Forklift structure with rotating clamping forks

Abstract

The application provides a forklift structure with rotating clamping forks. The forklift structure comprises a fork autonomous rotating part, a push-pull electromagnet clamping part, a turnover pressure stabilizing part, a hydraulic scissor lifting part, a fork forward moving part and a vehicle body four-wheel driving part. The fork autonomous rotating part is located on the hydraulic scissor lifting platform and is connected with the bottom plate of the fork forward moving part through a sliding block and an external large gear. The push-pull electromagnet clamping part is located on the hydraulic scissor lifting platform.

Description

Technical Field

[0001] This invention relates to the field of forklifts, specifically a forklift structure with rotating clamping forks. Background Technology

[0002] With the rapid development of my country's industry, enterprises have increasingly greater demands for transportation, and the types of goods transported are becoming more diverse. Due to the advantages of forklifts in loading and unloading, they have become a crucial link in the transportation process. However, traditional forklifts have a single fork design, serving only the function of loading goods without considering the stability of the goods during transportation. Furthermore, the loading and unloading capabilities of traditional forklifts are greatly affected by the overall size of the forklift, lacking sufficient fork flexibility and making it difficult to perform flexible loading and unloading operations in confined spaces. Summary of the Invention

[0003] This invention addresses the shortcomings of existing technologies by providing a forklift structural design that ensures cargo stability during transportation and enables loading and unloading in confined spaces. The cargo is stabilized by a tilting plate that rises and flips. The fork rotation and clamping functions are achieved through a system of wheels, arc-shaped sliders, arc-shaped guide rails, push-pull electromagnets, and arc-shaped clamping rods.

[0004] This invention relates to a rotary clamping forklift, which mainly includes a fork self-rotating part, a push-pull electromagnet clamping part, a tilting and stabilizing part, a hydraulic scissor lift part, a fork forward moving part, and a four-wheel drive part.

[0005] Optionally, the fork self-rotating part is located on a hydraulic scissor lift platform and is connected to the base plate of the fork forward movement part via a slider and an external large gear. It includes a fixed motor frame, a drive motor, a connecting key, a connecting sleeve, a deep groove ball bearing, an intermediate drive gear, a driven idler gear, an external large gear, an arc-shaped guide rail slider, and an arc-shaped guide rail. One end of the fixed motor frame is connected to the hydraulic scissor lift platform, and the other end is connected to the drive motor. One end of the connecting sleeve is connected to the drive motor, and the other end is connected to the intermediate drive gear via a connecting key. The intermediate drive gear and the driven idler gear are both fixed to the hydraulic scissor lift platform via deep groove ball bearings. The external large gear is fixed to the base plate of the fork forward movement part. The arc-shaped guide rail is fixed to the hydraulic scissor lift platform, and two arc-shaped guide rails form a circle concentric with the center of the intermediate drive gear. Three arc-shaped guide rail sliders are evenly distributed on the arc-shaped guide rail and connected to the base plate of the fork forward movement part.

[0006] Optionally, the push-pull electromagnet clamping part is located on the hydraulic scissor lift platform and includes a push-pull electromagnet part, a connecting plate, a short connecting shaft, an arc-shaped clamping rod 1, a middle connecting shaft, a connecting rod, an arc-shaped clamping rod 2, a long connecting shaft, and a guide wheel. The push-pull electromagnet part includes an electromagnet base, an electromagnet, a guide rod, and a spring. The electromagnet base is connected and fixed to the hydraulic scissor lift platform, and its upper part is connected to one end of the arc-shaped clamping rod 1 through the connecting plate. The middle of the arc-shaped clamping rod 1 is connected to the hydraulic scissor lift platform through the middle connecting shaft. The two arc-shaped clamping rods are connected to the connecting rod through the short connecting shaft. The middle of the arc-shaped clamping rod 2 is connected to the hydraulic scissor lift platform through the middle connecting shaft, and one end is connected to the guide wheel through the long connecting shaft. The guide wheel is constrained in a slot opened in the hydraulic scissor lift platform.

