easy to operate, the at low cost advantage of structure；It is necessary in the case where, it can also will pacify Full band is tied up between operator and guard assembly.

2, the eccentric design of wheel assembly is locked, idler wheel can be torn open simultaneously by rotation " card " into guide rail when mainly facilitating installation When unloading, idler wheel also can be detached from guide rail by rotation, make it have advantage convenient for disassembly and assembly.In addition, by changing the first fixation hole Fixation position, the distance between adjustable idler wheel and guide rail seek a more suitable installation site, make it have tune Save convenient advantage.

3, under normal circumstances, master gear contact guide rail is advanced, and when master gear damages suddenly, pinion starts to contact Guide rail is advanced, pinion play the role of one it is spare, be a kind of design of double insurance, further increase the peace of whole device Quan Xing.The main reason for master gear is made of plastics is that plastic gear motion noise on guide rail is small, and metal gear is being led Motion noise is very big on rail, but plastic strength is not so good as metal again, may free fragmentation, therefore comprehensively consider, this programme is adopted The noise of device can be reduced, is a kind of preferred side while guaranteed safety with the master gear of plastics and the pinion of metal Case.Further preferably, master gear can be used nylon and be made, and pinion can be used stainless steel and be made.Main compared to original two-pack one Structure, contact span of the double main secondary structures of this programme with guide rail is bigger, and operation is more stable, and noise is smaller；And this knot The lifting assembly of structure does not need the fasteners such as bolt and is attached, and the disconnection by connecting shaft designs, direct using mounting rack By master gear and pinion fix in position, there is advantage simple in construction, easy to disassemble and assemble, at low cost.

Detailed description of the invention

Fig. 1 is the schematic perspective view of a preferred embodiment according to the present utility model, and shows latch assembly Partial enlarged view；

Fig. 2 is the schematic diagram of internal structure of a preferred embodiment according to the present utility model；

Fig. 3 is the schematic perspective view of guard assembly in a preferred embodiment according to the present utility model；

Fig. 4 is the connection schematic diagram of pin shaft and attachment base in a preferred embodiment according to the present utility model；

Fig. 5 is the schematic perspective view that wheel assembly is locked in a preferred embodiment according to the present utility model；

Fig. 6 is the explosive view that wheel assembly is locked in a preferred embodiment according to the present utility model；

Fig. 7 is the axial decomposition view that wheel assembly is locked in a preferred embodiment according to the present utility model；

Fig. 8 is the schematic perspective view of lifting assembly in a preferred embodiment according to the present utility model；

Fig. 9 is the explosive view of lifting assembly in a preferred embodiment according to the present utility model；

Figure 10 is support plate, Power Component, lifting assembly, gear set in a preferred embodiment according to the present utility model With the structural schematic diagram of traveling wheel；

Figure 11 is the explosive view of preferred embodiment middle gear group according to the present utility model；

Figure 12 is that the structure of full mechanical speed change centrifugation latch assembly in a preferred embodiment according to the present utility model is shown It is intended to.

Specific embodiment

It is described below for disclosing the utility model so that those skilled in the art can be realized the utility model.It retouches below Preferred embodiment in stating is only used as illustrating, it may occur to persons skilled in the art that other obvious modifications.

As shown in Fig. 1~12, a preferred embodiment of the utility model includes guide rail 1, mounting rack 2, carrier 3, power Component 4, lifting assembly 5, full mechanical speed change centrifugation latch assembly 6, guard assembly 7, locking wheel assembly 8, gear set 9 and locking group Part 10, mounting rack 2 are movably set on guide rail 1, and carrier 3, Power Component 4, lifting assembly 5, full mechanical speed change are centrifuged locking group Part 6, guard assembly 7, locking wheel assembly 8, gear set 9 and latch assembly 10 are all set on mounting rack 2, and Power Component 4 drives Lifting assembly 5 operates, and lifting assembly 5 acts on guide rail 1, drives mounting rack 2 along guide rail activity, and full mechanical speed change is centrifuged locking group Part 6 is fixed locked when lifting device decrease speed is too fast.The following specifically describes the structures of various components:

The specific structure of lifting assembly 5: gear grooved 11 is provided on guide rail 1, lifting assembly 5 is and gear grooved 11 cooperates Gear structure, lifting assembly 5 include master gear 51 and pinion 52, and master gear 51 and pinion 52 are fixedly installed with one heart, main tooth The contact surface of wheel 51 and guide rail 1 is above pinion 52；Master gear 51 is two, and is set to 52 two sides of pinion, master gear 51 are made of plastic material, and pinion 52 is made of metal material；Connection is provided between master gear 51 and pinion 52 Shaft 53, connection shaft 53 sequentially pass through master gear 51 and pinion 52 and are rotationally connected on mounting rack 2.Further, main Spindle hole 511 is offered on gear 51, countershaft hole 521 is offered on pinion 52, and connection shaft 53 includes linkage section 531 and turns Dynamic section 532, linkage section 531 sequentially pass through spindle hole 511 and countershaft hole 521, master gear 51 and pinion 52 are carried out circumferential solid Fixed and separated in linkage section 531, rotational segment 532 is rotatably dispose on mounting rack 2, and master gear 51, pinion 52 and connection turn Axis 53 carries out axial restraint by mounting rack 2.

