High-stability pallet fork

Abstract

The utility model relates to the field of pallet forks, in particular to a high-stability pallet fork which comprises a bottom plate and a pallet fork body, the pallet fork body is fixedly arranged at the top of the bottom plate through two supporting plates, the pallet fork body comprises a lower fork arm, a middle fork arm and an upper fork arm, the lower fork arm is fixedly arranged at the tops of the two supporting plates, the middle fork arm is arranged at the top of the upper fork arm in a sliding mode, and the upper fork arm is arranged on the bottom plate. The upper fork arm is arranged at the top of the middle fork arm in a sliding mode, the sliding assembly is arranged at the top of the bottom plate, the rotating assembly is arranged on the sliding assembly, the transmission assembly is arranged between the upper fork arm and the rotating assembly, the two sliding rods are fixedly connected with the sliding assembly, and the supporting wheels are arranged on the sliding assembly. According to the high-stability pallet fork, after the upper fork arm and the middle fork arm extend out in a sliding mode, the two sliding rods drive the multiple supporting wheels to slide out, so that the outer walls of the bottoms of the upper fork arm and the middle fork arm are supported, goods are prevented from pressing the fork arms to be inclined due to the fact that the goods are heavy, and the stability of the pallet fork is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a cargo fork field, concretely relates to a high stability cargo fork. BACKGROUND

[0002] In the automated warehouse, the stacker is indispensable, and the core component of the stacker is the cargo fork. The automated warehouse has several layers or dozens of layers, and even dozens of layers, and the function of the stacker is to send the goods to the designated position through the cargo fork.

[0003] Three-section cargo fork is a common telescopic forklift cargo fork, and its principle mainly comprises three-section arms such as upper arm (also called front arm), middle arm and lower arm (also called fixed arm). The three parts cooperate with hundreds of components such as guide rollers, gear racks, chain wheels, chain, guide sliders, limit switches (travel switches), middle switches (proximity switches), torsion limiters, encoders, drivers, motors, reducers and couplings, and constitute a complete telescopic mechanism.

[0004] The existing cargo fork does not have a supporting structure, and the bottom outer wall of the upper arm and the middle arm after sliding out can be supported, and when heavy goods are encountered, the upper arm and the middle arm are prone to being pressed and bent, and the stability needs to be improved. INVENTION CONTENTS

[0005] The utility model aims at providing a high stability cargo fork.

[0006] To achieve this purpose, the utility model adopts the following technical scheme:

[0007] A high stability cargo fork is provided, which comprises a bottom plate and a cargo fork body, the cargo fork body is fixedly arranged on the top of the bottom plate through two supporting plates, the cargo fork body comprises a lower arm, a middle arm and an upper arm, the lower arm is fixedly arranged on the top of the two supporting plates, the middle arm is slidingly arranged on the top of the upper arm, and the upper arm is slidingly arranged on the top of the middle arm.

[0008] It also comprises a transmission assembly, a rotating assembly, a sliding assembly, two sliding rods and a plurality of supporting wheels.

[0009] The sliding assembly is arranged on the top of the bottom plate, the rotating assembly is arranged on the sliding assembly, the transmission assembly is arranged between the upper arm and the rotating assembly, and the two sliding rods are fixedly connected with the sliding assembly.

[0010] Preferably, the transmission assembly comprises a rack, a spur gear, two connecting rods and two connecting blocks, the top of the bottom plate is symmetrically provided with two guide rails, the rack is slidably arranged on the top of one of the guide rails, the two connecting rods are fixedly arranged on the outer wall of one side of the upper fork arm, and each connecting block is fixedly arranged between one end of the rack and one connecting rod; a mounting plate is fixedly arranged on the outer wall of the guide rail, a first rotating shaft is rotatably arranged on the mounting plate, and the spur gear is fixedly arranged on the first rotating shaft and meshed with the rack.

