A foldable manual pallet truck

Abstract

The present invention provides a foldable manual pallet truck, belonging to the technical field of forklifts, comprising: a frame assembly; a lifting assembly, mounted on the frame assembly, and the lifting assembly includes a support; a handle assembly, comprising a pipe fitting, and the pipe fitting forms a rotational fit with the support, wherein a first constraint portion is further provided between one end of the pipe fitting that is rotationally connected to the support and the support, and the folding, storage, and unfolding and locking of the handle assembly are achieved through the separation and reorganization of the first constraint portion. The present invention forms a detachable and reorganizable first constraint portion between the pipe fitting of the handle assembly and the support of the lifting assembly, thereby achieving the folding of the handle assembly in the storage state and the unfolding and locking in the use state, which is simple to operate, and the forklift in the storage state is small in size.

Description

Technical Field

[0001] The invention belongs to the technical field of manual pallet trucks and relates to a foldable manual pallet truck. Background Art

[0002] Manual pallet trucks are an indispensable auxiliary equipment for material handling, and are mainly used for short-distance pallet material handling. However, conventional manual pallet trucks cannot be folded, and the large size of the vehicle during transportation increases transportation costs. Summary of the invention

[0003] The purpose of the present invention is to solve the above problems in the prior art and to provide a manual pallet truck with a folding function.

[0004] The object of the present invention can be achieved through the following technical solutions: A foldable manual pallet truck, comprising:

[0005] The frame assembly includes a fork leg, and a column connected to one end of the fork leg and integrally arranged with the fork leg, wherein the column extends in a direction away from the fork leg to form a support arm and a top plate, and the top plate and the support arm are arranged up and down along the lifting direction of the fork leg, and a support seat is connected to the support arm;

[0006] The lifting assembly includes a jack assembly installed on a support seat, the output end of the jack assembly is connected to the top plate, and the top plate is driven to move up and down by the jack assembly; the support seat is provided with a first rotating shaft, a second rotating shaft and a third rotating shaft, wherein the third rotating shaft forms a rotational fit with the jack assembly, and the second rotating shaft abuts against the input end of the jack assembly;

[0007] The handle assembly includes a pipe fitting, and the pipe fitting is rotationally matched with a support through a first rotating shaft, wherein a first constraint portion is also provided between one end of the pipe fitting rotationally connected to the support and the support, and the folding, storage and unfolding and locking of the handle assembly are achieved through the separation and reorganization of the first constraint portion.

[0008] In the above-mentioned foldable manual pallet truck, when the first constraint part is separated, a single constraint position is formed between the pipe fitting and the support, wherein the pipe fitting rotates around the support through the first rotating shaft; when the first constraint part is reassembled, two constraint positions are formed between the pipe fitting and the support, wherein the position between the pipe fitting and the support is relatively fixed, and the pipe fitting and the support rotate synchronously around the jack assembly through the third rotating shaft.

[0009] In the above-mentioned foldable manual pallet truck, when the first restraining part is separated, the pipe is rotated around the support through the first rotating shaft and can be rotated to contact the upper surface of the column, wherein the upper surface of the column is a side surface of the column away from the fork leg, and the handle assembly is supported in the lifting direction of the fork leg through the column.

[0010] In the above-mentioned foldable manual pallet truck, the first restraint part includes a first bracket installed on the support, and the first bracket is arranged in a U shape, wherein the opening direction of the first bracket is consistent with the lifting direction of the fork leg, and the opening end of the first bracket is provided with a first restraint hole; the pipe fitting is provided with a second restraint hole, wherein when the first restraint hole and the second restraint hole are arranged coaxially, the first restraint hole and the second restraint hole are synchronously inserted by a pin to achieve the fixation of the relative position between the pipe fitting and the support.

[0011] In the above-mentioned foldable manual pallet truck, a second constraint portion is formed between the end of the pipe member that is close to the support rotation connection and the column, wherein the locking of the handle assembly in the folded storage state and the rotation of the handle assembly around the support through the first rotating shaft in the unlocked state are achieved through the reorganization and separation of the second constraint portion.

