CN206231625U

CN206231625U - For the ground towing machine wheel of slide-type helicopter

Info

Publication number: CN206231625U
Application number: CN201621331545.1U
Authority: CN
Inventors: 彭彤; 张庆
Original assignee: SGCC GENERAL AVIATION Co Ltd; State Grid Corp of China SGCC
Current assignee: State Grid Power Space Technology Co ltd; State Grid Corp of China SGCC
Priority date: 2016-12-06
Filing date: 2016-12-06
Publication date: 2017-06-09
Anticipated expiration: 2026-12-06

Abstract

The utility model provides a kind of ground towing machine wheel for slide-type helicopter, including hydraulic mechanism (10), transmission mechanism (20) and hitch (30), transmission mechanism (20) contains gear hub (21), gear shaft (22) and ratch (23), gear shaft (22) is engaged with ratch (23), gear hub (21) is arranged at gear shaft (22) and ratch (23) outward, hydraulic mechanism (10) can rotate gear shaft (22) by driving ratch (23), the lower end of gear hub (21) is detachably connected with hitch (30).The wheel hitch for being used for the ground towing machine wheel of slide-type helicopter contains various hanger brackets, and by changing different hanger brackets, the ground towing machine wheel for being used for slide-type helicopter can apply to different slide-type helicopters.

Description

For the ground towing machine wheel of slide-type helicopter

Technical field

The utility model is related to helicopter ground handling equipment field, particularly a kind of ground for slide-type helicopter Orly wheel.

Background technology

With the continuous extension of China's slide-type helicopter market, quickly, helicopter each side ensures continuous for quantity increase Strengthen, it is even more indispensable that slide-type helicopter has to use for towing machine wheel.Light-duty on current domestic and international market is gone straight up to winged The undercarriage of machine mostly uses skid landing gear, the domestic existing blaubok of light helicopter, Bel, squirrel, straight -11, The lifting device of the towing machine wheel of the types such as EC120 is divided into four kinds：

One is that based on lever-type structure, on the one hand this structure operationally needs to use the steel lever of 1.6m, work Make radius larger, be not easy to operation.On the other hand, combat duty requirement aspect, helicopter is installed additional after weapon carrier, which Lifting gear work cannot be smoothed out.

Two is that the external dual-chamber structure hydraulic pressure wheel group for using then must often supplement fluid, and sealing to two-chamber and The seal request of pipeline is higher, and accessory cannot be changed and repaired, and substantially be used as disposable unit, and maintenance cost is very It is high.

Three is that the use of Bel's aircraft towing machine wheel directly puies forward formula operation principle, is directly carried using two pieces of steel plate guide rail methods, its guide rail Place gap is big, and two-wheeled keeps balance inconsistent, and service life is short, causes cost to greatly improve.

Four is worm and gear mechanical lifting principle, and this product work quality is more stable, but because lifting speed is slow, Time efficiency is low, in real work, does not use the lifting device typically.

Four kinds of towing machine wheels of mode of the above can only one-to-one type, do not reach it is general, exchange, at present all rely on import, High cost, maintenance and accessory inconvenience.

Utility model content

In order to solve the problems, such as existing slide-type helicopter ground towing machine wheel cannot general exchange, the utility model carries A kind of ground towing machine wheel for slide-type helicopter is supplied, this is used for the wheel suspension machine of the ground towing machine wheel of slide-type helicopter Structure contains various hanger brackets, and by changing different hanger brackets, the ground towing machine wheel for being used for slide-type helicopter can be with It is applied to different slide-type helicopters.

The utility model solves the technical scheme that its technical problem used：A kind of ground for slide-type helicopter Towing machine wheel, including hydraulic mechanism, transmission mechanism and hitch, transmission mechanism contain gear hub, gear shaft and ratch, gear shaft Engaged with ratch, gear hub is arranged at outside gear shaft and ratch, hydraulic mechanism can rotate gear shaft by driving ratch, tooth The lower end of hub is detachably connected with hitch.

Hitch includes the first hanger bracket, and the first hanger bracket contains the swing seat of tubular, the lower end of gear hub Can be plugged in swing seat, swing seat can be connected by bolt with the lower end of gear hub, hydraulic mechanism is located at gear The left side of shell, is fixed with compact heap on the left of swing seat, the lower surface of compact heap is convex circular arc, the following table of compact heap Face matches with the upper surface of the skid of helicopter.