[0011] Preferably, the sliding assembly comprises a lead screw, a sliding block, two connecting plates and two guide rods, the top of the bottom plate is fixedly provided with two vertical plates, the lead screw is rotatably arranged between the two vertical plates, the sliding block is threadedly connected to the outer wall of the lead screw, and the two guide rods are fixedly arranged between the two vertical plates; each guide rod is slidably connected with the sliding block, and each connecting plate is fixedly arranged between one end of the sliding block and one guide rod.

[0012] Preferably, the rotating assembly comprises a first bevel gear, a second bevel gear, a driving wheel, a driven wheel and a belt, a second rotating shaft is further rotatably arranged on the outer wall of the mounting plate, the first bevel gear and the second bevel gear are fixedly arranged on the first rotating shaft and the second rotating shaft respectively, the first bevel gear and the second bevel gear are meshed, the driving wheel is fixedly arranged at one end of the second rotating shaft away from the second bevel gear, the driven wheel is fixedly arranged at one end of the lead screw, and the belt is sleeved between the driving wheel and the driven wheel.

[0013] Preferably, the top of the other guide rail is slidably provided with a sliding strip, the top of the sliding strip is fixedly provided with a sliding plate, and two short rods are fixedly arranged between the sliding plate and one of the guide rods away from the rack.

[0014] Preferably, each supporting wheel comprises a first cylinder and a second cylinder, a plurality of hinged shafts are equidistantly arranged on the outer wall of each guide rod, and the first cylinder and the second cylinder are fixedly arranged on the hinged shafts; the first cylinder is attached to one end of the bottom of the middle fork arm, and the second cylinder is attached to one end of the bottom of the upper fork arm.

[0015] Preferably, the top of the upper fork arm is attached with a non-slip pad made of rubber material.

[0016] Preferably, the bottom of the lower fork arm is fixedly provided with a housing, and the outer wall of the housing is inserted with a driving motor.

[0017] The utility model discloses the beneficial effect of the following:

[0018] 1. The utility model discloses a transmission assembly, rotating assembly, sliding assembly, two slide rods and a plurality of supporting wheels are designed, through the cooperation of the above structure, after the upper fork arm and the middle fork arm slide and stretch out, a plurality of supporting wheels are driven by two slide rods to slide out, thereby supporting the outer wall of the bottom of the upper fork arm and the middle fork arm, preventing the fork arm from being pressed and bent due to heavy goods, and further improving the stability of the fork.

[0019] 2. The utility model discloses a transmission assembly can drive several supporting wheels to stretch out forward at the same time when the upper fork arm slides out, and can support the bottom of the upper fork arm and the middle fork arm before the upper fork arm receives goods, thereby preparing for receiving goods and improving the practicability of the fork.

[0020] 3. The utility model discloses a supporting wheel is designed to be composed of a first cylinder and a second cylinder, and the first cylinder is attached to one end of the bottom of the middle fork arm, and the second cylinder is attached to one end of the bottom of the upper fork arm, thereby accurately supporting the sliding fork arm of the whole fork, and the supporting wheel can rotate and will not be in contact with the sliding fork arm, thereby further improving the stability of the fork in operation. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings in the embodiments of the present application are briefly introduced as follows.

[0022] Figure 1 is a schematic view of the three-dimensional structure of the utility model Figure 1 ;

[0023] Figure 2 is an enlarged view of A in Figure 1 ;

[0024] Figure 3 is a schematic view of the cross-sectional structure of the sliding plate of the utility model

[0025] Figure 4 is an enlarged view of B in Figure 3 ;

[0026] Figure 5 is a side view of the utility model

[0027] Figure 6 is an enlarged view of C in Figure 5 ;

[0028] Figure 7 is a schematic view of the three-dimensional structure of the utility model Figure 2 ;

[0029] In the drawing: fork body 1, lower fork arm 2, middle fork arm 3, upper fork arm 4, slide rod 5, supporting wheel 6, rack 7, spur gear 8, connecting rod 9, connecting block 10, guide rail 11, screw rod 12, sliding block 13, connecting plate 14, guide rod 15, first bevel gear 16, second bevel gear 17, driving pulley 18, driven pulley 19, belt 20, slide strip 21, sliding plate 22, short rod 23, first cylinder 24, second cylinder 25, non-slip pad 26, housing 27, driving motor 28. DETAILED DESCRIPTION

[0030] The technical solutions of the present application will be further illustrated below with reference to the drawings and specific embodiments.