[0012] In the above-mentioned foldable manual pallet truck, the second restraint part includes a second bracket installed on the column, and the second bracket is arranged in a U shape, wherein the opening direction of the second bracket is consistent with the opening direction of the first bracket, and the opening end of the second bracket is provided with a third restraint hole; a fourth restraint hole is provided on the pipe fitting, wherein, when the third restraint hole and the fourth restraint hole are arranged coaxially, the third restraint hole and the fourth restraint hole are synchronously inserted by a pin to achieve the fixation of the relative position between the pipe fitting and the column.

[0013] In the above-mentioned foldable manual pallet truck, the latch in the first constraint part is shared with the latch in the second constraint part, wherein when the latch is pulled out of the first constraint hole and the second constraint hole and inserted into the third constraint hole and the fourth constraint hole, the first constraint part is separated and the second constraint part is re-locked; when the latch is pulled out of the third constraint hole and the fourth constraint hole and inserted into the first constraint hole and the second constraint hole, the first constraint part is re-locked and the second constraint part is separated.

[0014] In the above-mentioned foldable manual pallet truck, the fork leg includes a first fork and a second fork formed by extending along the length direction of the first fork, and the first fork and the second fork are rotatably matched, wherein the first fork is provided with a first loading plane, and the second fork is provided with a second loading plane, and the angle formed between the first loading plane and the second loading plane is changed by the relative rotation between the first fork and the second fork, and the range of the angle is 0° to 90°.

[0015] In the above-mentioned foldable manual pallet truck, the first fork and the second fork are connected via a rotating structure, wherein the rotating structure includes a first rotating block and a second rotating block respectively connected to the first fork and the second fork, and a pin shaft for relative rotation of the first rotating block and the second rotating block, and a locking portion for fixing the relative position between the first rotating block and the second rotating block are provided between the first rotating block and the second rotating block.

[0016] In the above-mentioned foldable manual pallet truck, the locking part includes a pin, one end of which is threadedly engaged with the second rotating block and locked by a nut, and the other end is snap-engaged with a concave hole on the first rotating block, wherein the number of the concave holes is two, namely the first concave hole and the second concave hole, and when the pin is snap-engaged with the first concave hole, the first loading plane and the second loading plane are on the same horizontal plane; when the pin is snap-engaged with the second concave hole, the first loading plane and the second loading plane are perpendicular to each other.

[0017] In the above-mentioned foldable manual pallet truck, an elastic glass bead is arranged at one end of the pin that forms a snap fit with the concave hole, and the elastic glass bead can move along the axial direction of the pin.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] (1) The present invention provides a foldable manual pallet truck, which forms a detachable and reconfigurable first restraint portion between the pipe of the handle assembly and the support of the lifting assembly, so that the handle assembly can be folded in a stored state and unfolded and locked in a use state. The operation is simple, and the manual pallet truck in the stored state is small in size.

[0020] (2) By providing the second restraining portion, the handle assembly of the hand pallet truck in the folded storage state will not move up and down due to bumps during transportation, thereby avoiding collision between the handle assembly and the column, thereby improving the reliability of the hand pallet truck during transportation. In addition, the structures of the first restraining portion and the second restraining portion are basically the same, which makes it possible to share a latch structure, thereby facilitating the management of parts.

[0021] (3) The second fork is an extension of the first fork in the length direction, so that the hand pallet truck can carry goods that are longer in length. The second fork is rotatably connected to the first fork. On the one hand, it ensures that the storage volume of the hand pallet truck will not increase due to the increase in the length of the fork legs. On the other hand, when the hand pallet truck is carrying shorter goods, the second fork can be flipped to form a limit block in the length direction for the goods on the first fork, thereby improving the reliability of the goods during transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of a foldable manual pallet truck of the present invention.

[0023] Figure 2 yes Figure 1 Enlarged view of point A in the middle.

[0024] Figure 3 yes Figure 1A schematic structural diagram of the foldable manual pallet truck from another perspective is shown.

[0025] Figure 4 yes Figure 3 Enlarged view of point B in the middle.

[0026] Figure 5 yes Figure 1 The structural schematic diagram of the foldable manual pallet truck shown in the third perspective.

[0027] Figure 6 yes Figure 5 Enlarged view of point C in the middle.

