Compact telescopic shifting fork mechanism

Abstract

The utility model provides a compact telescopic shifting fork mechanism. The compact telescopic shifting fork mechanism comprises a telescopic fork mechanism (1), a shifting fork mechanism (2) and a rack (3), the rack (3) comprises two vertical plates which are arranged in parallel; the two telescopic fork mechanisms (1) are symmetrically mounted on the two vertical plates; each telescopic fork mechanism (1) is fixed on a vertical plate through a telescopic fork driver (11), and a telescopic fork transmission assembly (12) is driven to operate to drive a telescopic fork body assembly (13) to do telescopic motion; the number of the shifting fork mechanisms (2) is four. Every two shifting fork mechanisms (2) form a group and are symmetrically arranged; each shifting fork mechanism (2) comprises a shifting fork drive (21), a shifting fork transmission assembly (22), a shifting fork body (23) and a fixing frame (24). The shifting fork driver (21) is fixed to the vertical plate, and power is transmitted to the shifting fork body (23) through the shifting fork transmission assembly (22), so that the shifting fork body (23) can rotate around the fixing frame (24).

Description

Technical Field

[0001] The utility model relates to the technical field of logistics transportation, in particular to a compact telescopic fork mechanism. Background Technique

[0002] The shuttle car can be divided into a lifting type shuttle car and a side extraction type shuttle car according to the structural form, and is respectively applied to different types of shuttle-type three-dimensional shelf storage systems.

[0003] The existing side extraction type shuttle car has a structure as Figure 1 shown, including a telescopic fork mechanism composed of a telescopic fork mechanism 1 and a fork mechanism 2, and a frame 3. The main structure of the telescopic fork mechanism 1 is composed of a telescopic fork drive motor and a telescopic fork body assembly. The telescopic fork body assembly adopts a three-stage structure of "inner fork + middle fork + outer fork", and is composed of an outer fork assembly, a middle fork assembly, and an inner fork assembly.

[0004] The drive motor of the telescopic fork mechanism is fixed at the bottom of the frame 3. The frame 3 can be the frame of the shuttle car body or a frame fixed on the frame of the shuttle car body. The outer fork assembly is fixed on the frame 3, the middle fork assembly is arranged on the track of the outer fork assembly, and the inner fork assembly is also arranged on the track of the outer fork assembly. Under the combined action of the drive of the telescopic fork drive motor and the chain drive assembly, the inner fork assembly and the middle fork assembly can move on the track of the outer fork assembly. Usually, the stroke and running speed of the inner fork assembly are designed to be twice that of the middle fork assembly.

[0005] The fork mechanism 2 is composed of a fork drive motor, a fork body, and a fork shaft. The fork drive motor and the fork shaft are fixedly embedded on the fork body of the inner fork assembly of the telescopic fork mechanism, and the fork body is installed on the fork shaft. Under the action of the fork drive motor, the fork body can rotate 90° around the fork shaft.

[0006] During operation, the shuttle car body travels on the shuttle car track. When it reaches the target cargo position beside the shelf, it stops moving forward. At this time, the telescopic fork mechanism 1 and the fork mechanism 2 cooperate to complete the goods picking until the goods are picked up. The working principle is as Figure 2 nucle Figure 3 shown, specifically as follows:

[0007] During operation, the shuttle car body travels on the shuttle car track 20. When it reaches the target cargo position beside the shelf 30, it stops moving forward. At this time, the telescopic fork mechanism 1 and the fork mechanism 2 cooperate to complete the goods picking until the goods are picked up. Specifically as follows:

[0008] The telescopic fork mechanism 1 operates: insert a set of telescopic fork body components into the gaps on both sides of the target storage location; then start the fork mechanism 2 to operate: rotate the two fork bodies of the fork by 90°, so that the fork bodies of the fork change from the vertical state to the horizontal state; subsequently, the telescopic fork mechanism 1 operates: retract the telescopic fork body components, and the goods 40 on the target storage location move to the shuttle car body together with the fork bodies of the fork.

