A three-way stacking forklift bridge frame structure

Abstract

A three-way stacking forklift bridge frame structure includes: a space enclosed by a rear vertical plate, side vertical plates, and a center vertical plate for installing a side shift motor and a sub-gantry; an installation space enclosed by side plates, an upper transverse plate, a lower transverse plate, a front vertical plate, a center plate, a first sealing plate, and a second sealing plate for installing a drive device for rotating the forks; a bridge lower support plate and a bridge lower support plate for installing a fork drive shaft; side vertical plates are installed with rollers and side rollers along the sub-gantry lifting track; the rear vertical plate is installed as close as possible to the upper end of the side vertical plate, and the plate surfaces of the rear vertical plate and the side vertical plates are machined with weight-reducing holes; the ends of the side vertical plates on both sides are fixed to the encoder connecting plate; the lower plate surface of the lower transverse plate is fixed with a locking mechanism for offsetting the shaking force generated by the forklift operation. The advantages are as follows: simple structure, high structural strength, low structural weight, uniform force, and no force deformation of the plate surface will occur during the lifting of the bridge.

Description

Technical Field

[0001] The invention relates to the technical field of forklift handling equipment, in particular to a three-way stacking forklift bridge frame structure. Background Art

[0002] Forklifts are the most widely used handling and stacking tools in the logistics industry. Demand for standard pallet stacking, particularly high-mast narrow-aisle forklifts, known as manned three-way stacking forklifts, is increasing rapidly, with a clear growth trend. These forklifts can replace rail-mounted stackers in spaces under 17.5 meters, offering high efficiency, additional picking capabilities, and relatively low costs, resulting in a highly cost-effective solution. A forklift consists of a sub-mast, bridge frame, fork carriage, and forks. These structures are fixed in sequence, with the bridge frame lifting via the sub-mast. The forks and fork carriage need to rotate a certain angle during handling, requiring the bridge structure to not only control weight but also meet strength requirements.

[0003] The present invention provides a three-way stacking forklift bridge frame structure to solve the above technical problems. Summary of the Invention

[0004] A three-way stacking forklift bridge frame structure includes a rear vertical plate, side vertical plates, side plates, an upper transverse plate, a lower transverse plate, and a front vertical plate. The side vertical plates are fixed on both sides of the rear vertical plate, and the two side vertical plates are fixedly connected to one side plate. The upper transverse plate and the lower transverse plate are directly or indirectly fixed to the side vertical plates, and the upper and lower end faces of the front vertical plate are directly or indirectly fixed to the upper transverse plate and the side plates respectively.

[0005] Preferably, the three-way stacking forklift bridge frame structure also includes a neutral plate, the side panel surface of the neutral plate is fixed to the side panel surfaces on both sides, and the lower end surface of the neutral plate is fixed to the lower cross plate surface; wiring holes are provided on both sides of the neutral plate.

[0006] Preferably, the three-way stacking forklift bridge frame structure also includes an upper pad, the lower plate surface of the upper pad is fixed to the upper end surface of the neutral plate and the upper end surface of the front plate, and the upper plate surface of the upper pad is fixed to the lower plate surface of the upper cross plate.

[0007] Preferably, in the three-way stacking forklift bridge frame structure, the plate surface of the upper cross plate is processed with a drive motor mounting hole and / or a transmission gear mounting hole and / or a first drive shaft mounting hole. When the plate surface of the upper cross plate is processed with the first drive shaft mounting hole, it also includes a bridge lower support plate, the bridge lower support plate is fixed between the two side plates, the lower end surface of the front vertical plate is fixed to the side plates and the plate surface of the bridge lower support plate, the bridge lower support plate is processed with a second drive shaft mounting hole in a concentric position with the first drive shaft mounting hole, the first drive shaft mounting hole and the second drive shaft mounting hole are used for installing the drive shaft, the drive motor mounting hole is used for installing the drive shaft drive device, the gear at the power output end of the drive device transmits power to the drive shaft through the transmission gear installed in the transmission gear mounting hole, and the drive shaft is used to connect the fork frame and the fork to realize the rotation of the fork.

[0008] Preferably, in the three-way stacking forklift bridge frame structure, a locking mechanism is fixed to the lower plate surface of the lower cross plate, and the locking mechanism includes two limit shaft mounting plates with limit shaft assembly holes, and the spring limit shaft is arranged between the two limit shaft mounting plates, and the shaking force is offset by the engagement of the spring limit shaft with the notch of the limit plate.