[0028] In the figure, 100, frame assembly; 110, fork leg; 111, first fork; 112, second fork; 113, first loading plane; 114, second loading plane; 120, column; 130, support arm; 140, top plate; 150, support seat; 160, rotating structure; 161, first rotating block; 1611, first concave hole; 1612, second concave hole; 162, second rotating block; 1621, second shaft hole; 163, pin; 1631, first shaft hole; 164, locking part; 1641, pin; 1642, nut; 1643, elastic glass bead; 200 , walking assembly; 210, first walking wheel; 220, second walking wheel; 300, lifting assembly; 310, jack assembly; 311, valve core; 312, bracket; 320, support; 321, first rotating shaft; 322, second rotating shaft; 323, third rotating shaft; 400, handle assembly; 410, pipe fitting; 420, switch; 500, first restraint part; 510, first bracket; 520, first restraint hole; 530, second restraint hole; 540, latch; 600, second restraint part; 610, second bracket; 620, third restraint hole; 630, fourth restraint hole. DETAILED DESCRIPTION

[0029] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0030] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0031] like Figures 1 to 6 As shown, the present invention provides a foldable manual pallet truck, comprising:

[0032] The frame assembly 100 includes a fork leg 110, and a column 120 connected to one end of the fork leg 110 and integrally arranged with the fork leg 110, wherein the column 120 extends in a direction away from the fork leg 110 to form a support arm 130 and a top plate 140, and the top plate 140 and the support arm 130 are arranged up and down along the lifting direction of the fork leg 110, and a support seat 150 is connected to the support arm 130;

[0033] The walking assembly 200 includes a first walking wheel 210 connected to the support seat 150 and a second walking wheel 220 connected to the other end of the fork leg 110;

[0034] The lifting assembly 300 includes a jack assembly 310 mounted on the support seat 150, and the output end of the jack assembly 310 is connected to the top plate 140, and the top plate 140 is driven to move up and down by the jack assembly 310, wherein the input end of the jack assembly 310 is rotatably connected to the support 320;

[0035] The handle assembly 400 includes a tube 410, and the tube 410 is rotationally connected to the support 320, wherein a first constraint portion 500 is formed between one end of the tube 410 rotationally connected to the support 320 and the support 320, and the handle assembly 400 can be folded by separating the first constraint portion 500, and can be unfolded by reorganizing the first constraint portion 500.

[0036] The present invention provides a foldable manual pallet truck, which forms a detachable and reconfigurable first restraint portion 500 between the pipe 410 of the handle assembly 400 and the support 320 of the lifting assembly 300, so that the handle assembly 400 can be folded in a stored state and unfolded and locked in a use state. The operation is simple, and the manual pallet truck in the stored state has a small size.

[0037] It is worth mentioning that when the handle assembly 400 is unfolded, the first constraint portion 500 between the pipe 410 and the support 320, and the rotational cooperation between the pipe 410 and the support 320 form two constraint positions, thereby locking the relative position between the support 320 and the pipe 410. At this time, when the fork leg 110 of the manual pallet truck needs to be raised, the handle assembly 400 and the support 320 synchronously rotate around the jack assembly 310 to achieve the raising of the fork leg 110. When the fork leg 110 of the manual pallet truck needs to be lowered, the fork leg 110 can be lowered by pressing the switch 420 at the other end of the pipe 410 on the handle assembly 400. When the handle assembly 400 is folded, the first constraint portion 500 between the pipe 410 and the support 320 is separated, and only one constraint position between the pipe 410 and the support 320 that can rotate relative to each other remains.

[0038] Preferably, when the first constraint portion 500 is separated, a single constraint position is formed between the pipe fitting 410 and the support 320, which can rotate relative to each other, and the pipe fitting 410 can be rotated to contact the upper surface of the column 120, wherein the upper surface of the column 120 is a side surface of the column 120 away from the fork leg 110, and the column 120 forms a support for the handle assembly 400 in the lifting direction of the fork leg 110; when the first constraint portion 500 is reorganized and locked, two constraint positions are formed between the pipe fitting 410 and the support 320, fixing the relative position between the pipe fitting 410 and the support 320, and the pipe fitting 410 and the support 320 can rotate synchronously around the jack assembly 310.

[0039] Further preferably, a second constraint portion 600 is formed between the end of the tube 410 that is close to the support 320 and the column 120, wherein when the first constraint portion 500 is separated and the second constraint portion 600 is reassembled and locked, the handle assembly 400 is in a folded state and can be stored; when the second constraint portion 600 is separated and the first constraint portion 500 is reassembled and locked, the handle assembly 400 is in an unfolded state and can be used.