[0031] The drawings are only used for illustrative purposes, and the representations are only schematic diagrams, not physical diagrams, and cannot be understood as limitations of the patent; in order to better illustrate the embodiments of the present application, some components of the drawings will be omitted, enlarged or reduced, and do not represent the actual product size.

[0032] Referring to Figures 1 to 7 As shown in the drawings, a high-stability fork includes a bottom plate and a fork body 1, the fork body 1 is fixedly arranged on the top of the bottom plate through two support plates, the fork body 1 includes a lower fork arm 2, a middle fork arm 3 and an upper fork arm 4, the lower fork arm 2 is fixedly arranged on the top of the two support plates, the middle fork arm 3 is slidingly arranged on the top of the upper fork arm 4, and the upper fork arm 4 is slidingly arranged on the top of the middle fork arm 3.

[0033] Further comprising a transmission assembly, a rotating assembly, a sliding assembly, two slide rods 5 and a plurality of supporting wheels 6.

[0034] The sliding assembly is arranged on the top of the bottom plate, the rotating assembly is arranged on the sliding assembly, the transmission assembly is arranged between the upper fork arm 4 and the rotating assembly, and the two slide rods 5 are fixedly connected with the sliding assembly.

[0035] Referring to Figures 1 to 7 As shown in the drawings, the transmission assembly includes a rack 7, a spur gear 8, two connecting rods 9 and two connecting blocks 10, the top of the bottom plate is symmetrically provided with two guide rails 11, the rack 7 is slidingly arranged on the top of one of the guide rails 11, the two connecting rods 9 are fixedly arranged on one side of the outer wall of the upper fork arm 4, each connecting block 10 is fixedly arranged between one end of the rack 7 and one connecting rod 9, an installation plate is fixedly arranged on the outer wall of the guide rail 11, a first rotating shaft is rotatably arranged on the installation plate, the spur gear 8 is fixedly arranged on the first rotating shaft, the spur gear 8 is in meshing connection with the rack 7, when the upper fork arm 4 slides away from the end of the driving motor 28, the rack 7 is in sliding connection with one of the guide rails 11, the spur gear 8 is in meshing connection with the rack 7, the spur gear 8 is fixedly connected with the first rotating shaft, so as to drive the first rotating shaft to rotate.

[0036] Referring to Figures 1 to 7As shown, the sliding assembly comprises a screw rod 12, a sliding block 13, two connecting plates 14 and two guide rods 15, the top of the base plate is fixedly provided with two vertical plates, the screw rod 12 is rotatably arranged between the two vertical plates, the sliding block 13 is threadedly connected to the outer wall of the screw rod 12, the two guide rods 15 are fixedly arranged between the two vertical plates, each guide rod is slidably connected with the sliding block 13, each connecting plate 14 is fixedly arranged between one end of the sliding block 13 and one sliding rod 5, when the screw rod 12 rotates, since the sliding block 13 is threadedly connected with the screw rod 12, the two guide rods 15 are fixedly connected with the two vertical plates respectively, the two guide rods are slidably connected with the sliding block 13, one end of the sliding block 13 and one sliding rod 5 are fixedly connected with two ends of each connecting plate 14 respectively, so as to drive the sliding rod 5 and the plurality of supporting wheels 6 on the outer wall of the sliding rod 5 to slide away from the driving motor 28.

