CN219668232U - Building site shallow - Google Patents

Abstract

The utility model relates to a construction site trolley, comprising: the trolley comprises a wheel frame with wheels, and a lever supported on the wheel frame, wherein one end of the lever forms a hand pushing end. The material clamp comprises a traction assembly and two grapples which can be opened and closed relatively, the upper end of the traction assembly is connected to the other end of the lever, and the lower end of the traction assembly is connected with the two grapples. When the hand pushing end is pressed down, the traction component can draw the two grapples to be closed. When the hand pushing end has no downward pressure, the traction assembly can drive the two grapples to open. The trolley has the advantages that the trolley can automatically clamp and discharge materials, does not need to frequently hang the materials on and take off the levers manually, is convenient to operate, saves time and labor, and can avoid safety accidents caused by falling of the materials.

Description

Building site shallow

Technical Field

The utility model relates to the technical field of construction sites, in particular to a construction site trolley.

Background

In engineering construction sites, building materials such as reinforcing steel bars, cement blocks, stones, bag-shaped materials and the like need to be frequently carried, the manual carrying labor intensity is high, time and labor are wasted, and potential safety hazards exist. Thus, it is currently common to transport building materials by carts. The existing trolley is commonly provided with hooks for hooking building materials for carrying. However, the cart still needs to be manually hung on a hook when in use, and the building materials are taken down after being carried. Because building materials need frequently to be carried on the construction site, the building materials are frequently hung on the hooks and taken down from the hooks manually, the operation is complicated, and potential safety hazards such as falling of the building materials exist in the use process.

Disclosure of Invention

First, the technical problem to be solved

In view of the above-mentioned shortcoming and deficiency of the prior art, the utility model provides a construction site trolley, which solves the technical problems that the existing trolley is generally provided with hooks for hooking building materials for carrying, the building materials are frequently hung on the hooks and taken off from the hooks manually, the operation is complicated, and potential safety hazards such as falling of the building materials exist in the use process.

(II) technical scheme

In order to achieve the above purpose, the main technical scheme adopted by the utility model comprises the following steps:

the embodiment of the utility model provides a construction site trolley, which comprises the following components:

the trolley comprises a wheel frame with wheels and a lever supported on the wheel frame, wherein one end of the lever forms a hand pushing end;

the material clamp comprises a traction assembly and two grapples which can be opened and closed relatively, the upper end of the traction assembly is connected with the other end of the lever, and the lower end of the traction assembly is connected with the two grapples;

when the hand pushing end is pressed down, the traction assembly can draw the two grapples to be closed;

when the pushing end has no downward pressure, the traction assembly can drive the two grapples to open.

According to the utility model, the two material clamps, namely a first material clamp and a second material clamp, are included, and can be detachably connected to the other end of the lever;

the first grapple of the first material clamp is used for clamping bag-shaped materials and cylindrical materials;

the second grapple of the second material clamp is used for clamping the block-shaped material.

According to the utility model, the first traction component of the first material clamp comprises two first connecting plates, a second connecting plate, a rope body and two first springs;

the two first connecting plates are horizontally arranged, opposite ends of the two first connecting plates are correspondingly and fixedly connected with two first grapples of the first material clamp, and the two first connecting plates can be rotatably connected with the second connecting plates relative to the second connecting plates;

the rope body penetrates through the second connecting plates and is connected with the similar ends of the two first connecting plates, and the upper end of the rope body is optionally hung at the other end of the lever;

the first springs are connected between the second connecting plate and the two first grapples;

when the hand pushing end is pressed downwards, the rope drives the similar ends of the two first connecting plates to move upwards so as to drive the two first grapples to be closed;

when the pushing end does not have downward pressure, the first springs drive the two first grapples to open.

According to the utility model, the first grapple is a bent plate body.