The specific structure of full mechanical speed change centrifugation latch assembly 6: full mechanical speed change centrifugation latch assembly 6 includes rotating member 61, transmission gear shift part 62, turntable 63, centrifugation part 64 and brake part, rotating member 61 are rotationally connected on mounting rack 2, mounting rack 2 When movable on guide rail 1, rotating member 61 acts on guide rail 1 and rotates, and turntable 63 is rotationally connected on mounting rack 2, rotating member 61 drive turntable 63 to rotate by transmission gear shift part 62, and centrifugation part 64 is slideably positioned on turntable 63, and 63 revolving speed of turntable is more than to set When setting value, centrifugation part 64 to contact brake part can be such that brake part acts by outside Slideslip under the action of the centrifugal force, stop Vehicle component acts on guide rail 1, realizes that mounting rack 2 is stopped action.Brake part in the present embodiment include latch hook 66, card column 67, Brake sliding block 68 and pulling spring 69, and 66 one end of latch hook is rotationally connected on brake sliding block 68, and card column 67 is fixedly installed on installation On frame 2,66 middle section of latch hook can be snapped in card column 67, and the accessible centrifugation part 63 of 66 other end of latch hook, the brake sliding of sliding block 68 is set It is placed on mounting rack 2, spring 69 is pulled to be set between brake sliding block 68 and mounting rack 2；When lifting device operates normally, turntable 63 revolving speeds are lower, are centrifuged part 64 at this time and follow turntable 63 to rotate and do not contact latch hook 66, the lock of latch hook 66 brakes in card column 67 Sliding block 68 with guide rail contact, does not pull spring 69 to be in tensional state.Its working principle is that: when lifting device high speed declines, 63 revolving speed of turntable is higher, while centrifugation part 64 follows turntable 63 to rotate at this time, and outside Slideslip under the action of the centrifugal force, directly To contact latch hook 66, latch hook 66 is pushed to rotate, latch hook 66 is made to be detached from card column 67, pull 69 rapid desufflation of spring, brake is pulled to slide 68 quick sliding of block, until contacting guide rail 1, in the case where brake sliding block 68 and guide rail 1 interact, mounting rack 2 is stopped action.Separately Outside, in order to increase safety, latch hook 66 and card column 67 are electric conductor, are electrically connected with conducting wire in latch hook 66 and card column 67 60, so that construction of switch is constituted, and construction of switch and Power Component 4 are connected, when latch hook 66 is detached from from card column 67, Power Component 4 open circuits.Moreover, being provided with oblique chute 24 on mounting rack 2, brake sliding block 68 is slideably positioned in oblique chute 21, and brake sliding block 68 The contact surface that can be contacted with guide rail 1 is parallel with guide rail 1 always, when brake sliding block 68 is moved to the other end from 21 one end of oblique chute, Brake sliding block 68 moves closer to or far from guide rail 1.Reset spring 65 is additionally provided between turntable 63 and centrifugation part 64；Latch hook 66 is another Threaded one end is connected with contact block 661, and contact block 661 and centrifugation part 64 are contacted, rotated on latch hook 66 by contact block 661, The distance between adjustable contact block 661 and centrifugation part 64.It is single that first is additionally provided between rotating member 61 and transmission gear shift part 62 To gear 621；When lifting device declines, rotating member 61 drives 62 activity of transmission gear shift part, lifting by the first ratchet 621 When device rises, transmission gear shift part 62 is inactive.

The specific structure of guard assembly 7: guard assembly 7 includes two attachment bases, 71, two pin shafts 72 and a U-shaped guardrail 73, two attachment bases 71 are fixedly installed on mounting rack 2, and are extended in the horizontal direction to two sides respectively, and two pin shafts 72 are distinguished It is set on attachment base 71 along the vertical direction, wherein at least one pin shaft 72 can be separated from attachment base, and 73 both ends of U-shaped guardrail are set It is equipped with turning set 731, two pin shafts 72 may pass through two turning sets 731, U-shaped guardrail 73 are fixed on attachment base 71, and U-shaped Guardrail 73 can be rotatably dispose on pin shaft 72 by turning set 731.Wherein anticreep is provided in the axial direction on separable pin shaft 72 Slot 721,71 upper end of attachment base is horizontally disposed fixed pin 711, and fixed pin 711, which can enter, to be prevented being disengaged from the groove 721；Pin shaft 72 can It is slided along fixed pin 711, and fixed pin 711 limits pin shaft 72 and is disconnected seat 71.In the present embodiment, two pin shafts 72 can divide From be set on attachment base 71, be provided on two pin shafts 72 it is anti-be disengaged from the groove 721, be provided with fixation on two attachment bases 71 Pin 711；Height of the U-shaped guardrail 73 apart from carrier 3 is close to human body waist height.

