CN100512709C - Portable carry goods moving device - Google Patents

Abstract

The invention relates to a portable object carrying shifter which belongs to the technical field of handcars. The invention is characterized in that a drag link mechanism is arranged under an object stage; a roller mechanism is arranged at the non-drawable end of the drag link mechanism; support legs are fixed under the object stage. When laid flat the carried object is supported completely by the support legs fixed under the object stage and wheels are in a suspension state without any load; in need of shifting, the drag link of the drag link mechanism is drawn out and is lifted upward to make the object stage be supported by the wheels in a slant state which facilitates shifting. The invention has simple and compact structure and high carrying capacity; the drawable drag link mechanism and the roller system are arranged reasonably to ensure the invention to shift conveniently and effortlessly.

Description

A kind of portable carry goods moving device

Technical field

The present invention relates to a kind of portable carry goods moving device, belong to the hand-propelled vehicle technical field.

Background technology

The Chinese patent publication number is to disclose a kind of pull bar that is used for the case and bag of belt wheel in the document of CN2202430.It has comprised and has had the thread segment outer tube that can be connected with casing; Affixed and the interior pipe of kink in outer tube of top and handle; A cover of installing between inner and outer pipes comprises the positioner of the conical plunger of band saddle in radial direction through hole, the ball on the inner tubal wall and the interior pipe on the outer tube; One cover comprises that its two ends are fixed in plunger and interior pipe upper spring respectively, are fixed in center-pole, the adjusting rod that is connected with center-pole on the plunger, can limit the adjusting device of the limiting through hole of center-pole amount of movement.

The described conical plunger that has saddle that is used to push or discharge the ball location of the document, the structure that has lacked the circumferential displacement of the restriction relative tubular axis line of ball on its saddle, therefore, ball is on tumbling saddle the time, might because circumferential displacement takes place the described radial hole of misalignment, thereby lose the function of recovering the location.In addition, the reset mode with the extension spring resilience that described technical scheme is selected for use must roll out hook-shaped connecting portion at the extension spring two ends, also need be connected structure accordingly having to make with the extension spring connecting portion on the part of annexation with extension spring simultaneously, the manufacturing process more complicated also is not easy to assembling.

In addition, the Chinese patent publication number is the improvement structure that also discloses a kind of locking tip of trunk draw bar in the document of CN2544579, the spring of blocking device is arranged in perpendicular to the handle motion direction in its pull bar, and its locking tip is applied horizontal force to produce block action.Described technical scheme structure more complicated, the spring lateral arrangement, assembly process process is relatively poor.

Summary of the invention

The objective of the invention is to overcome above-mentioned weak point, thereby provide a kind of manufacturing and assembly technology more easy, use the portable carry goods moving device that has more reliability.

Main solution of the present invention is achieved in that

The present invention mainly comprises objective table, drag link mechanism and idler wheel mechanism, and the feature drag link mechanism is contained in below the objective table, and idler wheel mechanism is contained in the end that drag link mechanism can not pull, fixed feet below objective table.Contained object is supported by the leg that is fixed on below the objective table when flat condition fully, and wheel is in uncharged vacant state, in the time of need dividing a word with a hyphen at the end of a line, the pull bar of drag link mechanism can be extracted out, and upwards start, form heeling condition by wheel support, be convenient to push-and-pull and move.

Described drag link mechanism is made up of stay pipe, pull bar, pull bar handle, spacer ferrule, push rod, locating slide sleeve, locating shaft, locking ball, spring, pull bar inserts an end of stay pipe, pull bar and locating slide sleeve are fixed, locating shaft is housed in the locating slide sleeve, spring housing is contained on the locating shaft, one end of spring is pressed on the end face of locating slide sleeve, locating shaft is connected with push rod, have steel ball on the locating slide sleeve and hold the hole, the steel ball appearance is equipped with steel ball in the hole, the pull bar handle is connected with pull bar, and spacer ferrule is stuck between stay pipe and the pull bar.

Pull bar in the described drag link mechanism can be a nested type more piece pull bar.