According to the utility model, the second pulling assembly of the second material holder comprises:

the two clamping plate arms are arranged in a crossing way, the upper parts of the two clamping plate arms are detachably connected to the other end of the lever, the middle parts of the two clamping plate arms are rotationally connected, the lower parts of the two clamping plate arms are correspondingly connected with the two second grapples of the second material clamp, and the middle parts of the two clamping plate arms are correspondingly connected with the two second grapples through a second spring;

when the hand pushing end is pressed downwards, the two clamping plate arms drive the two second grapples to be closed;

when the pushing end does not have downward pressure, the two clamping plate arms drive the two second grapples to open.

According to the utility model, the second traction assembly further comprises a first lifting ring, the first lifting ring is connected with the upper parts of the two clamping plate arms, the upper parts of the two clamping plate arms can rotate relative to the first lifting ring, and the two clamping plate arms are optionally hung at the other end of the lever through the first lifting ring;

when the hand pushing end is subjected to downward pressure, the first lifting ring moves upwards, and the first lifting ring can drive the two clamping plate arms and the two second grapples to be closed;

when the pushing end does not have downward pressure, the two second springs can drive the two second grapples and the two clamping plate arms to open.

According to the utility model, the middle part of each clamping plate arm is horizontally provided with a plurality of through holes at intervals, and the through holes on two clamping plate arms can correspond to each other and can be penetrated by a pin shaft.

According to the utility model, the novel lifting hook further comprises a unhooking hook, wherein the unhooking hook comprises a second lifting ring and a hook body, the second lifting ring can be optionally hung on the other end of the lever, the second lifting ring is rotatably connected with the hook body, a first end of the hook body is provided with a hook head, the weight of the hook head is smaller than that of a second end of the hook body, and the hook head is used for hanging bundle-shaped materials;

when the hand pushing end is pressed downwards, the hook head bears the gravity of the bundled materials to move downwards;

when the hand pushing end has no downward pressure, the hook head does not bear the gravity of the bundled materials and moves upwards.

According to the utility model, the unhooking also comprises two unhooking plate bodies;

the two unhooking plate bodies are oppositely arranged and fixedly connected, the two unhooking plate bodies are fixedly connected with the second hanging ring, the lower parts of the two unhooking plate bodies are rotationally connected with the hook bodies, bolts are arranged on the upper parts of the two unhooking plate bodies in a penetrating manner, and the bolts are horizontally arranged;

the hook body is rotatable until a second end of the hook body abuts the bolt.

According to the utility model, the wheel carrier is detachably connected with the lever;

the other end of the lever is provided with a hook which is used for connecting the traction assembly.

(III) beneficial effects

The beneficial effects of the utility model are as follows: according to the trolley for the construction site, when the hand pushing end is pressed downwards, the other end of the lever moves upwards and drives the traction assembly to move upwards, the traction assembly can draw the two grapples to be closed, and the two hooks clamp materials. When the pushing end does not have downward pressure, the other end of the lever moves downwards and drives the traction assembly to move downwards, and the traction assembly can drive the two grapples to open, so that automatic discharging of materials is realized. Therefore, the trolley for the construction site can realize automatic clamping and discharging of materials, does not need to frequently hang the materials on and take the materials off the lever manually, is convenient to operate, saves time and labor, and can avoid safety accidents caused by falling of the materials.

Drawings

FIG. 1 is a front view of a worksite cart of the present utility model;

FIG. 2 is a partial schematic view of FIG. 1;

FIG. 3 is a left side view of FIG. 1 (showing the hook and the material clamp);

FIG. 4 is a schematic view of a first material holder;

FIG. 5 is a partial perspective view of FIG. 4;

FIG. 6 is a perspective view of the first grapple;

FIG. 7 is a schematic view of a second material holder;

FIG. 8 is a schematic view of unhooking;

fig. 9 is a left side view of fig. 8.

