A foldable fork for a compact warehouse fork lift truck

Abstract

The utility model discloses a kind of foldable forks for small warehouse fork truck, including fork base body, fork movable body, rotary connecting pin and fork storage blocking pin, fork movable body is connected with fork base body by rotary connecting pin, and fork base body is hung on fork frame;The material of fork base body and fork movable body is 40Cr with good hardness, toughness and wear resistance, and the material of fork storage blocking pin is 45C, and fork base body and fork movable body are connected by rotary connecting pin, to realize the folding and opening of fork movable body;Fork base body lower portion is provided with movable body support plate, to play the reinforcing support effect to fork movable body, the utility model realizes the folding and opening of fork movable body along fork base body from structure design, and its benefit is that the traffic safety hidden danger caused by large space occupied by fork during fork truck transportation or driving can be avoided.

Description

Technical Field

[0001] This utility model relates to the technical field of forklift fork components, specifically a foldable fork for a small warehouse forklift. Background Technology

[0002] Forks are an important component of forklifts, playing a crucial role in lifting and handling goods. Currently, most forklift forks use a fixed structure mounted on the fork carriage, which is connected to the mast. After the goods handling work is completed, the forks remain in working condition and cannot be folded to reduce their length. This can easily lead to traffic safety hazards due to the large space occupied by the forks during forklift transportation or driving.

[0003] For example, the Chinese utility model patent with publication number CN205973651U provides a folding fork, which achieves the folding of forklift forks by adding hinges, tenons, slots and other structures. It achieves the purpose of folding forks by changing the structure, but it has problems such as low structural strength and complex structure that is not easy to manufacture.

[0004] Therefore, based on the above technical background, this utility model patent provides a foldable fork for a small warehouse forklift. The traditional fork's overall structure is designed as two parts: a fork base and a movable fork body. A base connection hole and a rotating connecting pin are respectively provided on the fork base and the movable fork body to allow the movable fork body to rotate around the fork base, ultimately achieving folding and unfolding of the movable fork body. This avoids traffic safety hazards caused by the large space occupied by the fork during forklift transportation or driving. Simultaneously, a movable body support plate and a thickened base at the base are provided on the fork base to improve the structural strength of the fork base root; a thickened support surface is provided on the movable fork body to improve the structural strength of the bearing surface of the movable fork body. Utility Model Content

[0005] The purpose of this invention is to provide a foldable fork for small warehouse forklifts to solve the problems of low structural strength and complex structure that are difficult to manufacture mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a foldable fork for a small warehouse forklift, comprising a fork assembly, a fork carriage assembly, a mast assembly, and a spring assembly; the fork carriage assembly is fixedly connected to the fork assembly; the mast assembly is fixedly mounted on the fork carriage assembly, and the mast assembly is connected to the small warehouse forklift; the spring assembly is arranged on the fork assembly.

[0007] Preferably, the fork assembly includes a fork base, a movable fork body, and a fork storage stop pin; the movable fork body is tightly attached to the fork base via the fork storage stop pin.

[0008] Preferably, the fork base has a base connection hole; the base connection hole is rotatably engaged with the movable body of the fork via a rotating connecting pin; a movable body support plate is fixedly provided on the side of the fork base away from the fork carriage assembly; a base root thickening body is provided on the fork base; a lower hook and an upper hook are fixedly provided on the side of the fork base near the fork carriage assembly; a meshing rack is provided on the upper hook; a stop pin insertion boss is fixedly provided on the fork base; the fork storage stop pin includes a square stop pin and a small pin shaft; the small pin shaft is inserted into the tail of the square stop pin.

[0009] Preferably, a hinged connecting platform is fixed on the movable fork body; a base limiting body is provided on the movable fork body; and a support surface thickening body is provided on the movable fork body.

[0010] Preferably, the fork base and the movable fork are both made of 40Cr; the fork storage stop pin is made of 45C; and the fork storage stop pin is matched and installed on the stop pin insertion boss.

[0011] Preferably, the elastic component includes an abutment groove, an elastic groove, a spring, and an abutment block; at least one abutment groove is provided on the fork base; at least one elastic groove is provided on the hinged connecting platform; one end of the spring is fixedly connected to the inner wall of the elastic groove; the abutment block is slidably inserted into the elastic groove and fixedly connected to the other end of the spring.

[0012] Preferably, both the abutting groove and the abutting block are arc-shaped right-angled trapezoidal structures, and the inclined surface of the abutting groove and the inclined surface of the abutting block are in sliding contact.