[0009] The disadvantages of the above traditional telescopic fork mechanism are as follows:

[0010] 1) The "inner fork + middle fork + outer fork" three - level structure adopted by the telescopic fork body components of the telescopic fork mechanism 1 results in a relatively large thickness of the telescopic mechanism itself, thus requiring a relatively large spacing between adjacent storage locations on the shelf (the spacing between adjacent storage locations on the shelf ≥ inner fork thickness + middle fork thickness + shuttle car travel positioning accuracy + spacing allowance). According to statistics, the unilateral thickness of the traditional telescopic fork mechanism is generally between 60 mm and 80 mm. Considering factors such as the addressing and positioning accuracy of the shuttle car, the spacing between adjacent storage locations on the shelf needs to be increased relatively. Generally, the spacing between adjacent storage locations on the shelf is between 100 mm and 120 mm. If the spacing between adjacent storage locations on the shelf is too large, it will have a negative impact on the total storage capacity of the warehouse shelf.

[0011] 2) The fork mechanism 2 is all installed on the fork body of the inner fork component of the telescopic fork mechanism 1, resulting in mutual constraints in size between the fork mechanism 2 and the fork body of the inner fork component of the telescopic fork mechanism 1: If the size of the fork mechanism 2 (especially the fork drive motor) increases due to requirements (such as increasing power), the size of the fork body of the inner fork component of the telescopic fork mechanism 1 must be increased accordingly, and the spacing between adjacent storage locations on the shelf must also be increased accordingly, thereby having a negative impact on the total storage capacity of the warehouse shelf; if the size of the fork body of the inner fork component of the telescopic fork mechanism 1 remains unchanged, the size of the fork mechanism 2 cannot be increased, and the size of the fork drive motor of the fork mechanism 2 cannot be increased, resulting in the rated load capacity of the side - extraction type shuttle car being restricted. According to statistics, the rated load capacity of the current mainstream side - extraction type shuttle car is generally restricted to 50 kg (to a certain extent limited by the power and size of the fork drive motor). Content of the Utility Model

[0012] To improve the above - mentioned technical problems existing in the existing telescopic fork mechanism, the present utility model provides a compact telescopic fork mechanism. Compared with the traditional telescopic fork mechanism, this compact telescopic fork mechanism can overcome the drawback of mutual size constraints between the fork mechanism 2 and the fork body of the inner fork component of the telescopic fork mechanism 1, so that it can not only reduce the spacing between adjacent storage locations on the shelf (indirectly increasing the total storage capacity of the warehouse shelf), but also improve the rated load capacity of the side - extraction type shuttle car.

[0013] The purpose of the present utility model is achieved through the following technical solutions:

[0014] The present utility model provides a compact telescopic fork mechanism, which includes:

[0015] a telescopic fork mechanism, a fork mechanism and a frame;

[0016] The frame includes a chassis and two vertical plates arranged in parallel on the chassis;

[0017] There are two telescopic fork mechanisms, symmetrically installed on the two vertical plates of the frame; each telescopic fork mechanism includes: a telescopic fork drive, a telescopic fork transmission component and a telescopic fork body component; the telescopic fork drive is fixed on the vertical plate of the frame, driving the telescopic fork transmission component to operate and driving the telescopic fork body component to perform telescopic motion;

[0018] There are a total of four fork mechanisms; every two fork mechanisms form a group and are symmetrically arranged; each fork mechanism includes: a fork drive, a fork transmission component, a fork body and a fixed frame; the fork drive is fixed on the vertical plate of the frame, and transmits power to the fork body through the fork transmission component, enabling the fork body to rotate around the fixed frame to realize the rotation of the fork body.

[0019] More preferably:

[0020] Two parallel first guide rails are horizontally arranged on the chassis; the telescopic fork mechanism can move horizontally along the first guide rails.

[0021] More preferably:

[0022] A second guide rail is longitudinally arranged on the chassis; the distance between the two vertical plates can be longitudinally adjusted along the second guide rail.