[0040] Preferably, the first constraint portion 500 includes a first bracket 510 installed on the support 320, and the first bracket 510 is U-shaped, wherein the opening direction of the first bracket 510 is consistent with the lifting direction of the fork leg 110, vertically upward, and a first constraint hole 520 is provided at the opening end of the first bracket 510; a second constraint hole 530 is provided on the pipe fitting 410, wherein, when the first constraint hole 520 and the second constraint hole 530 are coaxially arranged, the first constraint hole 520 and the second constraint hole 530 are synchronously inserted through the pin 540 to achieve the fixation of the relative position between the pipe fitting 410 and the support 320.

[0041] It is worth mentioning that if the constraint between the pipe 410 and the support 320 needs to be released, the pin 540 only needs to be pulled out from the first constraint hole 520 and the second constraint hole 530, and then the pipe 410 can rotate around the support 320 to complete the folding and storage of the handle assembly 400.

[0042] Preferably, the second restraint portion 600 includes a second bracket 610 installed on the column 120, and the second bracket 610 is U-shaped, wherein the opening direction of the second bracket 610 is consistent with the opening direction of the first bracket 510, vertically upward, and a third restraint hole 620 is provided at the opening end of the second bracket 610; a fourth restraint hole 630 is provided on the pipe fitting 410, wherein, when the third restraint hole 620 and the fourth restraint hole 630 are coaxially arranged, the third restraint hole 620 and the fourth restraint hole 630 are synchronously inserted through the pin 540 to achieve the fixation of the relative position between the pipe fitting 410 and the column 120.

[0043] It is worth mentioning that since the release of the constraint between the pipe 410 and the column 120 is the same as the release of the constraint between the pipe 410 and the support 320, it will not be described in detail here.

[0044] In addition, in order to improve the ability of the plug 540 to be inserted into the third restraining hole 620 and the fourth restraining hole 630 synchronously, the third restraining hole 620 is configured to be an oblong hole.

[0045] Furthermore, the latch 540 in the first constraint portion 500 and the second constraint portion 600 can be shared, wherein when the latch 540 is pulled out from the first constraint hole 520 and the second constraint hole 530, the first constraint portion 500 is released, and the latch 540 is inserted into the third constraint hole 620 and the fourth constraint hole 630 to complete the reorganization of the second constraint portion 600, and the handle assembly 400 is in the folding and storage stage; when the latch 540 is pulled out from the third constraint hole 620 and the fourth constraint hole 630, the second constraint portion 600 is released, and the latch 540 is inserted into the first constraint hole 520 and the second constraint hole 530 to complete the reorganization of the first constraint portion 500, and the handle assembly 400 is in the unfolding stage.

[0046] In this embodiment, by providing the second restraint portion 600, the hand pallet truck in the folded storage state will not cause the handle assembly 400 to move up and down due to bumps during transportation, so as to avoid collision between the handle assembly 400 and the column 120, thereby improving the reliability of the hand pallet truck during transportation. In addition, the structure of the first restraint portion 500 and the second restraint portion 600 is basically the same, which provides the possibility of sharing a latch 540 structure, thereby facilitating the management of parts.

[0047] Preferably, the support 320 is provided with a first rotating shaft 321, a second rotating shaft 322 and a third rotating shaft 323, and the first rotating shaft 321 forms a rotational fit with the pipe 410, the second rotating shaft 322 forms a press fit with the valve core 311 in the jack assembly 310, and the third rotating shaft 323 forms a rotational fit with the bracket 312 in the jack assembly 310, wherein the first rotating shaft 321, on the one hand, serves as a first constraint portion 500 when it is released, or when the first constraint portion 500 is reassembled, the pipe 410 rotates. The fulcrum during rotation facilitates the folding, storage and unfolding of the handle assembly 400. On the other hand, it serves as one of the constraint positions when the support 320 and the pipe fitting 410 are relatively fixed when the first constraint portion 500 is reassembled, so that when the support 320 and the bracket 312 rotate relative to each other, no relative rotation occurs between the support 320 and the pipe fitting 410. The second rotating shaft 322 serves as the power for continuously squeezing the valve core 311 when the support 320 and the pipe fitting 410 rotate synchronously around the bracket 312, thereby realizing the rising of the fork leg 110.