The cavity of the protuberance insertion for skid upper surface, the front side of swing seat and rear side are provided with the lower end of swing seat Patchhole is equipped with, the round pin of the protuberance for being inserted into skid is provided with the patchhole, the right side of swing seat is fixed There is auxiliary support mechanism, auxiliary support mechanism contains guide cylinder, and adjusting bolt, guide cylinder and tune are arranged with guide cylinder Guide runner is provided between whole screw rod, the axis of adjusting bolt is vertically set, the bottom of guide runner is connected with compression Plate, when adjusting bolt rotates, guide runner and pressure strip can be moved vertically.

Handwheel is arranged with outside the upper end of adjusting bolt, handwheel is connected by latch with adjusting bolt, and pressure strip passes through Straight pin is connected with guide runner, and guide runner contains internal thread, and the lower surface of pressure strip is convex circular arc, pressure The lower surface of tight plate matches with the upper surface of the skid of helicopter.

Hitch includes second hanger bracket, and second hanger bracket contains suspension plate and connecting plate, under connecting plate End is fixedly connected with suspension plate, and connecting plate can be connected by rotary shaft with the lower end of gear hub, outside one end of rotary shaft It is additionally provided with the rotation handle for rotary motion axle.

Hitch includes the third hanger bracket, and the third hanger bracket contains the suspension long of bar shaped, and suspension long contains one The base plate of block bar shaped, two pieces of risers and two blocks of side plates, two blocks of side plates are set along the length direction of base plate, and two blocks of side plates are fixed respectively In the both sides of the edge of base plate, two pieces of risers are located between two blocks of side plates, and two pieces of risers are parallel to each other and positioned at the top of base plate, tooth The lower end of hub can be plugged between two pieces of risers, and the lower end of gear hub can be connected by bolt with two pieces of risers.

Along the length direction of suspension long, one end of suspension long is provided with plagiocephaly pin, the other end of suspension long be provided with plugging block and Cylindric pulls pin, and pulls pin through plugging block, pulls pin and is set in the horizontal direction with plugging block interference fits, the center line pulled pin Put, pull pin in be arranged with the heart that rises, rise the heart and interference fits of pulling pin, be provided between the heart of pulling pin and rise for rise the heart provide restoring force Spring, the one end pulled pin is provided with nut of pulling pin, and it is outer that nut of pulling pin is located at suspension long, and steel ball is provided with the other end pulled pin.

The ground towing machine wheel for slide-type helicopter also includes wheel set, and wheel set passes through crank axle and tooth One end of wheel shaft is connected, after gear shaft is rotated, the synchronous motion upwards of hydraulic mechanism, transmission mechanism and hitch.

Wheel set includes hub unit and tire, tire sleeve outside the hub unit, the hub unit contain axle sleeve, Left half wheel pot and right half wheel pot, axle sleeve fixed sleeves are provided with annular gusset, and the axis of axle sleeve overlaps with the axis of annular gusset, left The bottom of the bottom of half wheel pot and right half wheel pot is sealedly connected and fixed with annular gusset, and annular gusset is located at left half wheel pot and the right side Between half wheel pot, left half wheel pot and right half wheel pot are in the both sides of annular gusset mirror image each other.

Hydraulic mechanism contains plunger displacement pump and oil cylinder, and oil cylinder is contained within oil cylinder push rod, and oil cylinder push rod is abutted with ratch, ratch Axis is horizontally disposed, and oil drum is arranged with outside oil cylinder, and plunger displacement pump can make oil cylinder push rod to hydraulic oil is pressed into oil cylinder Mobile, oil cylinder push rod can drive ratch to move and rotate gear shaft, and the top of gear hub is provided with portable, connects outside gear hub Protective cover is connected to, oil cylinder push rod, ratch and protective cover set gradually along the axis direction of ratch, protective cover is that one end closing is another Open tubular structure, open end and the gear hub of protective cover is held to be tightly connected, protective cover is connected with safety pin, when the one of ratch When end enters the setting position of protective cover, safety pin is inserted into ratch fixes the position of ratch.

The beneficial effects of the utility model are：

1st, the wheel hitch for being used for the ground towing machine wheel of slide-type helicopter contains various hanger brackets, by changing not Same hanger bracket, the ground towing machine wheel for being used for slide-type helicopter can apply to different slide-type helicopters.