[0023] More preferably:

[0024] The telescopic fork transmission component includes a driving pulley, a synchronous belt, two end pulleys, two end gears and two tension pulleys;

[0025] The driving pulley is fixed on the output shaft of the telescopic fork drive and can be driven by the telescopic fork drive to rotate; the two end pulleys are respectively installed at both ends above the vertical plate of the frame through end shafts; the driving pulley synchronously drives the two end pulleys to rotate through the action of the synchronous belt and the tension pulleys; the end gears are coaxially installed on the end shafts with the end pulleys and rotate synchronously with the end pulleys; the end gears can mesh with the rack of the telescopic fork body component, enabling the telescopic fork body to move to complete telescopic linear motion.

[0026] More preferably:

[0027] The telescopic fork body component includes a telescopic fork body and a rack;

[0028] The fork mechanism is installed on the telescopic fork body;

[0029] A rack is fixed above the telescopic fork body and can mesh with the end gear of the transmission component; rollers are arranged below and cooperate with the first guide rail on the rack, enabling the telescopic fork body to move along the first guide rail to complete telescopic linear motion.

[0030] More preferably:

[0031] The telescopic fork body is provided with a plurality of weight-reducing holes.

[0032] More preferably:

[0033] The fork transmission component includes a main friction wheel and a secondary friction wheel;

[0034] The main friction wheel of the fork transmission component is fixed on the output shaft driven by the fork; the main friction wheel meshes with the secondary friction wheel; the secondary friction wheel is connected to the fork body of the telescopic fork through a connecting shaft; an inner bearing ring is arranged on the connecting shaft, and the fixing frame is installed on the connecting shaft through a built-in bearing and cooperates with the inner bearing ring; the fixing frame is fixed on the telescopic fork body of the telescopic fork body component, enabling the fork body to rotate around the fixing frame.

[0035] It can be seen from the technical solution of the present utility model described above that, compared with the traditional telescopic fork structure, the present utility model has the following technical effects:

[0036] In the present utility model, instead of fixing the fork driving motor of the fork mechanism on the fork body of the inner fork component of the telescopic fork mechanism as in the prior art, the driving motor of the fork mechanism is installed at a fixed position on the rack. Such a structure enables the driving motor of the fork mechanism not to move together with the telescopic fork of the telescopic fork mechanism, does not occupy the space of the telescopic fork, and does not affect the size of the telescopic fork; correspondingly, the power and size of the driving motor of the fork mechanism are not limited by the size of the telescopic fork. Thus, it can be seen that the present utility model can not only reduce the spacing between adjacent storage positions on the shelf (indirectly increasing the total storage capacity of the warehouse shelf), but also improve the rated load capacity of the lateral picking shuttle car.

[0037] In addition, the telescopic fork mechanism in the present utility model adopts a gear-rack first-level transmission form, which can reduce the thickness of the telescopic fork body and further reduce the spacing between adjacent storage positions on the shelf. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 is a schematic structural diagram of a traditional lateral picking shuttle car;

[0039] Figure 2 is a top view schematic diagram of the lateral picking shuttle car in a parked state;

[0040] Figure 3 is a top view schematic diagram of the lateral picking shuttle car in a goods-taking state;

[0041] Figure 4 This is the overall structure diagram of the compact telescopic fork mechanism of the present utility model;

[0042] Figure 5 This is the structural schematic diagram of the telescopic fork mechanism of the present utility model in the state where the telescopic fork body extends;

[0043] Figure 6 This is the structural schematic diagram of the telescopic fork body assembly of the present utility model;

[0044] Figure 7 This is the structural schematic diagram of the fork mechanism of the present utility model.

[0045] Reference numerals:

[0046] Telescopic fork mechanism 1; telescopic fork drive 11, telescopic fork transmission assembly 12, telescopic fork body assembly 13; driving pulley 121, synchronous belt 122, end pulley 123, end gear 124, tension pulley 125; telescopic fork body 131, rack 132; fork mechanism 2; fork drive 21, fork transmission assembly 22, fork body 23, fixed bracket 24; frame 3; shuttle track 20, shelf 30, goods 40. Detailed implementation manners

[0047] To make the technical solution of the present utility model clearer, the present utility model will be described in detail below with reference to the drawings.