[ reference numerals description ]

1: a cart; 111: a lever; 112: a push rod; 12: a hook; 121: a hook main body; 122: a rotating lever; 123: a third spring; 13: a wheel; 14: a wheel carrier; 141: a vertical rod body; 142: a tilting support rod; 143: a rotating shaft;

2: a first material holder; 21: a first traction assembly; 211: a first connection plate; 212: a second connecting plate; 213: a rope body; 214: a ring body; 215: a first spring; 22: a first grapple; 23: reinforcing steel bars;

3: a second material holder; 31: a second traction assembly; 311: a clamp arm; 3111: a through hole; 312: a second spring; 313: a first hanging ring; 32: a second grapple;

4: unhooking; 41: the second hanging ring; 42: a hook body; 421: a hook head; 43: a unhooking plate body; 44: and (5) a bolt.

Detailed Description

The utility model will be better explained by the following detailed description of the embodiments with reference to the drawings. Wherein references herein to "upper", "lower", etc. are made to the orientation of fig. 1.

Referring to fig. 1-9, the present utility model provides a worksite cart comprising a cart 1 and a material clamp.

The trolley 1 comprises a wheel frame 14 with wheels 13 and a lever 111 supported on the wheel frame 14, one end of the lever 111 constituting the push end. The material clamp comprises a traction component and two grapples which can be opened and closed relatively, the upper end of the traction component is connected with the other end of the lever 111, and the lower end of the traction component is connected with the two grapples. When the hand pushing end is pressed down, the other end of the lever 111 moves upwards and drives the traction assembly to move upwards, the traction assembly can draw the two grapples to be closed, and the two hooks clamp materials. When the pushing end does not have downward pressure, the other end of the lever 111 moves downwards and drives the traction assembly to move downwards, and the traction assembly can drive the two grapples to open, so that automatic discharging of materials is realized. Therefore, the construction site trolley can realize automatic clamping and discharging of materials, does not need to frequently hang building materials on the lever 111 and take off the building materials from the lever 111 by manpower, is convenient to operate, saves time and labor, and can avoid safety accidents caused by falling of the materials.

Further, the wheel frame 14 is detachably connected to the lever 111.

The length of the lever 111 and the setting position of the wheel frame 14 with respect to the lever 111 are adjustable. Changing the length of the lever 111 changes the length of the power arm. The setting position of the wheel frame 14 with respect to the lever 111 is changed, i.e., the length of the resistance arm of the wheel frame 14 to the other end of the lever 111 is changed. The ratio of the resistance arm to the power arm is adjusted, so that the driving force required by a worker to push the cart 1 can be reduced to the greatest extent when materials with different weights are conveyed, and the labor intensity is reduced. Meanwhile, the length of the lever 111 is increased, so that the device can be suitable for conveying long-length materials such as steel, the distance between workers and the materials can be increased, and the phenomenon that the workers collide with the materials after the materials collide with obstacles in the conveying process and then shift is avoided

Further, the wheel frame 14 includes a vertical rod body 141, an inclined support rod 142, and a rotation shaft 143.

The upper end of the vertical rod body 141 is fixedly connected with the lever 111, the lower end of the vertical rod body 141 is fixedly connected with the rotating shaft 143, and the wheels 13 are rotatably arranged at the two ends of the rotating shaft 143. The lever 111 rotates with the wheel carrier 14 about the axis of the rotary shaft 143. The inclined support bars 142 are provided between the vertical rod body 141 and the lever 111 and between the vertical rod body 141 and the rotation shaft 143 to improve the use strength of the wheel frame 14.

When a worker applies a pressing force to the push end of the lever 111, the lever 111 rotates with the wheel frame 14 about the axis of the rotation shaft 143 to drive the other end of the lever 111 to move upward.

When the worker releases the lever 111, the lever 111 rotates with the wheel frame 14 about the axis of the rotation shaft 143 to drive the other end of the lever 111 to move downward.

Further, the other end of the lever 111 is provided with a hook 12, the hook 12 being used for connecting different traction assemblies.

The hanger 12 includes a hanger main body 121, a rotating lever 122, and a third spring 123.

The hooking body 121 is provided at the other end of the lever 111. The hook body 121 has a notch, one end of the rotating rod 122 is rotatably connected to the hook body 121, and a third spring 123 is connected between the rotating rod 122 and the hook body 121.