[0007] Optionally, the tilting and stabilizing section is located on the forward-moving section of the vehicle body and is divided into a rising section and a tilting section, with a U-shaped plate connecting the rising section and the tilting section. The rising section includes a motor, a motor connecting plate, a coupling, a lead screw, a bearing housing, a lead screw slider, a guide rail, a guide rail slider, and a U-shaped plate. The motor is connected to the forward-moving section of the vehicle body via the motor connecting plate, and the motor output shaft is connected to the lead screw via the coupling. The lead screw is fixed to the forward-moving section of the vehicle body by two bearing housings. The U-shaped plate is connected to the lead screw slider and the guide rail slider. The tilting section includes a motor, a coupling, a rotating shaft, a connecting piece, a guide shaft, a guide plate, a tilting plate, and a U-shaped plate. One end of the connecting piece is connected to the tilting plate, and the other end is connected to the guide plate via the rotating shaft and the guide shaft. The motor is fixed to the U-shaped plate and is connected to the rotating shaft via the coupling.

[0008] Optionally, the hydraulic scissor lift includes a platform, a support rod, a long crossbar, a middle crossbar, a short crossbar, a base, a hydraulic cylinder, and a hydraulic rod. The front end of the platform is connected to the support rod via the middle crossbar, and the rear end is connected to the support rod via the short crossbar. The support rod is connected to the long crossbar, middle crossbar, and short crossbar to form a scissor lift structure. The hydraulic cylinder is connected to the base, and the hydraulic rod is installed inside the hydraulic cylinder. The hydraulic rod is connected to the base via the long crossbar. The base is fixed to the overall vehicle body.

[0009] Optionally, the fork-moving section includes a moving section body, a guide rail frame, guide rail wheels, a motor, a coupling, a lead screw, a lead screw slider, and a bearing housing. The motor is fixed to the hydraulic scissor lift platform, connected to the coupling, and then connected to the lead screw; the lead screw slider is connected to the moving section body; the guide rail wheels are fixed to the moving section body and mounted on the guide rail frame; the guide rail frame is fixed to the hydraulic scissor lift platform.

[0010] The beneficial effects of this invention are as follows: It provides a rotating clamping forklift that, through its autonomous fork rotation structure, can meet multi-directional loading and unloading needs. The clamping structure can satisfy the functions of fork braking and bearing part of the load. Simultaneously, it enables the forklift to complete loading and unloading functions in confined spaces, improving its flexibility. Attached Figure Description

[0011] Figure 1 This is a structural diagram of the present invention;

[0012] Figure 2 This is a diagram of the rotating and clamping structure of the gear train of the present invention;

[0013] Figure 3 This is a diagram of the flip-type voltage-stabilized structure of the present invention;

[0014] Figure 4 This is a diagram of the drive gear connection structure of the present invention;

[0015] Figure 5 This is a detailed view of the drive gear connection of the present invention;

[0016] In the diagram: Forks (8), forward-moving base plate (509), guide rail wheel frame (503), short crossbar (403), long crossbar (405), hydraulic rod (406), bottom body (6), forklift wheel (7), base (408), support rod (404), platform (401), forward-moving body (501), tilting plate (317), long connecting shaft (211), guide wheel (212), arc-shaped guide rail slider (109), passive idler wheel (107), intermediate drive gear (106), external large gear (108), arc-shaped guide rail (110), arc-shaped clamping rod 2 (210), connecting rod (209), short connecting shaft (206), middle connecting shaft (209). 8) Arc-shaped clamping rod 1 (207), electromagnet base (201), guide rod (203), electromagnet (202), connecting plate (205), spring (204), motor (311), coupling (312), connector (314), guide shaft (315), guide plate (316), motor connecting plate (302), coupling (303), bearing seat (305), rotating shaft (313), U-shaped plate (309), hexagonal head bolt M8 (318), guide rail (307), lead screw (304), fixed motor frame (101), drive motor (102), connecting sleeve (104), connecting key (103), deep groove ball bearing (105). Detailed Implementation

[0017] To better explain and facilitate understanding of the present invention, the invention will be described in detail below with reference to the accompanying drawings.

[0018] Combination Figure 1The present invention is a rotating clamping forklift, which mainly includes a fork self-rotating part, a push-pull electromagnet clamping part, a tilting and stabilizing part, a hydraulic scissor lifting part, a fork forward moving part, and a four-wheel drive part of the vehicle body.