[0048] The present utility model provides a compact telescopic fork mechanism, the structure of which is as shown in Figure 4 and Figure 5 This compact telescopic fork mechanism includes: two telescopic fork mechanisms 1, four fork mechanisms 2 and a frame 3.

[0049] The frame 3 includes a chassis and two vertical plates arranged in parallel on the chassis;

[0050] There are two telescopic fork mechanisms 1, which are symmetrically installed on the two vertical plates of the frame 3; each telescopic fork mechanism 1 includes: a telescopic fork drive 11, a telescopic fork transmission assembly 12 and a telescopic fork body assembly 13; the telescopic fork drive 11 is fixed on the vertical plate of the frame 3, and drives the telescopic fork transmission assembly 12 to operate to drive the telescopic fork body assembly 13 to perform telescopic movement;

[0051] There are a total of four fork mechanisms 2; every two fork mechanisms 2 form a group and are symmetrically arranged; each fork mechanism 2 includes: a fork drive 21, a fork transmission assembly 22, a fork body 23, and a fixed bracket 24; the fork drive 21 is fixed on the vertical plate of the frame 3, and transmits power to the fork body 23 through the fork transmission assembly 22, so that the fork body 23 can rotate around the fixed bracket 24 to realize the rotation of the fork body 23.

[0052] The functions and detailed structures of each component are as follows:

[0053] Frame 3:

[0054] The frame 3 includes a chassis and two vertical plates arranged in parallel on the chassis. Two parallel first guide rails are transversely arranged on the chassis, and a second guide rail is longitudinally arranged, where the first guide rail cooperates with the telescopic fork mechanism 1, and the telescopic fork mechanism 1 can move transversely along the first guide rail; the second guide rail cooperates with the vertical plates, and the distance between the two vertical plates can be adjusted longitudinally along the vertical plates.

[0055] Telescopic fork mechanism 1:

[0056] There are two telescopic fork mechanisms 1, which are symmetrically installed on the two vertical plates of the frame 3.

[0057] The structure of each telescopic fork mechanism 1 is as Figure 5 shown, and all include: a telescopic fork drive 11, a telescopic fork transmission assembly 12, and a telescopic fork body assembly 13.

[0058] The telescopic fork drive 11 is fixed on the vertical plate of the frame 3.

[0059] The telescopic fork transmission assembly 12 includes a driving pulley 121, a synchronous belt 122, two end pulleys 123, two end gears 124, and two tension pulleys 125. The driving pulley 121 is fixed on the output shaft of the telescopic fork drive 11 and can be driven by the telescopic fork drive 11 to rotate; the two end pulleys 123 are respectively installed at both ends above the vertical plate of the frame 3 through end shafts; the driving pulley 121 synchronously drives the two end pulleys 123 to rotate through the action of the synchronous belt 122 and the tension pulleys 125; the end gears 124 are coaxially installed on the end shafts with the end pulleys 123 and rotate synchronously with the end pulleys 123. The end gear 124 can mesh with the rack 132 of the telescopic fork body assembly 13.

[0060] The structure of the telescopic fork body assembly 13 is as Figure 6 shown, and includes a telescopic fork body 131 and a rack 132.

[0061] The telescopic fork body 131 is a rectangular plate, and installation grooves are reserved on the telescopic fork body 131 for installing the fork mechanism 2. A rack 132 is fixed above the telescopic fork body 131 and can mesh with the end gear 124 of the telescopic fork transmission assembly 12; rollers are arranged below, which cooperate with the first guide rail on the frame 3 and can make the telescopic fork body 131 move along the first guide rail.

[0062] The above-mentioned telescopic fork body 131 is also provided with a plurality of weight-reducing holes.

[0063] During operation, the telescopic fork drive 11 is energized and rotates, driving the telescopic fork transmission assembly 12 to operate; through the action of the synchronous belt 122 and the tension pulley 125, the telescopic fork transmission assembly 12 is driven by the driving pulley 121 to rotate the end pulley 123, and the end pulley 123 drives the end gear 124 installed together on the end shaft to rotate; the rotation of the end gear 125 drives the rack 132 engaged with it to move linearly, and the fork body 131 moves along the first guide rail together with the rack 132, so that the telescopic fork body assembly 13 can complete the telescopic linear motion.