[0013] Preferably, the spring force is less than the weight of the movable part of the fork.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This utility model, by setting up a fork assembly, a fork carriage assembly, and a mast assembly, connects the movable fork body to the fork base via a rotating connecting pin, thereby realizing the folding and unfolding of the movable fork body. A movable body support plate is set at the lower part of the fork base to strengthen the support of the movable fork body. This utility model realizes the folding and unfolding of the movable fork body along the fork base from a structural point of view. Its advantage is that it can avoid traffic safety hazards caused by the large space occupied by the forks during forklift transportation or driving.

[0016] 2. By setting up an elastic component, during the opening of the movable fork, since the spring strength is less than the weight of the movable fork itself, the inclined surface of the abutment groove will press against the inclined surface of the abutment block during the rotation of the movable fork, causing the abutment block to slide in the elastic groove. This causes the spring to contract under force. The force generated by the spring contraction can reduce the rotation speed of the movable fork, thus buffering the movable fork and preventing safety and service life reduction due to excessive rotation of the movable fork. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of another state of the overall structure of this utility model;

[0019] Figure 3 This is a schematic diagram showing the overall structure of this utility model broken down.

[0020] Figure 4 This is a cross-sectional view of the overall structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the fork base of this utility model;

[0022] Figure 6 This is a partial structural breakdown diagram of the present invention;

[0023] Figure 7 For the present utility model Figure 4 Enlarged diagram of point A in the middle.

[0024] In the picture:

[0025] 1. Fork assembly; 2. Fork carriage assembly; 3. Mast assembly; 4. Spring assembly;

[0026] 101. Fork base; 102. Movable fork body; 103. Fork storage stop pin;

[0027] 1011. Base connecting hole; 1012. Movable body support plate; 1013. Base root thickened body; 1014. Lower hook; 1015. Meshing rack; 1016. Upper hook; 1017. Stop pin insertion boss;

[0028] 1021. Rotary connecting pin; 1022. Hinge connecting platform; 1023. Base limiting body; 1024. Support surface thickening body;

[0029] 1031. Square stop pin; 1032. Small pin;

[0030] 401. Abutment groove; 402. Elastic groove; 403. Spring; 404. Abutment block. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this utility model provides a technical solution: a foldable fork for a small warehouse forklift, including a fork assembly 1, a fork carriage assembly 2, a mast assembly 3, and a spring assembly 4; the fork carriage assembly 2 is fixedly connected to the fork assembly 1; the mast assembly 3 is fixedly installed on the fork carriage assembly 2 and is connected to the small warehouse forklift; the spring assembly 4 is arranged on the fork assembly 1;

[0033] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7As shown, the fork assembly 1 includes a fork base 101, a movable fork body 102, and a fork storage stop pin 103. The fork base 101 and the movable fork body 102 are both made of 40Cr, which has good hardness, toughness, and wear resistance. The fork storage stop pin 103 is made of 45C. The total length of the fork assembly 1 is 1220mm, and the height is 700mm. The diameter of the base connection hole 1011 at the root of the fork base 101 is 20mm, and the distance from the base connection hole 1011 is... The movable support plate 1012 at the base of the fork base 101 has a length of 90mm, a width of 80mm, and a thickness of 20mm; the base thickening body 1013 at the base of the fork base 101 has a length of 180mm, a width of 80mm, and a thickness of 70mm; the fork base 101 is equipped with a lower hook 1014 and an upper hook 1016. The lower hook 1014 is located 100mm from the bottom surface of the fork base 101 and 20mm from the left side of the fork base 101. The distance between the lower hook 1014 and the upper hook 1016 is set to 445mm, and the upper hook 1016 is 55mm away from the upper surface of the fork base 101. Both the lower hook 1014 and the upper hook 1016 are set to L-shaped structures with a wall thickness of 20mm, a vertical depth of 25-30mm, and a horizontal depth of 30mm. A meshing rack 1015 is set on the fork base 101, which can not only make the mounting of the fork assembly 1 on the fork carriage assembly 2 more stable, but also restrict the lateral movement of the fork assembly 1 on the fork carriage assembly 2. The length of the meshing rack 1015 is set to 80mm, the width is set to 30mm, the tooth pitch is set to 30mm, and the tooth depth is set to 5mm. A stop pin insertion boss 1017 is set on the top side of the fork base 101, and a fork storage stop pin 103 is inserted into the stop pin insertion boss 1017. The length of the stop pin insertion boss 1017 is 30mm, the width is 15mm, and the thickness is 40mm.