[0019] Combination Figure 2 and Figure 4 The fork self-rotating structure is located on the hydraulic scissor lift platform and is connected to the base plate of the fork forward movement section via a slider and an external large gear. It includes a fixed motor frame, a drive motor, a connecting key, a connecting sleeve, a deep groove ball bearing, a central drive gear, a driven idler gear, an external large gear, an arc-shaped guide rail slider, and an arc-shaped guide rail. One end of the fixed motor frame is connected to the hydraulic scissor lift platform, and the other end is connected to the drive motor, thus fixing the motor in place. One end of the connecting sleeve is connected to the drive motor, and the other end is connected to the central drive gear via a connecting key, allowing the motor to connect to the gear and drive the central drive gear to rotate. Both the central drive gear and the driven idler gear are fixed to the hydraulic scissor lift platform via deep groove ball bearings. The external large gear is fixed to the base plate of the fork forward movement section. The rotation of the central drive gear drives the driven idler gear, which in turn drives the external large gear, ultimately rotating the base plate of the fork forward movement section, thus achieving the rotation of the entire fork. The arc-shaped guide rail is fixed to the hydraulic scissor lift platform. The two arc-shaped guide rails form a circle concentric with the center of the central drive gear. Three arc-shaped guide rail sliders are evenly distributed on the arc-shaped guide rail and are connected to the base plate of the fork forward movement part. After the base plate rotates, it drives the three arc-shaped guide rail sliders to rotate around the arc-shaped guide rail without affecting the overall rotation and can share the load.

[0020] Combination Figure 2 The push-pull electromagnet clamping section is located on the hydraulic scissor lift platform and includes a push-pull electromagnet part, a connecting plate, a short connecting shaft, an arc-shaped clamping rod 1, a middle connecting shaft, a connecting rod, an arc-shaped clamping rod 2, a long connecting shaft, and a guide wheel. The push-pull electromagnet part includes an electromagnet base, an electromagnet, a guide rod, and a spring. The electromagnet base is connected and fixed to the hydraulic scissor lift platform, and its upper end is connected to one end of the arc-shaped clamping rod 1 through the connecting plate. The middle part of the arc-shaped clamping rod 1 is connected to the hydraulic scissor lift platform through the middle connecting shaft. The two arc-shaped clamping rods are connected to the connecting rod through the short connecting shaft. The middle part of the arc-shaped clamping rod 2 is connected to the hydraulic scissor lift platform through the middle connecting shaft, and one end is connected to the guide wheel through the long connecting shaft. The guide wheel is constrained in a slot opened in the hydraulic scissor lift platform. When the push-pull electromagnet is de-energized, the two arc-shaped clamping rods spring open. When energized, the electromagnet moves forward instantaneously, compressing the spring. The arc-shaped clamping rod 1, connected to the electromagnet, rotates around the central connecting shaft, clamping the forward-moving part of the base plate. At the same time, the arc-shaped clamping rod 2, driven by the connecting rod, rotates around the central connecting shaft, clamping the forward-moving part of the base plate. The guide wheel provides support and guidance.

[0021] Combination Figure 3The tilting and stabilizing section is located on the forward-moving section of the vehicle body and is divided into a rising section and a tilting section, connected by a U-shaped plate. The rising section includes a motor, a motor connecting plate, a coupling, a lead screw, bearing seats, a lead screw slider, a guide rail, a guide rail slider, and a U-shaped plate. The motor is connected to the forward-moving section of the vehicle body via the motor connecting plate. The motor output shaft is connected to the lead screw via the coupling. The lead screw is fixed to the forward-moving section of the vehicle body by two bearing seats. The U-shaped plate is connected to the lead screw slider and the guide rail slider. Driven by the motor, the lead screw rotates through the coupling, causing the lead screw slider to move upwards. The U-shaped plate, connected to the lead screw slider and the guide rail slider, moves the U-shaped plate upwards, causing the guide rail slider to move upwards along the guide rail, which provides guidance. The tilting section includes a motor, a coupling, a rotating shaft, connecting parts, a guide shaft, a guide plate, a tilting plate, and a U-shaped plate. One end of the connector is connected to the tilting plate, and the other end is connected to the guide plate via a rotating shaft and a guide shaft. The motor is fixed to the U-shaped plate and driven by the motor, which is connected to the rotating shaft via a coupling. The motor drives the connector to rotate, causing the tilting plate to rotate 90° along a designated path on the guide plate, thus stabilizing the goods. The lifting and tilting parts can be used in conjunction. When the tilting plate is higher than the height of the transported goods, the lifting part can be lowered appropriately, causing the tilting plate to decrease in height and stabilize the goods.