[0009] Preferably, the three-way stacking forklift bridge frame structure also includes a first sealing plate and a second sealing plate. The first sealing plate is fixedly connected to the upper pad, the side plate on the first side, and the front vertical plate respectively. The second sealing plate is detachably fixed to seal the opening of the cavity enclosed by the upper pad, the side plate on the second side, and the front vertical plate.

[0010] Preferably, in the three-way stacking forklift bridge frame structure, a threaded block is fixed to the upper surface of the upper horizontal plate or / and the side plate surface of the second side, the threaded block on the upper surface of the upper horizontal plate is used to fix the upper cover, and the threaded block on the side plate surface of the second side is used to fix the second sealing plate.

[0011] Preferably, in the three-way stacking forklift bridge frame structure, two or more rollers arranged vertically are provided on the inner side of the side plate and the rollers are placed in a lifting and moving track, and the force-bearing sides of the multiple rollers on the same side plate are different.

[0012] Preferably, in the three-way stacking forklift bridge frame structure, the upper and lower end faces of the side vertical plates are both processed with surface roller avoidance grooves, and side rollers are installed in the roller avoidance grooves, and the side rollers move along the panel of the lifting and moving track.

[0013] Preferably, the three-way stacking forklift bridge frame structure also includes a drag chain connecting plate and an encoder connecting plate, the drag chain connecting plate is connected to the upper horizontal plate and the side vertical plate on one side; the two ends of the encoder connecting plate are respectively fixed to the side vertical plates on both sides; the rear vertical plate is installed at the upper position of the side vertical plate; the rear vertical plate, side vertical plate and side plate are all processed with weight-reducing holes to reduce the oil cylinder pressure on the sub-gantry in the bridge.

[0014] Working principle:

[0015] The bridge frame provides a flat installation space frame structure, inside which two sets of drive mechanisms are installed. One set of side shift drive structures is used to drive the bridge frame, fork frame, fork and cargo to move horizontally on the specific track of the forklift's inner slide, and the other set of rotary power mechanisms is used to connect the fork frame and the fork to rotate within a range of 180° along the axis to achieve a 180° rotation of the fork. At the same time, the bridge frame system can also be installed with various other functional accessories to achieve the connection between the bridge frame and the inner slide. The auxiliary door frame and the side shift motor are placed in the space enclosed by the rear vertical plate, the side vertical plate and the middle vertical plate, and grooved slide rails are arranged on both sides of the auxiliary door frame. The rollers on the inner sides of the side vertical plates in the bridge frame are placed in the grooved slide rails and guided to rise and fall along the space between the limiting surfaces on both sides of the grooved slide rail 17. During the lifting process, the force bearing surface of at least one roller in the vertical direction and the grooved slide rail is on the right side, and the force bearing surface of at least another roller and the grooved slide rail is on the left side. At the same time, the side roller moves along the slide rail surface of the grooved slide rail to realize the lifting and guiding movement of the bridge frame; the rotary power motor is placed in the inner cavity enclosed by the side plates, the upper horizontal plate, the lower horizontal plate, the front vertical plate, the first sealing plate and the second sealing plate, driving the drive shaft to rotate, thereby realizing the rotation of the fork.

[0016] The advantages are as follows:

[0017] (1) The three-way stacking forklift bridge frame structure of the present invention is formed by welding and fixing necessary plates to form a bridge structure, which simplifies the structure while meeting the requirements of bridge strength;

[0018] (2) The simplification of the three-way stacking forklift bridge frame structure and the provision of weight-reducing holes can reduce the weight of the bridge;

[0019] (3) The three-way stacking forklift bridge frame structure of the present invention is subjected to uniform stress, and the position setting of the side vertical plates and the rear vertical plates can avoid stress deformation of the structure during the lifting process; BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The specific implementation is further described below with reference to the accompanying drawings, wherein:

[0021] Figure 1 、 2 This is a schematic diagram of a three-way stacking forklift bridge frame structure according to the present invention;

[0022] Figure 3 yes Figure 1 Schematic plan view of the position of the middle roller and the grooved track;

[0023] The specific structure corresponding to the number is as follows:

[0024] Rear vertical plate 1, side vertical plate 2, roller 21, roller avoidance groove 22, side plate 3, upper horizontal plate 4, motor mounting hole 41, transmission gear mounting hole 42, first drive shaft mounting hole 43, lower horizontal plate 5, front vertical plate 6, upper pad 7, neutral plate 8, wiring hole 81, thread block 9, bridge lower support plate 10, second drive shaft mounting hole 101, encoder connecting plate 11, locking mechanism 12, first sealing plate 13, second sealing plate 14, weight reduction hole 15, drag chain connecting plate 16, grooved slide rail 17,