[0034] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6 and Figure 7As shown, the rotating connecting pin 1021 at the right end of the movable fork body 102 has a diameter of 20mm, a length of 170mm, is 80mm from the bottom surface of the movable fork body 102, and is 30mm from the right end face of the movable fork body 102; a hinge connecting platform 1022 is provided on the movable fork body 102 for matching and installing the rotating connecting pin 1021; a base limiting body 1023 is provided on the movable fork body 102 for limiting the rotation range of the movable fork body 102; and a support surface thickening body 1024 is provided on the movable fork body 102 for... To improve the structural strength of the bearing surface of the movable fork body 102; there are two hinged connecting platforms 1022, which are set on the upper end of the base limiting body 1023, with a height of 50mm, a thickness of 40mm, and a diameter of 60mm; the base limiting body 1023 is located at the right end of the movable fork body 102, with a length of 160mm, a width of 140mm, and a thickness of 60mm; the thickened support surface 1024 is located at the bearing end of the movable fork body 102, with a length of 1080mm, a width of 80mm, and a thickness of 60mm.

[0035] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 6 As shown, the fork storage stop pin 103 is L-shaped and is matched and installed on the stop pin insertion boss 1017, so that the movable body 102 of the fork in the folded state can be firmly attached to the fork base 101; the fork storage stop pin 103 has a lateral depth of 120mm, a vertical depth of 50mm, and a thickness of 10mm; the fork storage stop pin 103 includes a square stop pin 1031 and a small pin 1032; the small pin 1032 is inserted into the tail of the square stop pin 1031; the tail of the square stop pin 1031 is provided with a small pin 1032 with a diameter of 5mm and a length of 16mm, 17mm from the end of the fork storage stop pin 103 and 4mm from the side of the fork storage stop pin 103.

[0036] This utility model, by setting up a fork assembly 1, a fork carriage assembly 2, and a mast assembly 3, connects the movable fork body 102 to the fork base 101 via a rotating connecting pin 1021, thereby enabling the folding and unfolding of the movable fork body 102. A movable body support plate 1012 is provided at the lower part of the fork base 101 to strengthen and support the movable fork body 102. This utility model achieves the folding and unfolding of the movable fork body 102 along the fork base 101 from a structural perspective. Its advantage is that it can avoid traffic safety hazards caused by the large space occupied by the forks during forklift transportation or driving.

[0037] As a preferred embodiment, the elastic component 4 includes an abutment groove 401, an elastic groove 402, a spring 403, and an abutment block 404; two abutment grooves 401 are symmetrically provided on both sides of the fork base 101; an elastic groove 402 is provided on the hinged connecting platform 1022; one end of the spring 403 is fixedly connected to the inner wall of the elastic groove 402; the abutment block 404 is slidably inserted into the elastic groove 402 and fixedly connected to the other end of the spring 403; both the abutment groove 401 and the abutment block 404 are arc-shaped right-angled trapezoidal structures, and the inclined surface of the abutment groove 401 slides in contact with the inclined surface of the abutment block 404, and the arc-shaped inclined surfaces of the abutment groove 401 and the abutment block 404 gradually decrease in size along the opening direction of the movable body 102 of the fork; the elastic strength of the spring 403 is less than the weight of the movable body 102 of the fork; when the movable body 102 of the fork is opened and folded, the abutment block 404 does not contact the inner wall of the abutment groove 401.

[0038] By setting up the elastic component 4, this utility model allows the movable fork body 102 to open. Since the elastic strength of the spring 403 is less than the weight of the movable fork body 102 itself, the inclined surface of the abutment groove 401 will press against the inclined surface of the abutment block 404 during the rotation of the movable fork body 102. This causes the abutment block 404 to slide within the elastic groove 402, which in turn causes the spring 403 to contract. The force generated by the contraction of the spring 403 can reduce the rotation speed of the movable fork body 102, thus buffering the movable fork body 102 and preventing safety and service life reduction due to excessive rotation of the movable fork body 102.

[0039] Working principle: During the transportation process of the small warehouse forklift, the movable fork body 102 is held against the fork base 101 by the fork storage pin 103 inserted into the pin insertion boss 1017, thus avoiding traffic safety hazards caused by the large space occupied by the forks during forklift transportation or driving. After the small warehouse forklift arrives at its destination, before lifting the goods, the movable fork body 102 needs to be opened. The opening process is as follows: the square pin 1031 is pulled out from the pin insertion boss 1017 through the small pin 1032, allowing the movable fork body 102, which is held against the fork base 101, to rotate around the rotating connecting pin 1021. Since the elastic strength of the spring 403 is less than the weight of the movable fork body 102 itself, during the rotation of the movable fork body 102, it will... The inclined surface of the abutment groove 401 presses against the inclined surface of the abutment block 404, causing the abutment block 404 to slide within the elastic groove 402. This causes the spring 403 to contract under force. The force generated by the contraction of the spring 403 reduces the rotation speed of the movable fork 102, thus buffering the movable fork 102 and preventing safety and service life reduction due to excessive rotation of the movable fork 102. Then, with the movable fork 102 rotating around the rotatable connecting pin 1021, the movable fork 102 is rotated around the rotatable connecting pin 1021 until the bearing surface of the movable fork 102 is horizontal. Under the action of gravity, the two movable fork 102 in the fork assembly 1 can maintain the same horizontal bearing surface, enabling cargo lifting operations.