2nd, the ground towing machine wheel for being used for slide-type helicopter lifts speed soon, and bearing capacity reaches type requirement, promotes row Sail laborsaving, suspension replacing convenience.

3rd, it is easy to maintenance, reduces maintenance cost, it is to avoid wheel is shelved because aftermarket attachment cannot purchase generation.

Brief description of the drawings

The Figure of description for constituting the part of the application is used for providing being further understood to of the present utility model, this practicality New schematic description and description is used to explain the utility model, does not constitute to improper restriction of the present utility model.

Fig. 1 is the sectional view of the ground towing machine wheel for slide-type helicopter described in the utility model.

Fig. 2 is the sectional view along C-C directions in Fig. 1.

Fig. 3 is the structural representation of the first hanger bracket described in the utility model.

Fig. 4 is the schematic diagram in A directions in Fig. 1.

Fig. 5 is the schematic diagram in B directions in Fig. 1.

Fig. 6 is the structural representation of second hanger bracket described in the utility model.

Fig. 7 is the front view of the third hanger bracket described in the utility model.

Fig. 8 is the top view of the third hanger bracket described in the utility model.

Fig. 9 is the enlarged diagram of right-hand member in Fig. 8.

Figure 10 is the sectional view along D-D directions in Fig. 7.

Figure 11 is the structural representation of wheel set described in the utility model.

10th, hydraulic mechanism；20th, transmission mechanism；30th, hitch；40th, skid；50th, wheel set；60th, protective cover；

11st, plunger displacement pump；12nd, oil cylinder；13rd, oil cylinder push rod；14th, oil drum；15th, pressure handle；

21st, gear hub；22nd, gear shaft；23rd, ratch；24th, crank axle；25th, portable；

31st, the first hanger bracket；311st, swing seat；312nd, compact heap；313rd, auxiliary support mechanism；314th, guide cylinder； 315th, adjusting bolt；316th, guide runner；317th, pressure strip；318th, handwheel；319th, straight pin；3110th, cavity；3111st, circle is inserted Pin；

32nd, second hanger bracket；321st, suspension plate；322nd, connecting plate；323rd, rotary shaft；324th, handle is rotated；325th, prevent Come off block；

33rd, the third hanger bracket；331st, suspension long；332nd, base plate；333rd, riser；334th, side plate；335th, plagiocephaly pin；336、 Plugging block；337th, pull pin；338th, rise the heart；339th, spring；3310th, pull pin nut；3311st, steel ball；

51st, tire；52nd, axle sleeve；53rd, left half wheel pot；54th, right half wheel pot；55th, annular gusset；

61st, safety pin.

Specific embodiment

It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase Mutually combination.Describe the utility model in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

A kind of ground towing machine wheel for slide-type helicopter, including hydraulic mechanism 10, transmission mechanism 20 and hitch 30, transmission mechanism 20 contains gear hub 21, gear shaft 22 and ratch 23, and gear shaft 22 is engaged with ratch 23, and gear hub 21 is set In outside gear shaft 22 and ratch 23, hydraulic mechanism 10 can rotate gear shaft 22 by driving ratch 23, hitch 30 with The lower end of gear hub 21 is detachably connected, as shown in Figure 1.

The type of slide-type helicopter is different, and the construction of the skid 40 of slide-type helicopter is also different, and this is used for slide-type The wheel hitch 30 of the ground towing machine wheel of helicopter is containing various hanger brackets with the skid 40 suitable for different type of machines, hanger bracket Lower end with gear hub 21 is detachably connected, by changing different hanger brackets, one this be used for the ground of slide-type helicopter Towing machine wheel can apply to different slide-type helicopters.

The first hanger bracket 31 is described below, the swing seat 311 of the first hanger bracket 31 containing tubular, gear hub 21 Lower end can be plugged in swing seat 311, and swing seat 311 can be connected by the lower end of bolt and gear hub 21 and (be realized It is detachably connected), as shown in figure 1, hydraulic mechanism 10 is located at the left side of gear hub 21, the left side of swing seat 311 is fixed with compression Block 312, the lower surface of compact heap 312 is convex circular arc, and the lower surface of compact heap 312 is upper with the skid 40 of helicopter Surface matches, as shown in Figure 1 to Figure 3.

