CN219325836U - Gathering type folding handcart - Google Patents

Abstract

The utility model discloses a gathering type folding handcart, wherein a frame comprises a front wall, a rear wall, a frame body formed by two symmetrical side walls, a bottom frame at the bottom of the frame body and four rollers respectively arranged at two sides of the front wall and two sides of the rear wall, the front wall comprises two vertical pipes, two upper fixing seats, two lower fixing seats and a Y-shaped folding assembly, the upper and lower ends of each vertical pipe are correspondingly provided with the upper fixing seats and the lower fixing seats, and the rollers are arranged at the bottom of the vertical pipe; the upper and lower ends of either left or right side of the Y-shaped folding component are respectively riveted with the upper fixing seat and the lower fixing seat; the rear wall and the front wall have the same structure; the underframe comprises a central connecting seat, two telescopic pipes, two side connecting seats and four supporting pipes; the side wall comprises two lateral transverse pipes, two X-shaped connecting rods formed by cross riveting a long pipe and a short pipe and a middle lateral pipe. Each surface of the frame can be folded and stored, the gathering is centralized, the volume is small, and the unfolding and folding are convenient and quick.

Description

Gathering type folding handcart

Technical Field

The utility model belongs to the technical field of trolleys, and particularly relates to a gathering type folding trolley.

Background

The handcart is used as a tool for on-site material transportation in industrial production and shopping of people, and brings great convenience to production and life. Common trolleys, one of which is non-foldable, are carried by mounting wheels under a flat plate, and the trolleys cannot be folded, so that a large space is occupied when the trolleys are not used; the other is foldable and designed for portability.

The utility model discloses a fixed knot of folding handcart constructs in chinese patent with publication No. "CN205469183U", this folding handcart includes car frame and locates a plurality of wheels of car frame bottom, the car frame includes two framework and the middle part support frame of locating between two framework that the front and back symmetry set up, this middle part support frame includes two worker's pole and connects a horizontal connecting rod of two worker's poles, and each worker's pole has upper short pole, lower short pole and connects the montant of upper short pole, lower short pole, and the upper short pole is longer than lower short pole, two framework crossbars of car frame pin joint respectively in the upper short pole and the both ends of lower short pole of each worker's pole, wherein the framework crossbars of pin joint in worker's pole lower short pole are connected with worker's pole through a pin joint piece respectively, and the one end of each pin joint piece is fixed with the framework crossbars, and the other end pin joint is on the lower short pole of worker's pole, and each pin joint piece is equipped with a draw-in groove respectively towards one side of lower short pole, and at least one of them worker's pole both sides are equipped with one and draw-in groove matched with respectively, when placing the draw-in groove in the fastener in place, with the framework, with the pin joint state, and the two pin joint piece is the pivot joint is fixed for the opposite pivot joint when two pieces are expanded. The fixed structure of the folding handcart is compared with the traditional non-folding flat handcart, although the purpose of folding and containing is achieved, the front side and the rear side of the folding handcart are achieved through the frame body, the frame body is fixed in structure, the width of the frame body is not changed when the folding handcart is folded, the width of the front side and the width of the rear side are limited, the whole width of the front face and the rear face after the folding handcart is not changed, only the middle supporting frame between the two frame bodies is folded, the front length and the rear length are changed, the folding size is still larger, and research and improvement are still needed to reduce the size of the gathering whole handcart.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides the cross folding cart which is integrally folded for storage, has a relatively concentrated volume, and is convenient and quick to unfold and fold.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: the frame comprises a front wall, a rear wall, a frame body formed by two symmetrical side walls, a bottom frame at the bottom of the frame body and four rollers respectively arranged at two sides of the front wall and two sides of the rear wall, wherein the front wall comprises two vertical pipes, two upper fixing seats, two lower fixing seats and a Y-shaped folding assembly, the upper and lower ends of each vertical pipe are correspondingly provided with the upper fixing seat and the lower fixing seat, and the rollers are arranged at the bottom of the vertical pipe; the upper and lower ends of either left or right side of the Y-shaped folding component are respectively riveted with the upper fixing seat and the lower fixing seat; the rear wall and the front wall have the same structure; the chassis comprises a central connecting seat, two telescopic pipes, two side connecting seats and four supporting pipes, four corners of the central connecting seat are respectively riveted with one end of one supporting pipe, the other end of the supporting pipe is riveted with a lower fixing seat, the left side and the right side of the central connecting seat are respectively riveted with one end of one telescopic pipe, and the other end of the telescopic pipe is riveted with the side connecting seat; the side wall comprises two lateral transverse pipes, two X-shaped connecting rods formed by cross riveting a long pipe and a short pipe and a middle lateral pipe; the two X-shaped connecting rods are symmetrically arranged, the upper end of a short pipe of one X-shaped connecting rod is hinged with one end of a lateral pipe, the lower end of the short pipe is hinged with a short pipe of the other X-shaped connecting rod, the hinged part of the two is riveted with a lateral connecting seat, the upper end of a long pipe is hinged with one end of a lateral pipe in the middle, and the lower end of the long pipe is riveted with a lower fixing seat; the other end of the lateral transverse tube is riveted with the upper fixing seat.