Described pull bar handle is made up of handle set, handle cover, pressing slide block, compression spring, tapping screw, have the screw hole of two symmetric arrangement on the handle set, tapping screw passes screw hole handle set is connected with handle cover, the pressing slide block is included in wherein, pressing slide block inside is provided with spring base, and the two ends of compression spring are supported on the spring base respectively.

Described handle set two ends are provided with shoulder hole, and the shoulder hole side has the pull bar locating hole.

Be respectively equipped with down hole clipping and last hole clipping on the described stay pipe, can also between described two hole clippings, increase at least one hole clipping.

Described idler wheel mechanism is made up of wheel, wheel carrier, wheel shaft, bayonet lock, positioning retainer ring, have on the described wheel carrier two that be arranged in parallel, perpendicular to the installing hole of axle axis direction, the hole internal diameter is identical with the stay pipe external diameter.

Described two that be arranged in parallel, have bolt hole with described parallel hole coaxial line perpendicular to the installing hole outer end of axle axis direction.

Described drag link mechanism, leg removably are fixed on respectively below the objective table, and idler wheel mechanism removably is contained in an end of drag link mechanism.

Locking ball in the described drag link mechanism is installed in pull bar by a top side.

Described pull bar is provided with a hollow screw, and its axis is provided with a through hole, and this through hole can hold push rod and pass therethrough.

Described idler wheel mechanism can also be installed on the objective table.

Compared with the prior art the present invention has the following advantages:

1, because drag link mechanism is arranged in the bottom of objective table, it is very compact all to fold when resetting whole apparatus structure at pull bar, is easy to carry about with one.

2, the reasonable cooperation of drawing and pulling type drag link mechanism and single shaft two-wheeled idler wheel mechanism makes moving and turning to not only flexible but also save manpower of package unit.

3, be arranged in the spring of pull bar inside and axis and pull bar dead in line, and make the simple in structure and practical of drag link mechanism by the scheme of steel ball self gravitation enforcement release.

4, also affixed between idler wheel mechanism and the drag link mechanism by the endoporus and the external cylindrical surface suit of sufficient length, have very strong counter-bending load-carrying ability, make the more stable work of idler wheel mechanism reliable.

5, dismountable fixed form makes that the maintenance operation of drag link mechanism or idler wheel mechanism is more convenient.

6, do circumferentially location with dog screw between pull bar and pull bar handle, affixed with hollow screw, not only firm in structure durable, and guaranteed rigging position correct between locking ball and standing block hole.

7, in the technical program except that minority mouldings such as handle, base plate and wheel carrier, most of part and design of part key element are formed by revolving body, the surface of revolution and plane, manufacturing process is simple, is convenient to produce in batches.

Description of drawings

Fig. 1 is the attitude schematic diagram after the present invention is loaded with article W and pull bar is extracted out when being horizontal.

Fig. 2 is the attitude schematic diagram that the present invention is loaded with article W, is also landed by wheel after being started.

Fig. 3 is the polycrystalline substance schematic diagram that looks up from the present invention bottom.

Fig. 4 is a lateral plan of seeing structure of the present invention from horizontal direction.

Fig. 5 is that K among Fig. 4 of the present invention is to view.

Fig. 6 is that H among Fig. 4 of the present invention is to view.

Fig. 7 is the partial view I among Fig. 3 of the present invention, i.e. handle and pull bar syndeton schematic diagram.

Fig. 8 is the A-A profile among Fig. 3 of the present invention.

Fig. 9 is a pull bar sub-assembly schematic diagram of the present invention.

Figure 10 is the combination schematic diagram of pull bar handle of the present invention.

Figure 11 is the assembly schematic diagram of parts such as the wheel of idler wheel mechanism of the present invention and wheel shaft.

Figure 12 is that the present invention sees the scheme of installation of axle with bayonet lock from Figure 10 wheel outer end.

Figure 13 is the B-B removed sectional view among Fig. 9 of the present invention.

Figure 14 is the another kind of optional structure of B-B section among Fig. 9 of the present invention.