In the present embodiment, the cavity of the protuberance insertion for the upper surface of skid 40 is provided with the lower end of swing seat 311 3110, the front side of swing seat 311 and rear side (front and back of Fig. 1 papers) are equipped with patchhole, and energy is provided with the patchhole The round pin 3111 of the protuberance of skid 40 is enough inserted, the outer surface of round pin 3111 is provided with helicla flute, such as Fig. 1 and Fig. 4 Shown, the upper surface of skid 40 is provided with protuberance, and the protuberance is inserted into the lower end of the swing seat 311, the protuberance Both sides be additionally provided with pin-and-hole, in the lower end of protuberance insertion swing seat 311 after, round pin 3111 can be slotting through the patchhole Entering the pin-and-hole of the protuberance makes skid 40 be connected with swing seat 311.The right side of swing seat 311 is fixed with auxiliary support mechanism 313, auxiliary support mechanism 313 contains guide cylinder 314, and guide cylinder 314 is interior to be arranged with adjusting bolt 315, guide cylinder 314 The guide runner 316 of tubular is arranged with and adjusting bolt 315 between, the axis of adjusting bolt 315 is vertically set, be oriented to The bottom of sliding block 316 is connected with pressure strip 317, and when adjusting bolt 315 rotates, guide runner 316 and pressure strip 317 being capable of edges Vertical direction is moved.As shown in Figure 4 and Figure 5, handwheel 318 is arranged with outside the upper end of adjusting bolt 315, handwheel 318 passes through latch It is connected with adjusting bolt 315, pressure strip 317 is connected by straight pin 319 with guide runner 316, guide runner 316 Containing internal thread, the lower surface of pressure strip 317 is convex circular arc, the lower surface of pressure strip 317 and the skid of helicopter 40 upper surface matches.The effect of auxiliary support mechanism 313 is coordinated with compact heap 312, while being abutted with skid 40, makes cunning Sled 40 is the level of state, it is to avoid incline.The applicable type of the first hanger bracket 31 is：Blaubok.

Second hanger bracket 32 is described below, second hanger bracket 32 contains suspension plate 321 and connecting plate 322, connection The lower end of plate 322 is fixedly connected with suspension plate 321, and connecting plate 322 can be connected by rotary shaft 323 with the lower end of gear hub 21 It is fixed, the rotation handle 324 for rotary motion axle 323 is additionally provided with outside one end of rotary shaft 323, the two ends of rotary shaft 323 are also The anti-fall off block 325 of nylon is provided with, as shown in Figure 6.Second hanger bracket 32 and existing hanger bracket (Chinese patent CN Frame in 201914470U) it is more similar, the utility model is no longer discussed in detail.The applicable type of second hanger bracket 32 For：Helicopter-11, EC120 and squirrel.

The third hanger bracket 33 is described below, long suspension 331 of the third hanger bracket 33 containing bar shaped, suspension 331 long Containing one piece of base plate of bar shaped, 332, two pieces of risers 333 and two blocks of side plates 334, as shown in Figure 7 and Figure 8, two blocks of side plates 334 are the bottom of along The length direction of plate 332 is set, and two blocks of side plates 334 are individually fixed in both sides of the edge (two pieces of sides as shown in Figure 8 of base plate 332 Plate 334 is individually fixed in two sides long of base plate 332), two pieces of risers 333 are located between two blocks of side plates 334, two pieces of risers 333 Vertical with base plate 332 and side plate 334, two pieces of risers 333 are parallel to each other and positioned at the top of base plate 332, the lower end of gear hub 21 Can be plugged between two pieces of risers 333, the lower end of gear hub 21 can be connected by bolt with two pieces of risers 333, from And realization is detachably connected.

In the present embodiment, along the length direction of suspension 331 long, the i.e. left and right directions of Fig. 8, one end of suspension 331 long sets There is a plagiocephaly pin 325, what the other end of suspension 331 long was provided with plugging block 336 and cylindrical shape pulls pin 337, pull pin 337 through closure Block 336, pull pin 337 with the interference fits of plugging block 336, pull pin 337 center line it is horizontally disposed, pull pin and be arranged in 337 There is the heart 338 that rises, rise the heart 338 and 337 interference fits of pulling pin, as shown in Figure 9 and Figure 10, to pull pin and be provided with use between 337 and the heart 338 that rises In the spring 339 that restoring force is provided to the heart 338 that rises, 337 one end of pulling pin is provided with nut 3310 of pulling pin, and nut 3310 of pulling pin is located at Outside suspension 331 long, pull pin 337 the other end in be provided with steel ball 3311.The applicable type of the third hanger bracket 33 is：Bel 206th, Bel 407.