Further, the Y-shaped folding assembly comprises two upper transverse pipes, an upper connecting piece, two upper connecting pipes, a vertical pipe, a lower connecting piece and two lower connecting pipes, wherein the upper connecting piece and the lower connecting piece are respectively and fixedly arranged at two ends of the vertical pipe; one end of the two upper connecting pipes is symmetrically riveted at two sides of the upper connecting piece, the other end of the two upper connecting pipes is respectively hinged with one end of the two upper transverse pipes, and the other ends of the two upper transverse pipes are respectively riveted with an upper fixing seat; one end of the two lower connecting pipes is symmetrically riveted on two sides of the lower connecting piece, and the other end is riveted with the lower fixing seat. Two upper connecting pipes, upper connecting pieces, vertical pipes and lower connecting pieces form a Y-shaped foldable structure, and four pipes of the upper transverse pipe and the lower connecting pipes are connected with the upper fixing seat or the lower fixing seat to form a whole, so that the front wall or the two sides of the rear wall can be folded towards the center direction.

Furthermore, the Y-shaped folding assembly further comprises a group of meshed gears, one side of each gear is provided with a plurality of sawteeth arranged on the cambered surface, the other side of each gear is provided with a fixing part embedded into the lower transverse tube, the lower transverse tube and the gears are embedded into grooves of the lower connecting piece, and the lower transverse tube, the fixing parts and the lower connecting piece are riveted.

Further, the lower connection pipe is longer than the upper connection pipe.

Furthermore, in the underframe, an upward concave mounting groove is formed at the joint of the central connecting seat and the telescopic pipe or the supporting pipe, and the telescopic pipe or the supporting pipe which is embedded into the mounting groove and riveted can be turned downwards relative to the mounting groove.

Further, the side connecting seat adopts an L-shaped connecting seat, the longitudinal section of the L-shaped connecting seat is hinged with the hinged parts of the lower ends of the two short pipes, the upper surface of the transverse section of the L-shaped connecting seat is provided with a downward groove, and the other end of the telescopic pipe is embedded into the groove and riveted.

Further, the novel handle assembly comprises a handle, an upper pull tube, a handle connecting seat, an adjusting assembly, two handle bases and two symmetrical pull down tubes, wherein one end of each pull down tube is riveted with the lower side of the handle connecting seat, the other end of each pull down tube is respectively riveted with one handle base, and each handle base is riveted with one lower fixing seat; the handle is arranged at the upper end of the pull-up pipe, and the lower end of the pull-up pipe is movably connected with the handle connecting seat through the adjusting component.