When the hook 12 is connected with the traction component, the traction component applies pressure to the rotating rod 122 and drives the rotating rod 122 to open the notch of the hook main body 121, and the traction component can slide into the hook main body 121 to realize connection between the hook 12 and the traction component. The third spring 123 contracts when the rotating rod 122 rotates and opens the notch of the hook body 121, and when the traction assembly slides into the hook body 121, the third spring 123 rebounds and drives the rotating rod 122 to close the notch of the hook body 121. Thus, the hook 12 can be automatically closed for easy operation.

Further, the work site trolley of the present utility model comprises two types of material clamps, a first material clamp 2 and a second material clamp 3, respectively, both of which can be detachably connected to the hook 12 on the other end of the lever 111. For the sake of clarity, the grapple of the first material clamp 2 is referred to as first grapple 22, the pulling assembly of the first material clamp 2 is referred to as first pulling assembly 21, the grapple of the second material clamp 3 is referred to as second grapple 32, and the pulling assembly of the second material clamp 3 is referred to as second pulling assembly 31.

Wherein the first grapple 22 of the first material clamp 2 is used for clamping bag-like material and cylindrical material, such as cement bags and pipes. The second grapple 32 of the second material holder 3 is used for holding block-shaped materials, such as stones and bricks.

Specifically, the first traction assembly 21 of the first material holder 2 comprises two first connection plates 211, a second connection plate 212, a rope 213 and two first springs 215.

The two first connecting plates 211 are horizontally arranged, opposite ends of the two first connecting plates 211 are correspondingly fixedly connected with the two first grapples 22 of the first material clamp 2, and the two first connecting plates 211 can be rotatably connected with the second connecting plates 212 relative to the second connecting plates 212. The rope 213 passes through the second connection plate 212 and is connected with the near ends of the two first connection plates 211, and the upper end of the rope 213 is optionally hung on the hook 12 at the other end of the lever 111. A first spring 215 is connected between the second connecting plate 212 and both the first grapples 22.

When in use, the utility model is characterized in that: when the material is not clamped, the first springs 215 drive the two first grapples 22 to open.

When a worker pushes the cart 1 to the two first grapples 22 to be clamped and taken at two sides, downward pressure is applied to the hand pushing end of the lever 111, when the hand pushing end is subjected to the downward pressure, the other end of the lever 111 is driven to move upwards, and the other end of the lever 111 drives the similar ends of the two first connecting plates 211 to move upwards through the rope body 213 so as to drive the two first grapples 22 to be closed and clamp and take materials. At this time, the opposite ends of the two first connecting plates 211 move downward and drive the two first springs 215 to stretch.

When the worker pushes the cart 1 to drive the material to move to the discharging position, the worker releases the lever 111, the pushing end of the lever 111 has no downward pressure, the other end of the lever 111 is driven to move downward, at this time, the material contacts the ground or the working surface, the two first springs 215 rebound and drive the opposite ends of the two first connecting plates 211 to move upward so as to drive the two first grapples 22 to open and realize automatic discharging of the material, and the two first grapples 22 can automatically return to the open state.

Specifically, by selecting the first springs 215 with different tensions and lengths, the opening distance between the two first grapples 22 is correspondingly adjusted, so that the clamping device is suitable for clamping materials with different sizes, and the application range of material clamping is improved.

Preferably, the two first connection plates 211 and the second connection plates 212 are each provided with a through hole for penetrating the annular reinforcing bars, and the two first connection plates 211 are each rotatably connected to the second connection plates 212 through the annular reinforcing bars.

More specifically, the first material holder 2 further comprises a ring 214. The ring 214 is used to hang on the hook 12. The ring 214 is embodied as a hinge.

More specifically, the first grapples 22 are bent plate bodies so that two first grapples 22 hold the bottoms of the bag-like material and the cylindrical material.

Further, the second pulling assembly 31 of the second material holder 3 comprises two clamping arms 311.