It locks the specific structure of wheel assembly 8: being additionally provided with multiple groups locking wheel assembly 8 on mounting rack 2, locking wheel assembly makees 8 For guide rail 1, for mounting rack 2 to be locked in guide rail 1 in the horizontal direction；Rotating hole 21, locking wheel are offered on mounting rack 2 Component 8 includes adjustment plate 81, eccentric disk 82, idler wheel 83 and fixing bolt 84, offers 811 He of the first fixation hole in adjustment plate 81 Second fixation hole 812 offers eccentric orfice 821 and third fixation hole 822 on eccentric disk 82, and it is fixed that fixing bolt 84 passes through first Adjustment plate 81 can be fixed on mounting rack 2 by hole 811, and fixing bolt 84 passes through the second fixation hole 812 and third fixation hole 822, Eccentric disk 82 can be fixed in adjustment plate 81, eccentric disk 82 is rotatably set in rotating hole 21, and idler wheel 83 is set to partially In heart hole 821；When first fixation hole 811 does not install fixing bolt 84, adjustment plate 81, eccentric disk 82 and idler wheel 83 can be along rotating holes 21 are rotated, so that idler wheel 83 is close to or far from guide rail 1.

The specific structure of gear set 9: being provided with gear set 5 between Power Component 4 and lifting assembly 5, Power Component 4 is logical Cross gear set 9 drive lifting assembly 5 rotate, gear set 9 include first gear 91, second gear 92 and third gear 93, first Gear 91 is fixedly installed in the rotation axis of Power Component 4, and second gear 92 is rotatably dispose on mounting rack 2, third gear 93 It is fixedly installed in the connection shaft 53 of lifting assembly 5, first gear 91 and second gear 92 engage, second gear 92 and third Gear 93 engages；Taper tensioner 94 is provided in the rotation axis of Power Component 4, first gear 91 is fixed by tension bolt 95 In in taper tensioner 94, being also equipped with taper tensioner 94 in the connection shaft 53 of lifting assembly 5, third gear 93 is by rising Tight bolt 95 is fixed in taper tensioner 94.

The specific structure of latch assembly 10: latch assembly 10, locking group are set on the outside of full mechanical speed change centrifugation latch assembly 6 Part 10 is acted for limiting full mechanical speed change centrifugation latch assembly 6.Latch assembly 10 includes locking screw rod 101, knob 102 and pad Piece 103 (width that the diameter of gasket 103 is greater than oblique chute 24), locking screw rod 101 are fixedly installed on full mechanical speed change centrifugation lock Only component (specifically setting is on brake sliding block 68) and the outside of mounting rack 2 is extended to, knob 102 is threadedly connected to locking screw rod On 101, gasket 103 is set between knob 102 and mounting rack 2；Knob 102 screws inwardly, so that gasket 103 contradicts installation Frame 2 carries out locking.

In addition, two pieces of support plates 22 are rearward extended in 2 lower end of mounting rack as optimization design, carrier 3 is fixedly installed on In two pieces of support plates 22, Power Component 4 is set between two pieces of support plates 22.It walks there are two being respectively set 22 two sides of support plate Wheel 23, four traveling wheels 23 enable lifting device to walk on the ground.

Basic principles, main features, and advantages of the present invention has been shown and described above.Current row The technical staff of industry is described in above embodiments and description it should be appreciated that the present utility model is not limited to the above embodiments Only the principles of the present invention, the utility model also has respectively on the premise of not departing from the spirit and scope of the utility model Kind changes and improvements, these changes and improvements are both fallen in the range of claimed invention.The requires of the utility model Protection scope defined by appended claims and its equivalent.

Claims (3)

1. a kind of guard assembly of lifting device, it is characterised in that: including two attachment bases, two pin shafts and a U-shaped guardrail, Two attachment bases are fixedly installed on mounting rack, and are extended in the horizontal direction to two sides respectively, two pin shaft difference It is set on the attachment base along the vertical direction, pin shaft described in wherein at least one can be separated from the attachment base, described U-shaped Guardrail both ends are provided with turning set, and two pin shafts may pass through two turning sets, the U-shaped guardrail are fixed on described On attachment base, and the U-shaped guardrail can be rotatably dispose on the pin shaft by the turning set.

2. a kind of guard assembly of lifting device according to claim 1, it is characterised in that: on the separable pin shaft It is provided in the axial direction with and prevents being disengaged from the groove, the attachment base upper end is horizontally disposed fixed pin, and the fixed pin can enter described It is anti-to be disengaged from the groove；The pin shaft can be slided along the fixed pin, and the fixed pin limits the pin shaft and is detached from the attachment base.

3. a kind of guard assembly of lifting device according to claim 2, it is characterised in that: two pin shafts can divide From be set on the attachment base, be provided on two pin shafts it is anti-be disengaged from the groove, be provided on two attachment bases The fixed pin；Height of the U-shaped guardrail apart from carrier is close to human body waist height.