Furthermore, the handle assembly further comprises two groups of washers and springs, wherein the springs are arranged in grooves of the washers, and the rivets penetrate through the lower fixing seat, the washers, the springs and the handle base to rivet.

Further, the adjusting component comprises a button, a push rod, a pipe plug with a sliding groove and a fixing pin with a slope at the lower end, the pipe plug is embedded into the lower end of the upper pulling pipe, the slope is arranged in the sliding groove, and the fixing pin sequentially penetrates out of a notch at the lower end of the upper pulling pipe and a pin hole on the handle connecting seat; the button on the handle is fixed with one end of the ejector rod in the pull-up pipe, and the other end of the ejector rod is in contact with the slope.

Further, the lateral transverse pipes are hinged with the short pipes, the long pipes are hinged with the middle transverse pipes, and the two short pipes are hinged with each other through pipe connecting pieces; the pipe connecting piece comprises two symmetrical hinging pieces, wherein each hinging piece comprises a riveting part and an inserting part, the two riveting parts are riveted through rivets, and the inserting part is inserted into the lateral transverse pipe or the short cross pipe and is fixed by a fastener.

By adopting the technical scheme of the utility model, the beneficial effects of the utility model are as follows: the Y-shaped folding assemblies of the front wall and the rear wall and the foldable side walls and the foldable underframe can be gathered and stored, so that the high gathering of the stored volume is realized, and the volume is smaller; the two lower transverse pipes in the Y-shaped folding assembly are linked through gears in the lower connecting piece, so that stability and synchronism during folding and stretching are improved; the underframe is connected with the front wall and the rear wall through symmetrical telescopic pipes, so that the supporting connection with the side wall is enhanced, and the supporting strength of the whole underframe is enhanced; the handle is telescopic by adopting the button, so that the length of the handle can be conveniently adjusted, and the handle is convenient and quick to use; the gasket and the spring are additionally arranged at the connecting part with the front wall, and the impact force of the handle assembly in the use process of the trolley is damped by the spring, so that the shock resistance and the dynamic stability are enhanced.

Drawings

FIG. 1 is a perspective view of a gathering type folding cart in an unfolded state at an angle;

FIG. 2 is a perspective view of a gathering type folding cart in an expanded state at another angle;

FIG. 3 is a side view of a gathering type folding cart;

FIG. 4 is a perspective view of a gathering type folding cart in a folded position at an angle;

FIG. 5 is a perspective view of a gathering type folding cart in a folded condition at another angle;

FIG. 6 is a perspective view of a collapsed folding cart in a disassembled state;

FIG. 7 is a split state diagram of the Y-fold assembly;

FIG. 8 is a disassembled view of the pull handle assembly;

fig. 9 is a perspective view of the chassis.

In the figure: the front wall, 11 risers, 12 upper mounts, 13 lower mounts, 2 rear wall, 3 side walls, 31 long tubes, 32 short tubes, 33 side cross tubes, 34 tube connectors, 341 rivets, 342 connectors, 35 middle cross tubes, 4 underframe, 41 center mounts, 42 telescoping tubes, 43 side mounts, 44 support tubes, 5 rollers, 51 roller brackets, 52 axles, 6 handle assemblies, 61 handles, 62 pull-up tubes, 62a notches, 63 handle mounts, 63a pinholes, 64 handle mounts, 65 pull-down tubes, 66 buttons, 67 push rods, 68 fixed pins, 68a ramps, 69 washers, 610 springs, 611 tube plugs, 611a sliding grooves, 612 small springs, 7Y fold assemblies, 71 upper cross tubes, 72 upper connecting tubes, 73 upper connectors, 74 risers, 75 lower connectors, 75a grooves, 76 gears, 76a serrations, 76b fixtures, 77 lower connecting tubes.

Detailed Description

The specific embodiments of the specific scheme of the utility model are further described with reference to the accompanying drawings, so that the technical scheme is clearer and more obvious.