The two clamping plate arms 311 are arranged in a crossed mode, the upper parts of the two clamping plate arms 311 are detachably connected to the other end of the lever 111, the middle parts of the two clamping plate arms 311 are connected in a rotating mode, the lower parts of the two clamping plate arms 311 are correspondingly connected with the two second grapples 32 of the second material clamp 3, and the middle parts of the two clamping plate arms 311 are correspondingly connected with the two second grapples 32 through the second springs 312.

When in use, the utility model is characterized in that: when the material is not clamped, the second springs 312 drive the two second grapples 32 to open.

When the worker pushes the cart 1 to the two second grapples 32 to be clamped and taken, the worker applies a downward force to the hand pushing end of the lever 111, when the hand pushing end is subjected to the downward force, the other end of the lever 111 is driven to move upwards, the other end of the lever 111 drives the two clamping plate arms 311 to move upwards and the lower parts of the two clamping plate arms 311311 are closed, and the two clamping plate arms 311311 drive the two second grapples 32 to be closed and clamp and take materials. At this time, the two second springs 312 connected between the middle portions of the two clamp arms 311 and the two second grapples 32 are stretched.

When the worker pushes the cart 1 to drive the material to move to the discharging position, the worker releases the lever 111, the pushing end of the lever 111 has no downward pressure, the other end of the lever 111 is driven to move downward, at this time, the material contacts the ground or the working surface, the two second springs 312 rebound and drive the two second grapples 32 to open, the automatic discharging of the material is realized, and the two second grapples 32 can automatically return to the open state.

Specifically, the opposite end surface of the second grapple 32 is herringbone to improve stability when gripping the material.

Specifically, the middle portions of the two clamp arms 311311 are each provided with a plurality of through holes 3111, and the through holes 3111 on the two clamp arms 311 can be in one-to-one correspondence and can be connected by a pin. The two clamping plate arms 311 are connected through the through holes 3111 at different positions through the pin shafts, so that the distance between the lower parts of the two clamping plate arms 311 can be correspondingly changed, namely the distance between the two second grapples 32 is changed, so that the clamping device is suitable for clamping materials with different widths, and the clamping application range of the materials is enlarged.

Specifically, the second traction assembly 31 further includes a first suspension ring 313.

The first hanging ring 313 is connected with the upper parts of the two clamping plate arms 311, the upper parts of the two clamping plate arms 311 can rotate relative to the first hanging ring 313, and the two clamping plate arms 311 are hung at the other end of the lever 111 through the first hanging ring 313.

When the pushing end is pressed down, the other end of the lever 111 drives the first hanging ring 313 to move upwards, the first hanging ring 313 can drive the two clamping plate arms 311 to open, the two clamping plate arms 311 drive the two second grapples 32 to open, and at the moment, the second springs 312 stretch.

When the pushing end has no downward pressure, the two second springs 312 rebound and drive the two second grapples 32 and the two clamp arms 311 to open.

More specifically, the second traction assembly 31 further comprises two third lifting rings 314.

The first hanging ring 313 is respectively rotatably connected to the upper parts of the two clamping plate arms 311 through two third hanging rings 314.

Further, the inventive work site trolley further comprises a unhooking 4.

The unhooking 4 comprises a second hanging ring 41 and a hook body 42, the second hanging ring 41 can be optionally hung on the hook 12 at the other end of the lever 111, the second hanging ring 41 is rotatably connected with the hook body 42, a first end of the hook body 42 is provided with a hook head 421, the weight of the hook head 421 is smaller than that of a second end of the hook body 42, and the hook head 421 is used for hanging bundle-shaped materials. The bundle-like material comprises bundles of steel or bundles of pipes.

In use, the baled material is first hung on the hook 42.

The worker applies a downward pressure to the hand pushing end of the lever 111, and when the hand pushing end receives the downward pressure, the other end of the lever 111 drives the unhooking 4 and the bundle-shaped materials to move upwards, and the hook head 421 of the unhooking 4 bears the gravity of the bundle-shaped materials to move downwards.