Figure 15 is the C-C generalized section behind the dismounting push rod 25 among Fig. 3 of the present invention, shows the hole inner baffle shoulder structure of pommel holder 12.

The specific embodiment

Embodiment during following the present invention incites somebody to action in conjunction with the accompanying drawings is further described:

The present invention is by objective table 1, and wheel is held holder 11, pommel holder 12, baffle plate 13, drag link mechanism 2, stay pipe 21, nut 21a, bolt hole 21b, following hole clipping 21c, last hole clipping 21d, pull bar 22, ring nut 22a, circumferentially locating hole 22b, press solidly a 22c, pull bar handle 23, handle set 23a, handle cover 23b, pressing slide block 23c, spring 23d, tapping screw 23e, shoulder hole 23f, blind hole 23g, pull bar locating hole 23h, spacer ferrule 24, push rod 25, locating slide sleeve 26, steel ball holds hole 26a, locating shaft 27, location cylinder 27a, discharge annular groove 27b, locking ball 28, spring 29, pin 210, idler wheel mechanism 3, wheel 31, wheel carrier 32, wheel shaft 33, axle bayonet lock 34, positioning retainer ring 35, leg 4, bolt 5, nut 6, bolt 7, dog screw 8, hollow screw 9 compositions such as grade.

As shown in Figure 1 and Figure 2: the present invention adopt drag link mechanism 2 be contained in objective table 1 below, one end of drag link mechanism 2 has the pull bar 22 that can extract out, the other end is equipped with idler wheel mechanism 3, support by the leg 4 that is fixed on below the objective table 1 during static horizontal loading state, wheel 31 was in vacant state and did not stress this moment, when needs are mobile, the pull bar 22 of drag link mechanism 2 can be extracted out and upwards started, form the heeling condition that supports by wheel 31 and be convenient to push-and-pull mobile article W.

As shown in Figure 3, Figure 4: drag link mechanism 2 has two groups of on all four internal and external casing combinations of that be arranged in parallel, version, and the outside is a stay pipe 21, and to be 22, one handles 23 of pull bar connect together extracted out the end of two pull bars 22 in inside.Corresponding therewith, longitudinally be arranged with two groups of pull bar supporting seats below the objective table 1 in parallel, form by former and later two pedestals for every group, be respectively wheel end holder 11 and pommel holder 12, two holders all have with stay pipe 21 external diameters and adapt, the seat hole that stay pipe 21 is slided therein, two holes have common axis, the seat hole of wheel end holder 11 has the bolt hole that axis is parallel to objective table 1 plane and intersects with the seat axially bored line, stay pipe 21 is held the bolt hole place of holder 11 corresponding to wheel in the installation site, also have and this bolt hole coaxial line, with diameter, bolt hole 21b with stay pipe 21 lateral direction penetratings, bolt 5 is from passing this corresponding bolt hole, fastening by nut 6 at the opposite side of wheel end holder 11, stay pipe 21 and objective table 1 are fixed together, make stay pipe 21 axial float can not take place circumferential rotation can not take place with respect to objective table 1, stay pipe 21 after the installation is concordant with the outer face of pommel holder 12 by the end face of pull bar handle 23 1 ends, and the other end of stay pipe 21 then stretches out wheel end holder 11 1 segment distances.This section of stretching out end has the nut 21a of welding, will be as the installation tie point of idler wheel mechanism 3.