[0064] Fork shifting mechanism 2:

[0065] There are four fork shifting mechanisms 2 in total. Every two fork shifting mechanisms 2 form a group and are symmetrically arranged.

[0066] The structure of each fork shifting mechanism 2 is as Figure 7 shown, including: fork shifting drive 21, fork shifting transmission assembly 22, fork shifting fork body 23, and fixed bracket 24.

[0067] The fork shifting transmission assembly 22 consists of a main friction wheel and a secondary friction wheel.

[0068] The fork shifting drive 21 and the main friction wheel in the fork shifting transmission assembly 22 are fixed on the vertical plate of the frame 3. The secondary friction wheel, fork shifting fork body 23, and fixed bracket 24 in the fork shifting transmission assembly 22 are fixed on the telescopic fork body 131.

[0069] Since the fork shifting drive 21 is installed at a fixed position on the vertical plate of the frame 3, it does not move together with the telescopic fork of the telescopic fork mechanism 1, does not occupy the space of the telescopic fork, and does not affect the size of the telescopic fork.

[0070] The main friction wheel of the fork shifting transmission assembly 22 is fixed on the output shaft of the fork shifting drive 21; the main friction wheel meshes with the secondary friction wheel; the secondary friction wheel and the fork shifting fork body 23 are fixed on the same connecting shaft, which can ensure that the fork shifting fork body 23 rotates together with the secondary friction wheel; a bearing inner ring is arranged on the connecting shaft, and the fixed bracket 24 is installed on the connecting shaft through an internal bearing and cooperates with the bearing inner ring; the fixed bracket 24 is fixed on the telescopic fork body 131 of the telescopic fork body assembly 13, which can ensure that the fork shifting fork body 23 rotates around the fixed bracket 24.

[0071] The fork shifting drive 21 is energized and rotates, driving the main friction wheel of the fork shifting transmission assembly 22 to rotate, and the rotation of the main friction wheel drives the secondary friction wheel to rotate; the rotation of the secondary friction wheel drives the fork shifting fork body 23 to rotate around the fixed bracket 24 through the connecting shaft, thus realizing the rotation of the fork shifting fork body 23.

[0072] After preliminary design, the rated load of the side-picking shuttle vehicle equipped with the compact telescopic fork mechanism of the present utility model is 70 kg, the thickness of the telescopic fork mechanism is 30 mm, and the adjacent cargo space distance of the matching shelf is 60 mm. In contrast, the rated load of the same type of traditional side-picking shuttle vehicle is 50 kg, the thickness of the telescopic fork mechanism is 60 mm, and the adjacent cargo space distance of the matching shelf is between 100 mm and 120 mm.

[0073] In the present utility model, the fork driving motor of the fork mechanism is not fixed on the fork body of the inner fork assembly of the telescopic fork mechanism as in the prior art, but the driving motor of the fork mechanism is installed at a fixed position on the frame. Such a structure enables the driving motor of the fork mechanism not to move with the telescopic fork of the telescopic fork mechanism, does not occupy the space of the telescopic fork, and does not affect the size of the telescopic fork; correspondingly, the power and size of the driving motor of the fork mechanism are not limited by the size of the telescopic fork. It can be seen that the present utility model can not only reduce the adjacent cargo space distance of the shelf (indirectly increasing the total storage capacity of the warehouse shelf), but also increase the rated load of the side-picking shuttle vehicle.

[0074] In addition, the telescopic fork mechanism in the present utility model adopts a gear-rack primary transmission form, which can reduce the thickness of the telescopic fork body and further reduce the adjacent cargo space distance of the shelf.