The skid of Bel's helicopter is respectively arranged at two ends with link, when using, will pull pin and 337 is pulled up from suspension 331 long, will The link of the insertion skid of plagiocephaly pin 335 one end, the hole for then making the link of the skid other end be aligned in plugging block 336, then make to pull out Pin 337 can be such that suspension 331 long connects with the skid of helicopter through the hole in the link insertion plugging block 336 of the skid other end Connect fixation.331 upper ends of suspension long and hitch and gear hub in the connected mode and embodiment 1 and embodiment 2 of gear hub 21 21 connected mode is identical.

The utility model is not only made that improvement to hitch 30, is also made that improvement to wheel set 50.Wheel is total It is connected with one end of gear shaft 22 by crank axle 24 into 50, after gear shaft 22 is rotated, hydraulic mechanism 10, transmission mechanism 20 and the synchronous motion upwards of hitch 30, as depicted in figs. 1 and 2.

In the present embodiment, wheel set 50 includes hub unit and tire 51, and tire 51 is sheathed on outside the hub unit, The hub unit contains axle sleeve 52, left half wheel pot 53 and right half wheel pot 54, and the fixed sleeves of axle sleeve 52 are provided with annular gusset 55, axle sleeve 52 axis overlaps with the axis of annular gusset 55, and the bottom of pot 54 is taken turns and annular gusset in the bottom of left half wheel pot 53 and right half 55 are sealedly connected and fixed, and annular gusset 55 is located between left half wheel pot 53 and the wheel pot 54 of the right side half, and left half takes turns pot 53 and right half wheel pot 54 in the both sides of annular gusset 55 mirror image each other, and the bottom of the bottom of left half wheel pot 53 and right half wheel pot 54 is by bolt and ring Shape gusset 55 is sealedly connected and fixed, and annular gusset 55 is welded with axle sleeve 52, as shown in figure 11.The hub unit have intensity it is high, It is lightweight, the advantages of safety coefficient is big.

In the present embodiment, hydraulic mechanism 10 contains plunger displacement pump 11 and oil cylinder 12, and oil cylinder 12 is contained within oil cylinder push rod 13, oil Cylinder push rod 13 is abutted with ratch 23, and the axis of ratch 23 is horizontally disposed, and oil drum 14, plunger displacement pump are arranged with outside oil cylinder 12 11 can make oil cylinder push rod 13 move right to hydraulic oil is pressed into oil cylinder 12, and oil cylinder push rod 13 can drive ratch 23 to move right Move and make gear shaft 22 to rotate, the top of gear hub 21 is provided with portable 25, and gear hub 21 is externally connected with protective cover 60, oil cylinder top Bar 13, ratch 23 and protective cover 60 set gradually along the axis direction of ratch 23, and protective cover 60 is that one end closing other end is opened Tubular structure, open end and the gear hub 21 of protective cover 60 be tightly connected, and protective cover 60 is connected with safety pin 61, when ratch 23 One end enter protective cover 60 setting position when, safety pin 61 is inserted into ratch 23 maintains static the position of ratch 23.

The lower end of gear hub 21 can be removable with the first hanger bracket 31, second hanger bracket 32 or the third hanger bracket 33 Unload connection.I.e. the lower end of gear hub 21 can as needed install the first hanger bracket 31, second hanger bracket 32 and the third is outstanding One in hanger 33.Below by taking the first hanger bracket 31 as an example, the ground towing machine wheel for being used for slide-type helicopter is introduced Repair, maintain and use process.

1st, the L-HM46# hydraulic oil that filling is cleaned in oil drum 14, is defined by oil cylinder upper limb, unsuitable excessive.

2nd, side's lid of gear hub 21 and wheel hub inner side are provided with oily nozzle, to fill enough ZG-2 calcium-base grease.

The towing machine wheel is lifted across being placed on aircraft bracket hitching position when the 3rd, using.