As Fig. 3, shown in Figure 8: on the wheel carrier 32 of idler wheel mechanism 3 corresponding to the position of stay pipe 21, there are two to be arranged in parallel, axis normal is in the axis of wheel shaft 33, internal diameter and the identical hole of stay pipe 21 external diameters, in the corresponding auxiliary section sliding sleeve of stay pipe 21 can being gone into, distance between two parallel holes is identical with the distance of 21 of two stay pipes, effective length of fit in hole is greater than the outside diameter of stay pipe 21 but the length of stretching out 11 sections of wheel end holders less than this pipe, this hole other end on this wheel carrier 32 has a bolt hole, the outer face of this bolt hole is a plane perpendicular to axially bored line, and diameter of bolt hole is slightly larger than the major diameter of thread of the nut 21a that is welded in stay pipe 21 these end pores.During installation the pair of parallel borehole jack of wheel carrier 32 gone into to be contained on this section of two stay pipes 21 tram, that stretch out in wheel end holder 11, and penetrate bolt hole on the wheel carrier, be tightened on respectively on the nut 21a of two stay pipes, 21 ends with bolt 7.Stay pipe 21 extension elongations are longer than lacking for hole length, the end that can guarantee stay pipe 21 is pressed on the inner side plane of wheel carrier 32 the above bolt hole, do not make between the wheel end holder 11 on wheel carrier 32 and the objective table 1 and push, guaranteed that wheel end holder 11 is not subjected to the additional load effect, thereby avoided it that initial failure takes place.

As shown in figure 15: pommel holder 12 has a hole inner baffle shoulder in the side away from wheel end holder 11, the aperture of shoulder block can make pull bar 22 therefrom pass, but the spacer ferrule 24 that is loaded on stay pipe 21 oral areas and is placed in pull bar 22 outer round surface can not pass through, and guarantees that this spacer ferrule 24 avoids coming off.Spacer ferrule 24 is used for eliminating the radial clearance between stay pipe 21 and the pull bar 22, also plays sealing function simultaneously, prevents that dust from entering.

As shown in Figure 9: drag link mechanism 2 is by stay pipe 21, pull bar 22, pull bar handle 23, spacer ferrule 24, push rod 25, locating slide sleeve 26, locating shaft 27, locking ball 28, spring 29 and sell 210 and form.Insert an end of stay pipe 21 at pull bar 22, with the method for pressing solidly pull bar 22 and the locating slide sleeve 26 that is sleeved on wherein are consolidated, on pull bar 22, form and press solidly a 22c (what is called presses solidly, be about to a hard ground instrument and impact cover thin-walled parts surface outside in two parts that are sleeved on together with conical head, make it to produce depressed deformation, thereby two parts are consolidated), locating slide sleeve 26 both sides all have steel ball and hold hole 26a (the good and installation nothing branch anyway of processing technology), and the steel ball that steel ball 28 is contained in by a last side holds in the 26a of hole.Locating slide sleeve 26 inside also are set with locating shaft 27, the pilot hole that the small end of locating shaft 27 passes locating slide sleeve 26 slidably points to pull bar handle 23 directions, the small end of this locating shaft 27 has a prong by this axis, have a pin-and-hole perpendicular to the prong direction, the intersect vertical axis of pin-and-hole axis and locating shaft 27, the circle pine is enclosed within on the small end external cylindrical surface of locating shaft 27 in one spring 29, one end of spring 29 is pressed on the end face of locating slide sleeve 26, the other end is through 210 limits of pin in the locating shaft 27 small end pin-and-holes, this moment, spring 29 had certain pre compressed magnitude, maintained resilience potential energy.Push rod 25 has a flat part structure away from an end of pull bar handle 23, its thickness is slightly less than the width of locating shaft 27 small end prongs, also have pin-and-hole on this flat part structure, this flat part is inserted in the prong of locating shaft 27 small ends, both pin-and-holes are corresponding just, pin 210 passes described pin-and-hole, and locating shaft 27 and push rod 25 are coupled together.