[0075] Although the present utility model has been described in detail above in conjunction with the preferred embodiments of the present utility model, those skilled in the art should understand that the above embodiments are only explanations of the illustrative implementation modes of the present utility model, and do not limit the scope of the present utility model. The details in the embodiments do not constitute a limitation to the scope of the present utility model. Without departing from the spirit and scope of the present utility model, any obvious changes such as equivalent transformations and simple substitutions based on the technical solution of the present utility model fall within the protection scope of the present utility model.

Claims

1. A compact telescopic fork mechanism, characterized in that, The described compact telescopic fork mechanism includes: A telescopic fork mechanism (1), a fork mechanism (2), and a frame (3); The frame (3) includes two vertically arranged vertical plates; There are two telescopic fork mechanisms (1), symmetrically installed on the two vertical plates of the frame (3); each telescopic fork mechanism (1) includes: a telescopic fork drive (11), a telescopic fork transmission assembly (12), and a telescopic fork body assembly (13); the telescopic fork drive (11) is fixed on the vertical plate of the frame (3), driving the telescopic fork transmission assembly (12) to operate and driving the telescopic fork body assembly (13) to perform telescopic motion; There are a total of four fork mechanisms (2); every two fork mechanisms (2) form a group and are symmetrically arranged; each fork mechanism (2) includes: a fork drive (21), a fork transmission assembly (22), a fork body (23), and a fixing bracket (24); the fork drive (21) is fixed on the vertical plate of the frame (3), and transmits power to the fork body (23) through the fork transmission assembly (22), enabling the fork body (23) to rotate around the fixing bracket (24) to achieve the rotation of the fork body (23).

2. The compact telescopic fork mechanism according to claim 1, wherein: There are two parallel first guide rails horizontally arranged on the frame (3); the telescopic fork mechanism (1) can move horizontally along the first guide rails.

3. The compact telescopic fork mechanism according to claim 1, wherein: There is a second guide rail longitudinally arranged on the frame (3); the distance between the two vertical plates can be adjusted longitudinally along the second guide rail.

4. The compact telescopic fork mechanism according to claim 1, wherein: The telescopic fork transmission assembly (12) includes a driving pulley (121), a synchronous belt (122), two end pulleys (123), two end gears (124), and two tension pulleys (125); The driving pulley (121) is fixed on the output shaft of the telescopic fork drive (11) and can be driven by the telescopic fork drive (11) to perform rotational motion; the two end pulleys (123) are respectively installed at both ends above the vertical plate of the frame (3) through end shafts; the driving pulley (121) synchronously drives the two end pulleys (123) to rotate through the synchronous belt (122) and the tension pulleys (125); the end gears (124) are coaxially installed on the end shafts with the end pulleys (123) and rotate synchronously with the end pulleys (123); the end gears (124) can mesh with the rack (132) of the telescopic fork body assembly (13), enabling the telescopic fork body (131) to move to complete telescopic linear motion.

5. The compact telescopic fork mechanism according to claim 1, wherein: The telescopic fork body assembly (13) includes a telescopic fork body (131) and a rack (132); The fork mechanism (2) is installed on the telescopic fork body (131); A rack (132) is fixed above the telescopic fork body (131), which can be engaged with the end gear (124) of the transmission component (12); rollers are arranged below, which are matched with the first guide rail on the rack (3), so that the telescopic fork body (131) can move along the first guide rail to complete the telescopic linear motion.

6. The compact telescopic fork mechanism according to claim 5, characterized in that: The telescopic fork body (131) is provided with a plurality of weight reduction holes.

7. The compact telescopic fork mechanism according to claim 1, characterized in that: The fork transmission component (22) includes a main friction wheel and a secondary friction wheel; The main friction wheel of the fork transmission component (22) is fixed on the output shaft of the fork drive (21); the main friction wheel is engaged with the secondary friction wheel; the secondary friction wheel is connected to the fork body (23) through a connecting shaft; a bearing inner ring is arranged on the connecting shaft, and the fixing frame (24) is installed on the connecting shaft through an internal bearing and is matched with the bearing inner ring; the fixing frame (24) is fixed on the telescopic fork body (131) of the telescopic fork body assembly (13), so that the fork body (23) can rotate around the fixing frame (24).

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