When the staff promotes shallow 1 and drives the material and remove to the unloading position, the staff loosens lever 111, and the hand push end of lever 111 does not have the downforce, and the gib head 421 does not bear the gravity of bundle form material, because the weight of gib head 421 is less than the weight of coupler body 42 second end, and coupler body 42 second end moves down and drives gib head 421 and move up in order to realize the automatic unloading of bundle form material, does not need artifical frequent unloading, and the operation of being convenient for, labour saving and time saving just can avoid the material to fall and take place the incident.

When in use, the utility model is characterized in that: when the material is not clamped, the second springs 312 drive the two second grapples 32 to open.

When the worker pushes the cart 1 to the two second grapples 32 to be clamped and taken at two sides, a downward pressure is applied to the hand pushing end of the lever 111, the other end of the lever 111 is driven to move upwards when the hand pushing end is subjected to the downward pressure, the other end of the lever 111 drives the two clamping plate arms 311 to move upwards and the lower parts of the two clamping plate arms 311311 are closed, and the two clamping plate arms 311311 drive the two first grapples 22 to be closed and clamp and take materials. At this time, the two second springs 312 connected between the middle portions of the two clamp arms 311 and the two second grapples 32 are stretched.

When the worker pushes the cart 1 to drive the material to move to the discharging position, the worker releases the lever 111, the pushing end of the lever 111 has no downward pressure, the other end of the lever 111 is driven to move downward, at this time, the material contacts the ground or the working surface, and the two second springs 312 rebound and drive the two second grapples 32 to open, so that automatic discharging of the material is realized.

Specifically, the unhooking 4 further includes two unhooking plates 43.

The two unhooking plate bodies 43 are oppositely arranged and fixedly connected, the two unhooking plate bodies 43 are fixedly connected with the second hanging ring 41, the lower parts of the two unhooking plate bodies 43 are rotatably connected with the hook body 42, the upper parts of the two unhooking plate bodies 43 are penetrated with bolts 44, and the bolts 44 are horizontally arranged. The hook body 42 can be rotated until the second end of the hook body 42 abuts against the bolt 44 to limit the rotation angle of the hook body 42.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed. Either mechanically or electrically. Can be directly connected or indirectly connected through an intermediate medium. May be a communication between two elements or an interaction between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature is "on" or "under" a second feature, which may be in direct contact with the first and second features, or in indirect contact with the first and second features via an intervening medium. Moreover, a first feature "above," "over" and "on" a second feature may be a first feature directly above or obliquely above the second feature, or simply indicate that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is level lower than the second feature.

In the description of the present specification, the terms "one embodiment," "some embodiments," "examples," "particular examples," or "some examples," etc., refer to particular features, structures, materials, or characteristics described in connection with the embodiment or example as being included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that alterations, modifications, substitutions and variations may be made in the above embodiments by those skilled in the art within the scope of the utility model.

Claims (10)

1. A worksite cart, comprising:

the trolley (1), the trolley (1) comprises a wheel frame (14) with wheels (13) and a lever (111) supported on the wheel frame (14), and one end of the lever (111) forms a hand pushing end;

the material clamp comprises a traction assembly and two grapples which can be opened and closed relatively, the upper end of the traction assembly is connected with the other end of the lever (111), and the lower end of the traction assembly is connected with the two grapples;

when the hand pushing end is pressed down, the traction assembly can draw the two grapples to be closed;

when the pushing end has no downward pressure, the traction assembly can drive the two grapples to open.

2. The worksite cart of claim 1, wherein the cart is configured to move,

the two material clamps, namely a first material clamp (2) and a second material clamp (3), can be detachably connected to the other end of the lever (111);

the first grapple (22) of the first material clamp (2) is used for clamping bag-shaped materials and cylindrical materials;

the second grapple (32) of the second material clamp (3) is used for clamping the blocky material.