Figure 10 shows that the structure of pull bar handle 23, handle set 23a locatees close the combination with handle cover 23b by the seam of periphery, pressing slide block 23c is contained wherein, handle set 23a has the screw hole of two symmetric arrangement, inner surface symmetrical centre place also is provided with a spring base, with respect to described screw hole location two cylindric lugs are arranged in the handle cover 23b, tapping screw 23e passes described screw hole and is tightened on the described cylinder lug handle set 23a and handle cover 23b are fixed together, the cylinder lug is except bearing tapping screw 23e screw-in, the effect that also has lead, the last relevant position of pressing slide block 23c has two pilot holes and described lead adapts, and both relations can guarantee that pressing slide block 23c stably moves back and forth along the direction that is directed.Relative with the spring base in handle set 23a centre, also there is a spring base pressing slide block 23c inside center position, the two ends of a compression spring 23d just are supported on described two spring bases respectively, it is spacious that its elastic force can keep not producing between pressing slide block 23c and adjacent parts pine, can guarantee that again the operator cosily depresses it with finger.The shoulder hole 23f at handle set 23a two ends is inserted in the end of pull bar 22 wherein slidably, and shoulder hole 23f side has pull bar locating hole 23h, is used for the circumferential location of pull bar 22.There is blind hole 23g at pressing slide block 23c two ends, the end of push rod 25 can be placed in one just, push pressing slide block 23c and can promote push rod 25 generation release actions.

As Fig. 5, shown in Figure 7: the syndeton of handle 23 and pull bar 22.At first the end of pull bar 22 is inserted among the shoulder hole 23f of handle set 23a during installation, pull bar locating hole 23h on the pull bar handle set 23a and the circumferential locating hole 22b on the pull bar 22 are aligned, with dog screw 8 screws pull bar 22 is circumferentially located, pull bar 22 is provided with a hollow screw 9, its axis is provided with a through hole, and this through hole can hold push rod 25 and pass therethrough, and passes the aperture of the shoulder hole 23f of handle set 23a, be tightened on the ring nut 22a, handle set 23a and pull bar 22 are fastenedly connected.

Under the generating set duty, location cylinder 27a withstands locking ball 28, makes it to be stuck in down among the hole clipping 21c, and pull bar 22 remains on the curling position.When needs pull pull bar 22, push pressing slide block 23c on the handle 23 with hand, promote push rod 25, through pin 210 locating shaft 27 is moved in locating slide sleeve 26, when the position that it is suitable that both relatively move, location cylinder 27a disengages with locking ball 28 and discharges annular groove 27b when relative with locking ball, and this steel ball leans on the gravity of self to leave down hole clipping 21c and falls into this annular groove, lock-out state between stay pipe 21 and the pull bar 22 obtains removing, and can extract pull bar 22 out this moment.In the pull process, unclamp pressing slide block 23c, the restoring force of spring 29 makes locating shaft 27 have the tendency of returning the home position, the coniform inclined-plane that discharges annular groove 27b is outwards pushed steel ball 28, but because steel ball 28 is fettered by the inner surface that steel ball holds hole 26a and stay pipe 21, pull bar 22 is continued with relative slip between the stay pipe 21, move to when relative up to steel ball with last hole clipping 21d, the restoring force of spring 29 upwards springs in the hole clipping 21d steel ball 28, locking rebulids, and 22 relative positions of stay pipe 21 and pull bar are fixed once more.When needing to draw drag link mechanism 2 in, as long as press pressing slide block 23c, said process can reverse realization.

When drag link mechanism 2 is assemblied in base plate 6, note, by a top side, otherwise the situation that can't lock can occur in the time of must making locking ball 28 be in normal operation position.

As shown in figure 13: pull bar 22 has at the outer round surface with the ring nut 22a of pull bar handle 23 links cuts flat structure, screw-in that can tolerant dog screw 8.

As shown in figure 14: ring nut 22a also can be after affixed with pull bar 22, joins to process screwed hole for dog screw 8 screw-ins.

As Figure 11, shown in Figure 12: wheel 31 is installed on the wheel shaft 33, wheel shaft 33 ends in wheel 31 outsides have the pin-and-hole perpendicular to axle axis, an axle relies on its intrinsic elasticity to remain on the outside of positioning retainer ring 35 reliably with bayonet lock 34, guarantees that wheel 31 can not come off.Wheel shaft 33 usefulness injection moulding process are fixed on the wheel carrier 32.

As Fig. 3, shown in Figure 6: objective table 1 upper surface has a baffle plate 13 with objective table one injection molded by idler wheel mechanism 3 one ends, described baffle plate 13 can limit contained object W unlikely downslide when heeling condition, also leave two slotted holes on the baffle plate 13, but nationality is tied up contained object W with fixing flexible rope or belt.