As shown in fig. 1-9, the present embodiment relates to a cross folding cart, which comprises a frame, wherein the frame comprises a front wall 1, a rear wall 2, a frame body formed by two symmetrical side walls 3, a bottom frame 4 at the bottom of the frame body, and four rollers 5 respectively arranged at two sides of the front wall 1 and two sides of the rear wall 2. The front wall 1, the rear wall 2, the side wall 3 and the underframe 4 can be respectively folded and gathered, so that the whole volume of the product is effectively reduced when the product is not used.

Specifically, the front wall 1 shown includes two risers 11, a Y-shaped folding assembly 7, two upper fixing seats 12, and two lower fixing seats 13, the upper and lower ends of each riser 11 are respectively provided with the upper fixing seats 12 and the lower fixing seats 13, the upper and lower ends of any side of the folding assembly 13 are respectively riveted with the upper fixing seats 12 and the lower fixing seats 13, the upper and lower ends of the front side or the rear side of the side wall 3 are respectively riveted with the upper fixing seats 12 and the lower fixing seats 13, and the roller 5 is mounted at the bottom of the riser 12; the rear wall 2 is identical in structure to the front wall 1.

The Y-shaped folding assembly 7 shown in this embodiment includes two upper transverse pipes 71, two symmetrical upper connecting pipes 72, an upper connecting piece 73, a vertical pipe 74, a lower connecting piece 75 and two lower connecting pipes 77, wherein two ends of the upper connecting piece 73 are respectively riveted with one ends of the two upper connecting pipes 72, the other ends of the two upper connecting pipes 72 are hinged with one ends of the two upper transverse pipes 71, the other ends of the two upper transverse pipes 71 are respectively riveted with the two upper fixing seats 12, the upper connecting piece 73 and the lower connecting piece 74 are respectively fixedly installed at two ends of the vertical pipe 74, the lower connecting piece 75 is riveted with one ends of the symmetrical two lower connecting pipes 77, and the other ends of the two lower connecting pipes 77 are riveted with the lower fixing seats 13.

The upper transverse tube 71 is hinged to the short tube 76 through a tube connecting piece 34, the tube connecting piece 34 adopts two symmetrical structures, one end of the tube connecting piece is inserted into the upper transverse tube 71 or the upper connecting tube 72, and the other end of the tube connecting piece enables the two symmetrical structures to be rotatably connected through a pin.

In a preferred embodiment, the i-shaped connecting rod assembly 7 further comprises a set of meshed gears 76, one side of the gears 76 is provided with a plurality of saw teeth 76a arranged on the cambered surface, the other side is provided with a fixing part 76b embedded into the lower transverse tube 72, the lower transverse tube 72 and the gears are embedded into a groove 75a of the lower connecting piece 75, and the lower transverse tube 72, the fixing part 76b and the lower connecting piece 75 are riveted. The meshed gears 76 are arranged at the riveting positions of the two lower transverse pipes 72 and the lower connecting piece 75, so that stability and synchronism during folding and stretching are improved.

The side wall 3 comprises two X-shaped connecting rods formed by cross riveting a long tube 31 and a short tube 32, a group of side transverse tubes 33 and a middle transverse tube 35, the two X-shaped connecting rods are symmetrically arranged, the upper end of the short tube 32 of one X-shaped connecting rod is hinged with one end of the side transverse tube 33, the lower end of the short tube 32 is hinged with the short tube of the other X-shaped connecting rod, the hinged part of the two is riveted with a side connecting seat 43, the upper end of the long tube 31 is hinged with one end of the middle transverse tube 35, and the lower end of the long tube 31 is riveted with a lower fixing seat 13; the other end of the lateral transverse tube 33 is riveted with the upper fixing seat 12. The lateral transverse tube 33 and the long tube 32, the long tube 32 and the short cross tube 33 and the two long tubes 32 are all hinged through tube connectors 77.

The long tube 31 and the short tube 32 have different lengths, specifically, the length of the long tube 31 is longer than the length of the short tube 32.