[0040] After the small warehouse forklift completes the lifting operation, it needs to be transported to the next work location. Before this, the movable fork body 102 needs to be folded so that it is close to the fork base 101. This is to avoid traffic safety hazards caused by the large space occupied by the forks during transport or travel. The folding process is as follows: First, manually rotate the movable fork body 102 around the rotating connecting pin 1021 until it is close to the fork base 101. When the movable fork body 102 and the fork base 101 are in a folded state, under the elastic force of the spring 403, the abutment block 404 will slide in the opposite direction in the elastic groove 402, so that the inclined surface of the abutment block 404 is always in contact with the inclined surface of the abutment groove 401. Then, the square stop pin 1031 is inserted into the stop pin insertion boss 1017, and the position of the square stop pin 1031 is fixed by the small pin 1032 to maintain the folded state of the movable fork body 102 and the fork base 101.

[0041] The above is the entire working process of the device, and all contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0042] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A foldable fork for a small warehouse forklift, characterized in that, It includes a fork assembly (1), a fork carriage assembly (2), a mast assembly (3), and a spring assembly (4); the fork carriage assembly (2) is fixedly connected to the fork assembly (1); the mast assembly (3) is fixedly installed on the fork carriage assembly (2), and the mast assembly (3) is connected to a small warehouse forklift; the spring assembly (4) is arranged on the fork assembly (1).

2. The foldable fork for a small warehouse forklift according to claim 1, characterized in that, The fork assembly (1) includes a fork base (101), a movable fork body (102), and a fork storage stop (103); the movable fork body (102) is attached to the fork base (101) by the fork storage stop (103).

3. A foldable fork for a small warehouse forklift according to claim 2, characterized in that, The fork base (101) is provided with a base connection hole (1011); the base connection hole (1011) is rotatably engaged with the movable body (102) of the fork through a rotating connecting pin (1021); a movable body support plate (1012) is fixedly provided on the side of the fork base (101) away from the fork carriage assembly (2); a base root thickening body (1013) is provided on the fork base (101); a lower hook (1014) and an upper hook (1016) are fixedly provided on the side of the fork base (101) close to the fork carriage assembly (2); a meshing rack (1015) is provided on the upper hook (1016); a stop pin insertion boss (1017) is fixedly provided on the fork base (101). The fork storage stop pin (103) includes a square stop pin (1031) and a small pin (1032); the small pin (1032) is inserted into the tail of the square stop pin (1031).

4. A foldable fork for a small warehouse forklift according to claim 3, characterized in that, A hinged connecting platform (1022) is fixed on the movable fork body (102); a base limiting body (1023) is provided on the movable fork body (102); and a support surface thickening body (1024) is provided on the movable fork body (102).

5. A foldable fork for a small warehouse forklift according to claim 4, characterized in that, The fork base (101) and the movable fork (102) are both made of 40Cr material; the fork storage stop pin (103) is made of 45C material; the fork storage stop pin (103) is matched and installed on the stop pin insertion boss (1017).

6. A foldable fork for a small warehouse forklift according to claim 5, characterized in that, The elastic component (4) includes an abutment groove (401), an elastic groove (402), a spring (403), and an abutment block (404); at least one abutment groove (401) is provided on the fork base (101); at least one elastic groove (402) is provided on the hinged connecting platform (1022); one end of the spring (403) is fixedly connected to the inner wall of the elastic groove (402); the abutment block (404) slides through the elastic groove (402) and is fixedly connected to the other end of the spring (403).

7. A foldable fork for a small warehouse forklift according to claim 6, characterized in that, Both the abutment groove (401) and the abutment block (404) are arc-shaped right-angled trapezoidal structures, and the inclined surface of the abutment groove (401) and the inclined surface of the abutment block (404) are in sliding contact.

8. A foldable fork for a small warehouse forklift according to claim 6, characterized in that, The spring (403) has a spring strength less than the weight of the movable part of the fork (102).

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