4th, assistant supporting mechanism 313 is adjusted, the protuberance of the upper surface of skid 40 is inserted under the swing seat 311 In end, when the position of the pin-and-hole on the protuberance is corresponding with the patchhole of the both sides of swing seat 311, round pin 3111 is worn Cross the patchhole and insert the pin-and-hole, skid 40 can be made to be connected with swing seat 311, as shown in Figure 1 and Figure 4.In addition, circle is inserted The outer surface of pin 3111 is provided with helicla flute, and such round pin 3111 can be with self-locking after rotating.

5th, safety pin is extracted, unloading valve is closed clockwise.

6th, pressure handle 15 is inserted into pressure handle socket, gradually presses plunger displacement pump 11.

7th, while picking-up, the pin-and-hole looked on protective cover 60 of sight be directed at the hole on ratch 23 and (that is, holds up to ideal height Degree), insert safety pin 61, you can mobile operation.

8th, when movement runs to potential drop and falls, pressure handle 15 is slightly pressed, loosens safety pin 61 and extract, counterclockwise slow turn Unloading valve.

9th, pin caudal peduncle is hung in upward turn, extracts and hangs pin, proposes the wheel group.

10th, anti-plug pressure handle 15, tangles notch, you can pull away, and carries out task again or to storeroom.

This is used for the hydraulic mechanism 10 of the ground towing machine wheel of slide-type helicopter and the working method of transmission mechanism 20 with State patent CN 102358431A's and CN201914470U is more similar, and the utility model is no longer discussed in detail.

The above, only specific embodiment of the utility model, it is impossible to which the scope that utility model is implemented, institute are limited with it With the displacement of its equivalent assemblies, or the equivalent variations made according to the utility model scope of patent protection and modification, should all still fall within The category that this patent is covered.In addition, between technical characteristic and technical characteristic in the utility model, technical characteristic and technical scheme Between, can be used with independent assortment between technical scheme and technical scheme.

Claims

1. a kind of ground towing machine wheel for slide-type helicopter, it is characterised in that the ground for slide-type helicopter Towing machine wheel include hydraulic mechanism (10), transmission mechanism (20) and hitch (30), transmission mechanism (20) containing gear hub (21), Gear shaft (22) and ratch (23), gear shaft (22) are engaged with ratch (23), and gear hub (21) is arranged at gear shaft (22) and tooth Bar (23) outward, hydraulic mechanism (10) can by drive ratch (23) make gear shaft (22) rotate, the lower end of gear hub (21) with Hitch (30) is detachably connected.

2. the ground towing machine wheel for slide-type helicopter according to claim 1, it is characterised in that hitch (30) Including the first hanger bracket (31), the swing seat (311) of the first hanger bracket (31) containing tubular, the lower end of gear hub (21) Can be plugged in the upper end of swing seat (311), swing seat (311) can be connected solid with the lower end of gear hub (21) by bolt Fixed, hydraulic mechanism (10) is fixed with compact heap (312), compact heap on the left of the left side of gear hub (21), swing seat (311) (312) lower surface is convex circular arc, the upper surface phase of the lower surface of compact heap (312) and the skid (40) of helicopter Matching.

3. the ground towing machine wheel for slide-type helicopter according to claim 2, it is characterised in that swing seat (311) Lower end in be provided with for skid (40) upper surface protuberance insertion cavity (3110), the front side of swing seat (311) and after Side is equipped with patchhole, and the round pin (3111) of the protuberance for being inserted into skid (40) is provided with the patchhole, swings Auxiliary support mechanism (313) is fixed with the right side of seat (311), auxiliary support mechanism (313) is oriented to containing guide cylinder (314) Adjusting bolt (315) is arranged with cylinder (314), guide runner is provided between guide cylinder (314) and adjusting bolt (315) (316), the axis of adjusting bolt (315) is vertically set, and the bottom of guide runner (316) is connected with pressure strip (317), When adjusting bolt (315) rotates, guide runner (316) and pressure strip (317) can be moved vertically.

4. the ground towing machine wheel for slide-type helicopter according to claim 3, it is characterised in that adjusting bolt (315) handwheel (318) is arranged with outside upper end, handwheel (318) is connected by latch with adjusting bolt (315), pressure strip (317) it is connected with guide runner (316) by straight pin (319), guide runner (316) contains internal thread, pressure strip (317) lower surface is convex circular arc, the upper surface phase of the lower surface of pressure strip (317) and the skid (40) of helicopter Matching.