In a preferred embodiment, the hinges between the lateral tube 33 and the short tube 32, between the long tube 31 and the short cross tube 33, between the two short tubes 32 are connected by tube connections 34; the pipe connection 34 comprises two symmetrical hinge members, which include a rivet portion 341 and an insertion portion 342, the two rivet portions 341 are riveted by rivets, and the insertion portion 342 is inserted into a lateral cross pipe or a short cross pipe and fixed by fasteners (e.g., screws, etc.).

The shown underframe 4 comprises a central connecting seat 41, two telescopic pipes 42, two side connecting seats 43 and four supporting pipes 44, four corners of the central connecting seat 41, in particular, the lower surfaces of the four corners are provided with grooves upwards, each groove is respectively riveted with one end of one supporting pipe 44, the supporting pipe 44 can rotate downwards relative to the groove, and the other end of the supporting pipe 44 is riveted with one lower fixing seat 14; the side grooves on the left and right sides of the center connecting seat 41 are respectively riveted with one end of one telescopic tube 42, the same telescopic tube 42 rotates downwards relative to the side groove, the other end of the telescopic tube 42 is riveted with one end of one side connecting seat 43, and the other end of the side connecting seat 43 is riveted with a tube connecting piece 77 on the side wall 3 for connecting the two short tubes 32. The support tube 44 and the telescopic tube 42 rotate downwards relative to the central connecting seat 41 to realize folding and gathering of the underframe, and the position of the central connecting seat 41 after folding is higher than the positions of the support tube 44 and the telescopic tube 42.

In a preferred embodiment, the side connecting seat 43 is an L-shaped connecting seat, the longitudinal section of the L-shaped connecting seat is hinged with the hinged parts of the lower ends of the two short pipes 32, the upper surface of the transverse section of the L-shaped connecting seat is downwards grooved, and the other end of the telescopic pipe is embedded in the groove and riveted.

The upper fixing seat 12 in this embodiment adopts an L-shaped structure, two ends of the L-shaped structure are respectively riveted with the folding assemblies 7 of the side wall 3, the front wall 1 or the rear wall 2, and the middle part is fixed on the vertical pipe 12. The lower fixing seat 13 is provided with a plurality of connecting ports which are respectively riveted with a lower transverse tube of the front wall, a supporting tube of the underframe and a long tube of the side wall.

In order to facilitate the moving and pushing, a handle assembly 6 is arranged on the front wall 1, the handle assembly 6 comprises a handle 61, an upper pull tube 62, a handle connecting seat 63, two handle bases 64 and two symmetrical lower pull tubes 65, one end of each lower pull tube 64 is riveted with the lower side of the corresponding handle connecting seat 63, the other end of each lower pull tube 64 is respectively riveted with one handle base 64, and each handle base 64 is riveted with the front side of one lower fixing seat 14; the handle 61 is disposed at the upper end of the pull-up tube 62, and the lower end of the pull-up tube 62 is movably connected with the handle connecting seat 64 through an adjusting component after passing through the through hole of the handle connecting seat 64.

As shown in fig. 8, a specific composition of the adjusting assembly is: the pipe plug 611 is embedded into the lower end of the pull-up pipe 62, the slope 68a is arranged in the sliding groove 611a, and the fixing pin 68 sequentially penetrates through a notch 62a at the lower end of the pull-up pipe 62 and a pin hole 63a on the handle connecting seat 63; the push button 66 provided on the handle 61 is fixed to one end of the push rod 67 provided in the pull-up tube 62, and the other end of the push rod 67 is in contact with the slope 68 a. When in use, the fixing pin 68 sequentially penetrates through the notch 62a at the lower end of the pull-up tube 62 and the pin hole 63a on the handle connecting seat 63, the whole pull-up tube 62 is positioned at the upper end of the handle connecting seat 63, and the handle assembly 6 is in an unfolded use state; when the frame is folded and gathered, the push button 66 on the handle 61 is pressed in the lower end direction of the upward pulling tube 62, the push button 66 is pressed down to drive the ejector rod 67 to push the slope 68a, the slope 68a descends in the sliding groove 611a, the fixing pin 68 on the upper end of the slope 68a is driven to be separated from the pin hole 63a on the handle connecting seat 63, the limiting locking relation between the upward pulling tube 62 and the handle connecting seat 63 is released, the upward pulling tube 62 is pushed downwards, and the upward pulling tube 62 passes through the handle connecting seat 63, so that the upward pulling tube 62 moves to the downward pulling tube 65, and finally the storage state shown in fig. 4 is completed.