[0048] Preferably, the fork foot 110 includes a first fork 111 and a second fork 112 that can rotate relative to each other, and a first loading plane 113 and a second loading plane 114 are respectively provided on the first fork 111 and the second fork 112, wherein the angle formed between the first loading plane 113 and the second loading plane 114 is changed by the relative rotation between the first fork 111 and the second fork 112, and the range of the angle is 0° to 90°.

[0049] It is worth mentioning that when the length of the transported goods is long, the second fork 112 can be lowered so that the first fork 111 is flush with the second fork 112, that is, the first loading plane 113 and the second loading plane 114 are on the same horizontal plane; when the length of the transported goods is short, the second fork 112 can be folded upward so that the first fork 111 and the second fork 112 are perpendicular, that is, the first loading plane 113 and the second loading plane 114 are perpendicular to each other.

[0050] In this embodiment, the second fork 112 serves as an extension of the first fork 111 in the length direction, so that the hand pallet truck can transport goods that are longer in the length direction. The second fork 112 is rotatably connected to the first fork 111. On the one hand, it is ensured that the storage volume of the hand pallet truck will not increase due to the increase in the length of the fork leg 110. On the other hand, when the hand pallet truck is transporting shorter goods, by flipping the second fork 112, a limit blockage in the length direction can be formed for the goods on the first fork 111, thereby improving the reliability of the goods during transportation.

[0051] Further preferably, the first fork 111 and the second fork 112 are connected via a rotating structure 160, wherein the rotating structure 160 includes a first rotating block 161 and a second rotating block 162 respectively connected to the first fork 111 and the second fork 112, and a pin 163 for relative rotation of the first rotating block 161 and the second rotating block 162, and a locking portion 164 for fixing the relative position between the first rotating block 161 and the second rotating block 162 are provided between the first rotating block 161 and the second rotating block 162.

[0052] It is worth mentioning that in order to prevent the second rotating block 162 connected to the second fork 112 from rotating relative to each other and the pin shaft 163 from rotating relative to each other when the first rotating block 161 and the second rotating block 162 rotate relative to each other, it is necessary to relatively fix the second rotating block 162 and the pin shaft 163, and the fixing method is to set a first shaft hole 1631 on the pin shaft 163, and set a second shaft hole 1621 on the second rotating block 162, and the first shaft hole 1631 and the second shaft hole 1621 are coaxially arranged, and a pin is synchronously inserted into the first shaft hole 1631 and the second shaft hole 1621 to achieve relative fixation between the second rotating block 162 and the pin shaft 163.

[0053] Preferably, the locking portion 164 includes a pin 1641, one end of which is threadedly engaged with the second rotating block 162 and locked by a nut 1642, and the other end is snap-engaged with a recessed hole on the first rotating block 161, wherein an elastic glass bead 1643 is provided on the pin 1641, and the elastic glass bead 1643 can move along the axial direction of the pin 1641.

[0054] It is worth mentioning that two concave holes are provided on the first rotating block 161, namely the first concave hole 1611 and the second concave hole 1612, and when the elastic glass bead 1643 forms a snap fit with the first concave hole 1611, the first fork 111 and the second fork 112 are flush, and when the elastic glass bead 1643 forms a snap fit with the second concave hole 1612, the first fork 111 and the second fork 112 are perpendicular, wherein, when the second rotating block 162 and the first rotating block 161 rotate relative to each other, the elastic glass bead 1643 can be transferred from the first concave hole 1611 to the second concave hole 1612.