[0022] The hydraulic scissor lift mechanism includes a platform, support rods, a long crossbar, a middle crossbar, a short crossbar, a base, a hydraulic cylinder, and hydraulic rods. The front end of the platform is connected to the support rod via the middle crossbar, and the rear end is connected to the support rod via the short crossbar. The support rods are connected by the long, middle, and short crossbars to form the scissor lift structure. The hydraulic cylinder is connected to the base, and the hydraulic rods are housed within the cylinder. The hydraulic rods are connected to the base via the long crossbar, and the base is fixed to the overall vehicle body. Driven by oil pressure, the hydraulic rods move backward along the hydraulic cylinder, causing the long crossbar connected to the base to move along a groove in the base. The long crossbar connects to the support rod, thus unfolding the entire scissor lift structure, achieving the overall lifting function. Similarly, when the hydraulic rods move forward along the hydraulic cylinder under oil pressure, the entire scissor lift structure retracts, achieving the overall lowering function.

[0023] The fork-moving section includes a moving section body, guide rail frame, guide rail wheels, motor, coupling, lead screw, lead screw slider, and bearing housing. The motor is fixed to the hydraulic scissor lift platform and connected to the coupling, which in turn connects to the lead screw. The motor drives the lead screw to rotate via the coupling, enabling the lead screw slider to move forward and backward. The lead screw slider is connected to the moving section body, causing it to move forward. The guide rail wheels are fixed to the moving section body and mounted on the guide rail frame, which is fixed to the hydraulic scissor lift platform, serving to guide and distribute the load.

[0024] When the forklift is in its initial state, the scissor lift mechanism retracts, the push-pull electromagnet is energized, and the two arc-shaped clamping rods grip the forward-moving base plate. After the forklift moves to the designated loading location, the hydraulic rod is driven by oil pressure, moving the long crossbar, unfolding the scissor lift mechanism, and raising the scissor lift platform. After rising to the designated height, the forks move forward to load the goods, the forks retract, the scissor lift mechanism retracts, and the tilting and stabilizing section rises along the lead screw and guide rail driven by the motor. After reaching the designated position, the tilting section motor drives the tilting plate to tilt along the designated path of the guide plate, stabilizing the goods. If the tilting plate is too high, the rising section motor drives in the opposite direction, causing the tilting plate to descend as a whole, stabilizing the goods, completing the forklift loading process. When the forks need to rotate, the push-pull electromagnet is de-energized, the spring opens, and the two arc-shaped clamping rods open. The motor, connected to the central drive gear, drives the gear train to rotate, causing the upper forks to rotate as a whole. This causes the three sliders to rotate along the arc-shaped guide rail, simultaneously sharing the load. After rotating to the designated position, the push-pull electromagnet is energized, the spring contracts, and the two arc-shaped clamping rods retract to clamp, ensuring stability. When the forklift needs to unload, the unloading process is reversed according to the above forklift loading procedure. This is the complete implementation step of the invention.

[0025] The present invention has been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other modifications under the guidance of the present invention without departing from the spirit and scope of the claims. All of these modifications are within the protection scope of the present invention.