In a specific embodiment, a small spring 612 is provided on the bottom surface of the slope 68a, when the pull-up tube 62 and the handle connecting seat 63 are adjusted from the folded state in which they are freely movable to the unfolded state for use, the pull-up tube 62 is pulled up until the lower end enters the handle connecting seat 63, and the fixing pin 68 at the upper end of the slope 68a is pushed out into the pin hole 63a of the handle connecting seat by using the elastic return action of the spring, so that the limit fixation of the lower end of the pull-up tube 62 and the handle connecting seat 63 is realized.

The handle assembly 6 further comprises two sets of washers 69 and springs 610, wherein the springs 610 are arranged in grooves of the washers 69, and rivets penetrate through the lower fixing seat 14, the washers 69, the springs 610 and the handle base 64 to rivet. The shock resistance and dynamic stability are enhanced by combining the gasket (made of elastic materials such as rubber gasket) with the impact force received by the spring damping buffer handle assembly in the use process of the trolley.

When the folding bicycle frame is assembled, the whole front wall 1 or the whole rear wall 2 is assembled, then the rear wall 2 (specifically, the upper fixing seat 12 and the lower fixing seat 13) of the front wall 1 is assembled with the two side walls 3, the underframe 4 and the handle assembly 6 completely, the idler wheel 5 is detachably arranged at the bottom of the vertical pipe 12, the idler wheel bracket 51 is arranged on the idler wheel 5, and the wheel shaft 52 at the upper end of the idler wheel bracket is embedded into the bottom of the vertical pipe 12 and is fixed through a fastener (such as a screw or the like).

Note that the above is only a preferred embodiment of the present utility model and the technical principle applied. It will be understood by those skilled in the art that the present utility model is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the utility model. Therefore, while the utility model has been described in connection with the above embodiments, the utility model is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the utility model, which is set forth in the following claims.

Claims (10)

1. The utility model provides a gather-type folding handcart, includes the frame, the frame includes the framework that front wall, back wall, two symmetrical lateral walls are constituteed, the chassis of framework bottom and locates the front wall both sides, four gyro wheels of back wall both sides respectively, its characterized in that, the front wall includes two risers, two upper fixing bases, two lower fixing bases and a Y type folding subassembly, and the upper and lower both ends of every riser are equipped with upper fixing base, lower fixing base correspondingly, the gyro wheel is installed in the riser bottom; the upper and lower ends of either left or right side of the Y-shaped folding component are respectively riveted with the upper fixing seat and the lower fixing seat; the rear wall and the front wall have the same structure;

the chassis comprises a central connecting seat, two telescopic pipes, two side connecting seats and four supporting pipes, four corners of the central connecting seat are respectively riveted with one end of one supporting pipe, the other end of the supporting pipe is riveted with a lower fixing seat, the left side and the right side of the central connecting seat are respectively riveted with one end of one telescopic pipe, and the other end of the telescopic pipe is riveted with the side connecting seat;

the side wall comprises two lateral transverse pipes, two X-shaped connecting rods formed by cross riveting a long pipe and a short pipe and a middle lateral pipe; the two X-shaped connecting rods are symmetrically arranged, the upper end of a short pipe of one X-shaped connecting rod is hinged with one end of a lateral pipe, the lower end of the short pipe is hinged with a short pipe of the other X-shaped connecting rod, the hinged part of the two is riveted with a lateral connecting seat, the upper end of a long pipe is hinged with one end of a lateral pipe in the middle, and the lower end of the long pipe is riveted with a lower fixing seat; the other end of the lateral transverse tube is riveted with the upper fixing seat.