[0025] The following specific embodiments will further illustrate the present invention in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0026] Specific implementation case 1:

[0027] A three-way stacking forklift bridge frame structure includes: a rear vertical plate 1, a side vertical plate 2, a side plate 3, an upper transverse plate 4, a lower transverse plate 5, and a front vertical plate 6. The side vertical plates 2 are fixed on both sides of the rear vertical plate 1, and the two side vertical plates 2 are fixedly connected to one side plate 3. The upper transverse plate 4 and the lower transverse plate 5 are directly or indirectly fixed to the side vertical plate 2. The upper and lower end faces of the front vertical plate 6 are directly or indirectly fixed to the upper transverse plate 4 and the side plate 3 respectively.

[0028] Furthermore, it also includes a neutral plate 8, the side plate surface of the neutral plate 8 is fixed to the plate surfaces of the side plates 3 on both sides, and the lower end surface of the neutral plate 8 is fixed to the plate surface of the lower transverse plate 5.

[0029] Furthermore, it also includes an upper pad 7, the lower plate surface of the upper pad 7 is fixed to the upper end surface of the neutral plate 8 and the upper end surface of the front plate 6, and the upper plate surface of the upper pad 7 is fixed to the lower plate surface of the upper horizontal plate 4.

[0030] Furthermore, the surface of the upper horizontal plate 4 is processed with a drive motor mounting hole 41, a transmission gear mounting hole 42, and a first drive shaft mounting hole 43, and also includes a bridge lower support plate 10, the bridge lower support plate 10 is fixed between the two side plates 3, the lower end surface of the front vertical plate 6 is fixed to the side plate 3 and the surface of the bridge lower support plate 10, the bridge lower support plate 10 is processed with a second drive shaft mounting hole 101 in a concentric position with the first drive shaft mounting hole 43, the first drive shaft mounting hole 43 and the second drive shaft mounting hole 101 are used to install the drive shaft, the drive motor mounting hole 41 is used to install the drive shaft drive device, the gear at the power output end of the drive device transmits power to the drive shaft through the transmission gear installed in the transmission gear mounting hole 42, and the drive shaft is used to connect the fork frame and the fork to realize the rotation of the fork.

[0031] Furthermore, an encoder connecting plate 11 is included, and both ends of the encoder connecting plate 11 are respectively fixed to the side vertical plates 2 on both sides to improve the installation strength of the side vertical plates 2 on both sides.

[0032] Furthermore, a locking mechanism 12 is fixed to the lower plate surface of the lower cross plate 5, and the locking mechanism 12 includes two limit shaft mounting plates with limit shaft assembly holes. A spring limit shaft (existing technology, not described in detail here) is arranged between the two limit shaft mounting plates (not drawn in the figure). Through the engagement of the spring limit shaft with the notch of the limit plate, the shaking force during the operation of the fork can be partially offset by the spring limit shaft, thereby meeting the requirement of stable operation of the fork.

[0033] Furthermore, it also includes a first sealing plate 13 and a second sealing plate 14. The first sealing plate 13 is fixedly connected to the upper pad 7, the side plate 3 on the first side, and the front vertical plate 6 respectively. The second sealing plate 14 is detachably fixed to seal the opening of the cavity enclosed by the upper pad 7, the side plate 3 on the second side, and the front vertical plate 6.

[0034] Furthermore, a threaded block 9 is fixed to the upper surface of the upper horizontal plate 4 and / or the surface of the side plate 3 on the second side. The threaded block 9 on the upper surface of the upper horizontal plate 4 is used to fix the upper cover, and the threaded block 9 on the surface of the side plate 3 on the second side is used to fix the second sealing plate 14.

[0035] Furthermore, two or more rollers 21 arranged vertically are provided on the inner side of the side plate 2 and the rollers 21 are placed in a lifting and moving track. The force-bearing sides of the multiple rollers 21 of the same side plate 2 are different. For example, when the sub-gantry is placed in the space enclosed by the two side plates 2, the rear plate 1 and the middle plate 8 in the bridge frame and moves along the groove track of the sub-gantry, the rolling force surfaces of the vertically arranged rollers 21 on the same side are rolling contact surfaces on different sides, ensuring operational stability and linearity.

[0036] Furthermore, the upper and lower end surfaces of the side vertical plate 2 are processed with surface roller avoidance grooves 22, and side rollers are installed in the roller avoidance grooves 22. The side rollers move along the panel of the lifting and moving track.