[0037] With reference to Figures 1 to 7 As shown, the rotating assembly comprises a first bevel gear 16, a second bevel gear 17, a driving wheel 18, a driven wheel 19 and a belt 20, a second rotating shaft is further rotatably arranged on the outer wall of the mounting plate, the first bevel gear 16 and the second bevel gear 17 are fixedly arranged on the first rotating shaft and the second rotating shaft respectively, the first bevel gear 16 and the second bevel gear 17 are meshingly connected, the driving wheel 18 is fixedly arranged at one end of the second rotating shaft away from the second bevel gear 17, the driven wheel 19 is fixedly arranged at one end of the screw rod 12, the belt 20 is sleeved between the driving wheel 18 and the driven wheel 19, when the first rotating shaft rotates, since the first bevel gear 16 is fixedly connected with the first rotating shaft, the second bevel gear 17 and the driving wheel 18 are fixedly connected with two ends of the second rotating shaft respectively, the first bevel gear 16 and the second bevel gear 17 are meshingly connected, the driven wheel 19 is fixedly connected with the screw rod 12, the driving wheel 18 and the driven wheel 19 are sleeved through the belt 20, so as to drive the screw rod 12 to rotate.

[0038] With reference to Figures 1 to 7 As shown, the top of the other guide rail 11 is slidably provided with a sliding strip 21, the top of the sliding strip 21 is fixedly provided with a sliding plate 22, two short rods 23 are fixedly arranged between the sliding plate 22 and one of the sliding rods 5 away from the rack 7, when one of the sliding rods 5 slides away from the driving motor 28, the other sliding rod 5 is slidably connected with the other guide rail 11 through the sliding plate 22 and the sliding strip 21, so as to improve the stability of the sliding of the two sliding rods 5 and provide better support effect for the center fork arm 3 and the upper fork arm 4.

[0039] With reference to Figures 1 to 7As shown, each of the rollers 6 comprises a first cylinder 24 and a second cylinder 25, and a plurality of hinge shafts are arranged at equal intervals on the outer wall of each slide rod 5, the first cylinder 24 and the second cylinder 25 are fixedly arranged on the hinge shafts, the first cylinder 24 is attached to one end of the bottom of the middle fork arm 3, and the second cylinder 25 is attached to one end of the bottom of the upper fork arm 4, when the slide rod 5 and the plurality of rollers 6 on the outer wall thereof slide away from the end of the driving motor 28, since the first cylinder 24 and the second cylinder 25 are fixedly connected with the hinge shafts, the first cylinder 24 is attached to one end of the bottom of the middle fork arm 3, and the second cylinder 25 is attached to one end of the bottom of the upper fork arm 4, thereby making the first cylinder 24 and the second cylinder 25 respectively attached to the bottom of the middle fork arm 3 and the upper fork arm 4, playing a supporting role, thereby improving the stability of the cargo fork in carrying goods.

[0040] With reference to Figures 1 to 7 As shown, the top of the upper fork arm 4 is attached with a non-slip pad 26 made of rubber material, the non-slip pad 26 is used to increase the friction between the bottom of the goods and the top of the upper fork arm 4, preventing the goods from falling during transportation.

[0041] With reference to Figures 1 to 7 As shown, the bottom of the lower fork arm 2 is fixedly provided with a cover 27, the cover 27 is inserted with a driving motor 28 on the outer wall thereof, the cover 27 is used to install the driving motor 28, a chain wheel is fixedly installed on the output end of the driving motor 28, the inside of the lower fork arm 2 is provided with a transmission structure, the chain wheel is connected with the transmission structure, when the driving motor 28 is started, the output end thereof drives the transmission mechanism to work through the chain wheel, thereby driving the middle fork arm 3 to slide away from the end of the top of the lower fork arm 2, and then driving the upper fork arm 4 to slide away from the end of the driving motor 28, it should be noted that the structure of the cargo fork body 1 belongs to the prior art, and will not be described here.