2. The gathering type folding cart as recited in claim 1 wherein the Y-shaped folding assembly comprises two upper cross tubes, an upper connector, two upper connecting tubes, a vertical tube, a lower connector and two lower connecting tubes, wherein the upper connector and the lower connector are respectively fixedly mounted at two ends of the vertical tube;

one end of the two upper connecting pipes is symmetrically riveted at two sides of the upper connecting piece, the other end of the two upper connecting pipes is respectively hinged with one end of the two upper transverse pipes, and the other ends of the two upper transverse pipes are respectively riveted with an upper fixing seat;

one end of the two lower connecting pipes is symmetrically riveted on two sides of the lower connecting piece, and the other end is riveted with the lower fixing seat.

3. The gathering type folding cart as recited in claim 2 wherein the Y-shaped folding assembly further comprises a set of meshing gears, wherein one side of the gears is provided with a plurality of saw teeth on the cambered surface, the other side is provided with a fixing portion embedded into the lower cross tube, the lower cross tube and the gears are embedded into the grooves of the lower connecting piece, and the lower cross tube, the fixing portion and the lower connecting piece are riveted.

4. A gathering type folding cart as recited in claim 2 wherein the lower connecting tube is longer than the upper connecting tube.

5. The gathering type folding cart as recited in claim 1 wherein the chassis has an upwardly recessed mounting slot at the connection of the central connecting base to the telescoping tube or support tube, and the telescoping tube or support tube is inserted into the mounting slot and riveted to be able to be flipped down relative to the mounting slot.

6. The gathering type folding cart as recited in claim 1 wherein the side connecting base is an L-shaped connecting base, a longitudinal section of the L-shaped connecting base is hinged to a portion where lower ends of the two short tubes are hinged, an upper surface of a transverse section of the L-shaped connecting base is provided with a downward groove, and the other end of the telescopic tube is embedded into the groove and riveted.

7. The gathering type folding cart as recited in claim 1 further comprising a handle assembly disposed on the front wall, the handle assembly comprising a handle, an upper pull tube, a handle connecting seat, an adjusting assembly, two handle bases and two symmetrical lower pull tubes, one end of each lower pull tube being riveted to the underside of the handle connecting seat, the other end of each lower pull tube being respectively riveted to one handle base, each handle base being riveted to one lower fixing seat; the handle is arranged at the upper end of the pull-up pipe, and the lower end of the pull-up pipe is movably connected with the handle connecting seat through the adjusting component.

8. The gathering type folding cart as recited in claim 7 wherein the handle assembly further comprises two sets of washers and springs, the springs being disposed in recesses in the washers, the rivets being riveted through the lower anchor, washers, springs, handle base.

9. The gathering type folding cart as recited in claim 7 wherein the adjusting assembly comprises a button, a push rod, a plug with a sliding groove and a fixing pin with a slope at the lower end, wherein the plug is embedded into the lower end of the upper pulling pipe, the slope is arranged in the sliding groove, and the fixing pin sequentially penetrates through a notch at the lower end of the upper pulling pipe and a pin hole on the handle connecting seat; the button on the handle is fixed with one end of the ejector rod in the pull-up pipe, and the other end of the ejector rod is in contact with the slope.

10. The gathering type folding cart as recited in claim 1 wherein the side cross tube is hinged to the short tube, the long tube is hinged to the middle cross tube, and the two short tubes are hinged to each other through tube connectors;

the pipe connecting piece comprises two symmetrical hinging pieces, wherein each hinging piece comprises a riveting part and an inserting part, the two riveting parts are riveted through rivets, and the inserting part is inserted into the lateral transverse pipe or the short cross pipe and is fixed by a fastener.

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