[0037] Specific implementation case 2:

[0038] Optionally, the rear vertical panel 1 is installed in an upper position among the side vertical panels 2. During the lifting process of the bridge, the side rollers will be subjected to outward forces when moving along the panels of the lifting track. The lower part of the side vertical panel 2 has many connections and high strength, but the structural strength of the upper part of the side vertical panel 2 is relatively low. Therefore, the upper part will be deformed into an eight-shaped shape due to the outward force. When the rear vertical panel 1 is installed in an upper position, the deformation resistance of the structure above the side vertical panel 2 can be improved.

[0039] Optionally, the rear vertical plate 1, the side vertical plate 2, and the side plate 3 are all processed with weight-reducing holes 15 to reduce the oil cylinder pressure on the auxiliary portal frame in the bridge.

[0040] Optionally, a drag chain connecting plate 16 is further included, wherein the drag chain connecting plate 16 is connected to the upper horizontal plate 5 and the side vertical plate 2 on one side, and the drag chain connecting plate 16 is used to fix the tank chain.

[0041] Optionally, wiring holes 81 are provided on both sides of the neutral plate 8 for cables to pass through.

[0042] Other technical solutions are partially or completely the same as those in specific implementation case 1.

[0043] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A three-way stacking forklift bridge frame structure, characterized by: The slats are connected to the upper and lower panels of the front panel, and the slats are connected to the lower and upper panels of the front panel respectively. The lower plate surface of the upper pad is fixed to the upper end surface of the neutral plate and the upper end surface of the front plate, and the upper plate surface of the upper pad is fixed to the lower plate surface of the upper cross plate; the plate surface of the upper cross plate is processed with a drive motor mounting hole and / or a transmission gear mounting hole and / or a first drive shaft mounting hole. When the plate surface of the upper cross plate is processed with a first drive shaft mounting hole, it also includes a bridge frame lower support plate, and the bridge frame lower support plate is fixed between the two side plates, and the lower end surface of the front plate is fixed to the side plates and the plate surface of the bridge frame lower support plate, and the bridge frame lower support plate is processed with the first drive The second drive shaft mounting hole is located concentrically with the shaft mounting hole. The first drive shaft mounting hole and the second drive shaft mounting hole are used to mount the drive shaft. The drive motor mounting hole is used to mount the drive shaft drive device. The gear at the power output end of the drive device transmits power to the drive shaft through the transmission gear installed in the transmission gear mounting hole. The drive shaft is used to connect the fork frame and the fork to realize the rotation of the fork. A locking mechanism is fixed on the lower plate surface of the lower cross plate. The locking mechanism includes two limit shaft mounting plates with limited shaft assembly holes. The spring limit shaft is set on the two limit plates. The shaking force is offset by the engagement between the spring limiting shaft and the notch of the limiting plate between the shaft mounting plates; it also includes a first sealing plate and a second sealing plate, the first sealing plate being fixedly connected to the upper pad, the side plate on the first side and the front vertical plate respectively, and the second sealing plate being detachably fixed to seal the opening of the cavity enclosed by the upper pad, the side plate on the second side and the front vertical plate; a threaded block is fixed to the upper surface of the upper horizontal plate and / or the plate surface of the side plate on the second side, the threaded block on the upper surface of the upper horizontal plate is used to fix the upper cover, and the threaded block on the plate surface of the side plate on the second side is used to fix the second sealing plate.

2. A three-way stacking forklift bridge frame structure as claimed in claim 1, characterized in that: Two or more rollers arranged vertically are provided on the inner side of the side vertical plate and the rollers are placed in a lifting and moving track. The force-bearing sides of the multiple rollers on the same side vertical plate are different.

3. A three-way stacking forklift bridge frame structure as claimed in claim 1, characterized in that: The upper and lower end surfaces of the side vertical plates are both processed with surface roller avoidance grooves, and side rollers are installed in the roller avoidance grooves. The side rollers move along the panel of the lifting and moving track.

4. A three-way stacking forklift bridge frame structure as claimed in claim 1, characterized in that: It also includes a drag chain connecting plate and an encoder connecting plate, the drag chain connecting plate is connected to the upper horizontal plate and the side vertical plate on one side; the two ends of the encoder connecting plate are respectively fixed to the side vertical plates on both sides; the rear vertical plate is installed at the upper position of the side vertical plate; the rear vertical plate, side vertical plate and side plate are all processed with weight-reducing holes to reduce the oil cylinder pressure on the sub-gantry in the bridge frame.

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