Claims

1. A high-stability fork, comprising a bottom plate and a fork body (1), the fork body (1) is fixedly arranged on the top of the bottom plate through two supporting plates, the fork body (1) comprises a lower fork arm (2), a middle fork arm (3) and an upper fork arm (4), the lower fork arm (2) is fixedly arranged on the top of the two supporting plates, the middle fork arm (3) is slidingly arranged on the top of the upper fork arm (4), and the upper fork arm (4) is slidingly arranged on the top of the middle fork arm (3), characterized in that: it further comprises a transmission assembly, a rotating assembly, a sliding assembly, two sliding rods (5) and a plurality of supporting wheels (6); the sliding assembly is arranged on the top of the bottom plate, the rotating assembly is arranged on the sliding assembly, the transmission assembly is arranged between the upper fork arm (4) and the rotating assembly, and the two sliding rods (5) are fixedly connected with the sliding assembly.

2. The high-stability fork according to claim 1, characterized in that: The transmission assembly comprises a rack (7), a spur gear (8), two connecting rods (9) and two connecting blocks (10), the top of the bottom plate is provided with two guide rails (11) in a symmetrical manner, the rack (7) is slidingly arranged on the top of one of the guide rails (11), the two connecting rods (9) are fixedly arranged on one side of the outer wall of the upper fork arm (4), each connecting block (10) is fixedly arranged between one end of the rack (7) and one connecting rod (9), the outer wall of the guide rail (11) is fixedly provided with a mounting plate, the mounting plate is rotatably provided with a first rotating shaft, and the spur gear (8) is fixedly arranged on the first rotating shaft and is in meshing connection with the rack (7).

3. The high-stability fork according to claim 2, wherein: The sliding assembly comprises a lead screw (12), a sliding block (13), two connecting plates (14) and two guide rods (15), the top of the bottom plate is fixedly provided with two vertical plates, the lead screw (12) is rotatably arranged between the two vertical plates, the sliding block (13) is threadedly connected to the outer wall of the lead screw (12), the two guide rods (15) are fixedly arranged between the two vertical plates, each guide rod is in sliding connection with the sliding block (13), and each connecting plate (14) is fixedly arranged between one end of the sliding block (13) and one sliding rod (5).

4. The high-stability fork according to claim 3, wherein: The rotating assembly comprises a first bevel gear (16), a second bevel gear (17), a driving wheel (18), a driven wheel (19) and a belt (20), the outer wall of the mounting plate is further rotatably provided with a second rotating shaft, the first bevel gear (16) and the second bevel gear (17) are fixedly arranged on the first rotating shaft and the second rotating shaft respectively, the first bevel gear (16) and the second bevel gear (17) are in meshing connection, the driving wheel (18) is fixedly arranged at one end of the second rotating shaft away from the second bevel gear (17), the driven wheel (19) is fixedly arranged at one end of the lead screw (12), and the belt (20) is sleeved between the driving wheel (18) and the driven wheel (19).

5. The high-stability fork according to claim 4, characterized in that: The top of the other guide rail (11) is slidingly provided with a sliding strip (21), the top of the sliding strip (21) is fixedly provided with a sliding plate (22), and the sliding plate (22) and the sliding rod (5) away from the rack (7) are fixedly provided with two short rods (23).

6. The high-stability fork according to claim 5, wherein: Each supporting wheel (6) comprises a first cylinder (24) and a second cylinder (25), and a plurality of hinge shafts are arranged on the outer wall of each slide rod (5) at equal intervals, the first cylinder (24) and the second cylinder (25) are fixed on the hinge shafts, the first cylinder (24) is attached to one end of the bottom of the middle fork arm (3), and the second cylinder (25) is attached to one end of the bottom of the upper fork arm (4).

7. The high-stability fork according to claim 6, wherein: A non-slip pad (26) is attached to the top of the upper fork arm (4), and the non-slip pad (26) is made of rubber.

8. The high-stability fork according to claim 7, characterized in that: A cover (27) is fixed to the bottom of the lower fork arm (2), and a driving motor (28) is inserted into the outer wall of the cover (27).

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