Claims

1. A structure of a forklift truck in which a rotary clamp type fork is used, characterized by: The fork autonomous rotating part, the push-pull electromagnet clamping part, the turnover pressure stabilizing part, the hydraulic scissor lifting part, the fork forward moving part and the vehicle body four-wheel driving part are included; the fork autonomous rotating part and the push-pull electromagnet clamping part are located between the hydraulic scissor lifting part platform (401) and the fork forward moving part vehicle body bottom plate (509); the turnover pressure stabilizing part is located on the forward moving vehicle body (501); the push-pull electromagnet clamping part includes a push-pull electromagnet part, a connecting plate (205), a short connecting shaft (206), an arc-shaped clamping rod one (207), a middle connecting shaft (208), a connecting rod (209), an arc-shaped clamping rod two (210), a long connecting shaft (211) and a guide wheel (212); the push-pull electromagnet part includes an electromagnet base (201), an electromagnet (202), a guide rod (203) and a spring (204), the electromagnet base (201) is fixedly connected with the hydraulic scissor lifting platform (401), the upper part is connected with one end of the arc-shaped clamping rod one (207) through the connecting plate (205), the arc-shaped clamping rod one (207) is connected in the middle and connected with the hydraulic scissor lifting platform (401) through the middle connecting shaft (208); the arc-shaped clamping rod one (207) and the arc-shaped clamping rod two (210) are connected with the connecting rod (209) through the short connecting shaft (206); the arc-shaped clamping rod two (210) is connected in the middle and connected with the hydraulic scissor lifting platform (401) through the middle connecting shaft (208), one end is connected with the guide wheel (212) through the long connecting shaft (211), and the guide wheel (212) is constrained in the groove opened in the hydraulic scissor lifting platform (401).

2. The structure of a forklift truck with rotating clamping forks according to claim 1, characterized in that: The fork autonomous rotating part is located between the hydraulic scissor lifting platform (401) and the fork forward moving part bottom plate (509), and includes a fixed motor frame (101), a driving motor (102), a coupling key (103), a connecting sleeve (104), a deep groove ball bearing (105), an intermediate driving gear (106), a passive idler (107), an external large gear (108), an arc-shaped guide rail slider (109) and an arc-shaped guide rail (110); one part of the fixed motor frame (101) is connected with the hydraulic scissor lifting platform (401), and the other part is connected with the driving motor (102); one end of the connecting sleeve (104) is connected with the driving motor (102), and the other end is connected with the intermediate driving gear (106) through the coupling key (103); the intermediate driving gear (106) and the passive idler (107) are both fixed on the hydraulic scissor lifting platform (401) through the deep groove ball bearing (105); the external large gear (108) is fixed with the bottom plate (509) of the fork forward moving part; the arc-shaped guide rail (110) is fixed on the hydraulic scissor lifting platform (401), and two arc-shaped guide rails (110) constitute a circle concentric with the center of the intermediate driving gear (106), three arc-shaped guide rail sliders (109) are uniformly distributed on the arc-shaped guide rail (110), and the arc-shaped guide rail (110) is connected with the bottom plate (509) of the fork forward moving part.

3. The structure of a forklift truck with rotating clamping forks according to claim 1, characterized in that: The turnover pressure stabilizing part is located on the front moving vehicle body (501) and can be divided into an ascending part and a turnover part, and a U-shaped plate (309) is connected to the ascending part and the turnover part.

4. The structure of a forklift truck with rotating clamping forks according to claim 3, characterized in that: The ascending part comprises a first motor, a motor connecting plate (302), a shaft coupling (303), a lead screw (304), a bearing seat (305), a lead screw sliding block, a guide rail (307), a guide rail sliding block and a U-shaped plate (309), the first motor is connected to the front moving vehicle body (501) through the motor connecting plate (302), and the output shaft of the first motor is connected to the lead screw (304) through the shaft coupling (303); the lead screw (304) is fixed to the front moving vehicle body (501) by two bearing seats (305); and the U-shaped plate (309) is connected to the lead screw sliding block and the guide rail sliding block.

5. The structure of a forklift truck with rotating clamping forks according to claim 3, characterized in that: The turnover part comprises a second motor (311), a shaft coupling (312), a rotating shaft (313), a connecting piece (314), a guide shaft (315), a guide plate (316), a turnover plate (317), a hex head bolt M8 (318), a hex head nut M8 (319) and a U-shaped plate (309); one side of the connecting piece (314) is connected to the turnover plate (317), and the other side is connected to the guide plate (316) through the rotating shaft (313) and the guide shaft (315); the second motor (311) is fixed to the U-shaped plate (309), and the second motor (311) is connected to the rotating shaft (313) through the shaft coupling (312).

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