Claims (11)

1, a kind of portable carry goods moving device, mainly comprise objective table (1), drag link mechanism (2), idler wheel mechanism (3), drag link mechanism (2) be contained in objective table (1) below, idler wheel mechanism (3) is contained in the end that drag link mechanism (2) can not pull, fixed feet (4) below objective table (1), it is characterized in that described drag link mechanism (2) is by stay pipe (21), pull bar (22), pull bar handle (23), spacer ferrule (24), push rod (25), locating slide sleeve (26), locating shaft (27), locking ball (28), spring (29) is formed, pull bar (22) inserts an end of stay pipe (21), pull bar (22) is fixing with locating slide sleeve (26), locating shaft (27) is housed in the locating slide sleeve (26), spring (29) is sleeved on the locating shaft (27), one end of spring (29) is pressed on the end face of locating slide sleeve (26), the pin (210) that the other end of spring (29) is through in locating shaft (27) the small end pin-and-hole is limit, locating shaft (27) is connected with push rod (25), have steel ball on the locating slide sleeve (26) and hold hole (26a), in the steel ball appearance hole (26a) steel ball (28) is housed, pull bar handle (23) is connected with pull bar (22), and spacer ferrule (24) is stuck between stay pipe (21) and the pull bar (22).

2, a kind of portable carry goods moving device according to claim 1 is characterized in that the pull bar (22) in the described drag link mechanism (2) can be a nested type more piece pull bar.

3, a kind of portable carry goods moving device according to claim 1, it is characterized in that described pull bar handle (23) is by handle set (23a), handle cover (23b), pressing slide block (23c), compression spring (23d), tapping screw (23e) is formed, have the screw hole of two symmetric arrangement on the handle set (23a), tapping screw (23e) passes screw hole handle set (23a) is connected with handle cover (23b), pressing slide block (23c) is included in wherein, pressing slide block (23c) inside center position is provided with a spring base, handle set (23a) inner surface symmetrical centre place is provided with a spring base, compression spring (23d) end is supported on the inner spring base of pressing slide block (23c), and compression spring (23d) other end is supported on the interior spring base of handle set (23a).

4, a kind of portable carry goods moving device according to claim 3 is characterized in that described handle set (23a) two ends are provided with shoulder hole (23f), and shoulder hole (23f) side has pull bar locating hole (23h).

5, a kind of portable carry goods moving device according to claim 1 is characterized in that being respectively equipped with down on the described stay pipe (21) hole clipping (21c) and last hole clipping (21d), can also increase at least one hole clipping between described two hole clippings (21c, 21d).

6, a kind of portable carry goods moving device according to claim 1, it is characterized in that described idler wheel mechanism (3) is made up of wheel (31), wheel carrier (32), wheel shaft (33), bayonet lock (34), positioning retainer ring (35), have on the described wheel carrier (32) two that be arranged in parallel, perpendicular to the installing hole of wheel shaft (33) axis direction, the hole internal diameter is identical with stay pipe (21) external diameter.

7, a kind of portable carry goods moving device according to claim 6, it is characterized in that described two that be arranged in parallel, have bolt hole with described parallel hole coaxial line perpendicular to the installing hole outer end of wheel shaft (33) axis direction.

8, a kind of portable carry goods moving device according to claim 1 is characterized in that described drag link mechanism (2), leg (4) removably are fixed on respectively below the objective table (1), and idler wheel mechanism (3) removably is contained in an end of drag link mechanism (2).

9, a kind of portable carry goods moving device according to claim 1 is characterized in that the locking ball (28) in the described drag link mechanism (2) is installed in pull bar by a top side.

10, a kind of portable carry goods moving device according to claim 1 is characterized in that being provided with a hollow screw (9) in the described drag link mechanism (2), and its axis is provided with a through hole, and this through hole can hold push rod (25) and pass therethrough.

11, a kind of portable carry goods moving device according to claim 1 is characterized in that described idler wheel mechanism (3) can be installed on the objective table (1).

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