[0055] It should be noted that in the present invention, descriptions such as "first", "second", "one", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. The terms "connected", "fixed", etc. should be understood in a broad sense. For example, "fixed" can be a fixed connection, a detachable connection, or an integral whole; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0056] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0057] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A foldable manual pallet truck, characterized in that: include: The frame assembly includes a fork leg, and a column connected to one end of the fork leg and integrally arranged with the fork leg, wherein the column extends in a direction away from the fork leg to form a support arm and a top plate, and the top plate and the support arm are arranged up and down along the lifting direction of the fork leg, and a support seat is connected to the support arm; The lifting assembly includes a jack assembly installed on a support seat, the output end of the jack assembly is connected to the top plate, and the top plate is driven to move up and down by the jack assembly; the support seat is provided with a first rotating shaft, a second rotating shaft and a third rotating shaft, wherein the third rotating shaft forms a rotational fit with the jack assembly, and the second rotating shaft abuts against the input end of the jack assembly; The handle assembly includes a pipe fitting, and the pipe fitting is rotatably matched with the support through a first rotating shaft, wherein a first restraining portion is further provided between one end of the pipe fitting rotatably connected with the support and the support, and the folding, storage and unfolding and locking of the handle assembly are achieved through separation and reorganization of the first restraining portion; The first restraining part includes a first bracket mounted on the support, and the first bracket is arranged in a U shape, wherein the opening direction of the first bracket is consistent with the lifting direction of the fork leg, and the opening end of the first bracket is provided with a first restraining hole; a second restraining hole is provided on the pipe fitting, wherein when the first restraining hole and the second restraining hole are arranged coaxially, the relative position between the pipe fitting and the support is fixed by synchronously inserting the first restraining hole and the second restraining hole through the latch; A second restraining portion is formed between one end of the pipe member that is close to the support and the column, wherein the locking of the handle assembly in the folded storage state and the rotation of the handle assembly around the support through the first rotating shaft in the unlocked state are achieved through the re-locking and separation of the second restraining portion; The second restraining part includes a second bracket mounted on the column, and the second bracket is arranged in a U shape, wherein the opening direction of the second bracket is consistent with the opening direction of the first bracket, and the opening end of the second bracket is provided with a third restraining hole; a fourth restraining hole is provided on the pipe fitting, wherein when the third restraining hole and the fourth restraining hole are arranged coaxially, the third restraining hole and the fourth restraining hole are synchronously inserted by a latch to achieve the fixation of the relative position between the pipe fitting and the column; The latch in the first constraint part is shared with the latch in the second constraint part, wherein when the latch is pulled out of the first constraint hole and the second constraint hole and inserted into the third constraint hole and the fourth constraint hole, the first constraint part is separated and the second constraint part is re-locked; when the latch is pulled out of the third constraint hole and the fourth constraint hole and inserted into the first constraint hole and the second constraint hole, the first constraint part is re-locked and the second constraint part is separated; The fork leg comprises a first fork and a second fork formed by extending along the length direction of the first fork, the first fork is provided with a first loading plane, and the second fork is provided with a second loading plane; The first fork and the second fork are connected via a rotating structure, wherein the rotating structure comprises a first rotating block and a second rotating block respectively connected to the first fork and the second fork, and a pin shaft for relative rotation of the first rotating block and the second rotating block is provided between the first rotating block and the second rotating block, and a locking part for fixing the relative position between the first rotating block and the second rotating block; The locking portion includes a pin, one end of which is threadedly engaged with the second rotating block and locked by a nut, and the other end of which is snap-engaged with a recessed hole on the first rotating block, wherein the number of recessed holes is two, namely the first recessed hole and the second recessed hole. When the pin is snap-engaged with the first recessed hole, the first loading plane and the second loading plane are on the same horizontal plane; when the pin is snap-engaged with the second recessed hole, the first loading plane and the second loading plane are perpendicular to each other.

2. A foldable manual pallet truck according to claim 1, characterized in that: When the first constraint part is separated, a single constraint position is formed between the pipe fitting and the support, wherein the pipe fitting rotates around the support through the first rotating shaft; when the first constraint part is reorganized and locked, two constraint positions are formed between the pipe fitting and the support, wherein the position between the pipe fitting and the support is relatively fixed, and the pipe fitting and the support rotate synchronously around the jack assembly through the third rotating shaft.

3. A foldable manual pallet truck according to claim 2, characterized in that: When the first constraint part is separated, the pipe rotates around the support through the first rotating shaft and can be rotated to contact the upper surface of the column, wherein the upper surface of the column is a side surface of the column away from the fork leg, and the column forms support for the handle assembly in the lifting direction of the fork leg.

4. A foldable manual pallet truck according to any one of claims 1 to 3, characterized in that: The first fork and the second fork are rotationally matched, and the angle formed between the first loading plane and the second loading plane is changed through the relative rotation between the first fork and the second fork, and the range of the angle is 0° to 90°.

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