5. the ground towing machine wheel for slide-type helicopter according to claim 1, it is characterised in that hitch (30) Including second hanger bracket (32), second hanger bracket (32) contains suspension plate (321) and connecting plate (322), connecting plate (322) lower end is fixedly connected with suspension plate (321), and connecting plate (322) can be by rotary shaft (323) and gear hub (21) Lower end is connected, and the rotation handle (324) for rotary motion axle (323) is additionally provided with outside one end of rotary shaft (323).

6. the ground towing machine wheel for slide-type helicopter according to claim 1, it is characterised in that hitch (30) Including the third hanger bracket (33), long suspension (331) of the third hanger bracket (33) containing bar shaped, suspension (331) long is contained One piece of base plate of bar shaped (332), two pieces of risers (333) and two pieces of side plates (334), two pieces of side plates (334) along base plate (332) length Degree direction is set, and two pieces of side plates (334) are individually fixed in the both sides of the edge of base plate (332), and two pieces of risers (333) are positioned at two pieces of sides Between plate (334), two pieces of risers (333) are parallel to each other and positioned at the top of base plate (332), and the lower end of gear hub (21) can insert It is connected between two pieces of risers (333), the lower end of gear hub (21) can be connected by bolt with two pieces of risers (333).

7. the ground towing machine wheel for slide-type helicopter according to claim 6, it is characterised in that hung along long (331) length direction, one end of suspension (331) long is provided with plagiocephaly pin (325), and the other end of suspension (331) long is provided with closure Pulling pin (337) for block (336) and cylindrical shape, pulls pin (337) through plugging block (336), pull pin (337) and plugging block (336) Interference fits, pull pin (337) center line it is horizontally disposed, to pull pin and be arranged with the heart that rises (338), the heart that rises (338) in (337) With (337) interference fits of pulling pin, the bullet being provided with and the heart that rises (338) between for providing restoring force to the heart that rises (338) of pulling pin (337) Spring (339), one end of (337) of pulling pin is provided with nut of pulling pin (3310), and nut of pulling pin (3310) outward, is pulled out positioned at suspension (331) long Steel ball (3311) is provided with the other end for selling (337).

8. the ground towing machine wheel for slide-type helicopter according to claim 1, it is characterised in that described for skid The ground towing machine wheel of formula helicopter also includes wheel set (50), and wheel set (50) is by crank axle (24) and gear shaft (22) One end be connected, after gear shaft (22) is rotated, hydraulic mechanism (10), transmission mechanism (20) and hitch (30) are same Step motion upwards.

9. the ground towing machine wheel for slide-type helicopter according to claim 8, it is characterised in that wheel set (50) Including hub unit and tire (51), tire (51) is sheathed on outside the hub unit, and the hub unit contains axle sleeve (52), left half Wheel pot (53) and right half wheel pot (54), axle sleeve (52) fixed sleeves are provided with annular gusset (55), axis and the annular of axle sleeve (52) The axis of gusset (55) overlaps, and the bottom of the bottom of left half wheel pot (53) and right half wheel pot (54) seals with annular gusset (55) It is connected, annular gusset (55) between left half wheel pot (53) and right half wheel pot (54), take turns by left half wheel pot (53) and right half Pot (54) is in the both sides of annular gusset (55) mirror image each other.

10. the ground towing machine wheel for slide-type helicopter according to claim 1, it is characterised in that hydraulic mechanism (10) containing plunger displacement pump (11) and oil cylinder (12), oil cylinder (12) is contained within oil cylinder push rod (13), oil cylinder push rod (13) and ratch (23) abut, the axis of ratch (23) is horizontally disposed, oil drum (14), plunger displacement pump (11) energy are arranged with outside oil cylinder (12) Enough to make oil cylinder push rod (13) mobile to press-in hydraulic oil in oil cylinder (12), oil cylinder push rod (13) can drive ratch (23) mobile simultaneously Rotate gear shaft (22), the top of gear hub (21) is provided with portable handle (25), and gear hub (21) is externally connected with protective cover (60), Oil cylinder push rod (13), ratch (23) and protective cover (60) set gradually along the axis direction of ratch (23), and protective cover (60) is one End seal closes the tubular structure of other end opening, and open end and the gear hub (21) of protective cover (60) are tightly connected, protective cover (60) Safety pin (61) is connected with, when one end of ratch (23) enters the setting position of protective cover (60), safety pin (61) can be inserted Entering ratch (23) fixes the position of ratch (23).