3. The trolley according to claim 2, characterized in that the first traction assembly (21) of the first material clamp (2) comprises two first connection plates (211), a second connection plate (212), a rope (213) and two first springs (215);

the two first connecting plates (211) are horizontally arranged, opposite ends of the two first connecting plates (211) are correspondingly fixedly connected with two first grapples (22) of the first material clamp (2), and the two first connecting plates (211) can be rotatably connected with the second connecting plates (212) relative to the second connecting plates (212);

the rope body (213) passes through the second connecting plate (212) and is connected with the similar ends of the two first connecting plates (211), and the upper end of the rope body (213) is optionally hung at the other end of the lever (111);

the second connecting plate (212) and the two first grapples (22) are connected with the first springs (215);

when the hand pushing end is pressed downwards, the rope body (213) drives the close ends of the two first connecting plates (211) to move upwards so as to drive the two first grapples (22) to be closed;

when the pushing end has no downward pressure, the first springs (215) drive the two first grapples (22) to open.

4. A trolley according to claim 3, characterised in that the first grapple (22) is a bent plate.

5. A worksite trolley according to claim 2, characterized in that the second traction assembly (31) of the second material clamp (3) comprises:

the two clamping plate arms (311) are arranged in a crossing manner, the upper parts of the two clamping plate arms (311) are detachably connected to the other end of the lever (111), the middle parts of the two clamping plate arms (311) are rotationally connected, the lower parts of the two clamping plate arms (311) are correspondingly connected with the two second grappling hooks (32) of the second material clamp (3), and the middle parts of the two clamping plate arms (311) are correspondingly connected with the two second grappling hooks (32) through a second spring (312);

when the hand pushing end is pressed down, the two clamping plate arms (311) drive the two second grapples (32) to be closed;

when the pushing end has no downward pressure, the two clamping plate arms (311) drive the two second grapples (32) to open.

6. The trolley according to claim 5, characterized in that the second traction assembly (31) further comprises a first lifting ring (313), said first lifting ring (313) being connected to the upper parts of two said clamping arms (311), the upper parts of two said clamping arms (311) being rotatable relative to said first lifting ring (313), two clamping arms (311) being selectively suspended from the other end of said lever (111) by means of said first lifting ring (313);

when the hand pushing end is subjected to downward pressure, the first hanging ring (313) moves upwards, and the first hanging ring (313) can drive the two clamping plate arms (311) and the two second grapples (32) to be closed;

when the pushing end has no downward pressure, the two second springs (312) can drive the two second grapples (32) and the two clamping plate arms (311) to open.

7. The trolley according to claim 5, wherein a plurality of through holes (3111) are horizontally arranged at intervals in the middle of each clamping arm (311), and the through holes (3111) on two clamping arms (311) can correspond to each other and can be penetrated by a pin shaft.

8. The trolley according to claim 1 or 2, further comprising a unhooking (4), the unhooking (4) comprising a second lifting ring (41) and a hook body (42), the second lifting ring (41) being capable of being selectively suspended on the other end of the lever (111), the second lifting ring (41) being rotatably connected to the hook body (42), a first end of the hook body (42) being provided with a hook head (421), the weight of the hook head (421) being smaller than the weight of a second end of the hook body (42), the hook head (421) being adapted to suspend a bundle-like material;

when the hand pushing end is subjected to downward pressure, the hook head (421) bears the gravity of the bundled materials to move downwards;

when the pushing end has no downward pressure, the hook head (421) does not bear the gravity of the bundled materials and moves upwards.

9. The trolley according to claim 8, characterized in that the unhooking (4) further comprises two unhooking plates (43);

the two unhooking plate bodies (43) are oppositely arranged and fixedly connected, the two unhooking plate bodies (43) are fixedly connected with the second hanging ring (41), the lower parts of the two unhooking plate bodies (43) are rotatably connected with the hook bodies (42), bolts (44) are arranged at the upper parts of the two unhooking plate bodies (43) in a penetrating mode, and the bolts (44) are horizontally arranged;

the hook body (42) is rotatable until a second end of the hook body (42) abuts the bolt (44).

10. A trolley according to claim 1, characterised in that the wheel carrier is detachably connected to the lever (111);

the other end of the lever (111) is provided with a hook (12), and the hook (12) is used for connecting the traction assembly.