A telescopic fork capable of preventing grease from overflowing

Abstract

The utility model relates to a telescopic fork, concretely relates to an oil spill-preventing telescopic fork. Including mounting section, the mounting section is equipped with the middle section on the sliding, the middle section is equipped with the support section on the sliding, the both sides symmetry of support section and middle section are opened and have inlay groove, the both sides of inside of mounting section and middle section with every inlay groove corresponding position all transverse array rotation installation have a plurality of gyro wheel, the circumference side wall of gyro wheel and corresponding inlay groove top side and bottom side contact, the both ends of support section and middle section all are fixedly installed and have the baffle, the end of baffle blocks inlay groove, the outer end of inlay groove top side and bottom side is integrally formed with the fender. The utility model, by inlay groove side wall, fender and two end baffle jointly enclose the oil storage cavity, can collect and store the excess lubricating oil that spills from gyro wheel contact part, thereby play the role of preventing oil directly spills and pollutes equipment and environment.

Description

Technical Field

[0001] This utility model relates to a telescopic fork, specifically, to a telescopic fork that prevents grease spillage. Background Technology

[0002] Telescopic forks are multi-section (commonly three or four sections) material handling devices that store and retrieve goods by sliding and extending the sections sequentially. To ensure a smooth and stable telescopic process, they are usually equipped with a combination of rollers and embedded grooves. The core function of the rollers is to constrain each telescopic section to move only in a straight line along its designed path, thereby suppressing swaying, shaking, and jamming that are prone to occur during operation, and improving the rigidity and positioning accuracy of the equipment.

[0003] To address this issue, existing technologies typically include an oil drain hole at the bottom of the embedded groove. The main function of this structure is to provide a controllable cleaning channel during routine maintenance, allowing the accumulated lubricating oil to be safely discharged and collected, thereby preventing grease from overflowing from the groove end. However, the oil drain hole only solves the problem of directional discharge of accumulated oil and does not fundamentally improve the situation where lubricating oil easily overflows from the rollers and sliding groove moving parts.

[0004] In addition, when collecting lubricating oil through the drain hole, the operator needs to place the oil collection box 7 below the hole. In the existing technology, the oil collection box 7 is mostly fixed by magnetic attraction, lacking effective mechanical limit and stable support. This makes the oil collection box 7 very easy to shift or tilt when the equipment vibrates or the operator is careless, resulting in failure to collect oil and secondary pollution. It also reduces the efficiency and reliability of maintenance operations. Utility Model Content

[0005] The purpose of this invention is to provide a telescopic fork that prevents grease spillage, in order to solve the problems mentioned in the background art.

[0006] The drain hole only solves the problem of directional discharge of accumulated oil, but does not fundamentally improve the situation where lubricating oil easily overflows from the roller and sliding groove moving parts.

[0007] To address the above problems, the present invention aims to provide a telescopic fork that prevents grease spillage, comprising an installation section, an intermediate section slidably mounted on the installation section, and a support section slidably mounted on the intermediate section. The support section and the intermediate section have symmetrically arranged recessed grooves on both sides. Several rollers are laterally arrayed and rotatably mounted on both sides of the interior of the installation section and the intermediate section, corresponding to each recessed groove. The circumferential sidewalls of the rollers contact the top and bottom sides of the corresponding recessed grooves. A blocking plate is fixedly installed at both ends of the installation section and the intermediate section. The end of the embedded groove is sealed by a blocking plate. The outer ends of the top and bottom sides of the embedded groove are integrally formed with a retaining edge. The side wall of the embedded groove, the lower retaining edge, and the blocking plates at both ends together form an oil storage cavity. The oil storage cavity is used to temporarily store overflowing lubricating oil. The bottom of the embedded groove is provided with an oil drain hole that extends to the outside. The oil drain hole is internally threaded with a screw plug. A support mechanism is provided on the blocking plate at a position corresponding to each oil drain hole. When the oil collection box is placed below the oil drain hole, the support mechanism at the corresponding position limits and supports the oil collection box.

[0008] As a further improvement to this technical solution, the support mechanism includes two mounting brackets fixedly installed on the side of the end plate away from the inner groove. A connecting rod is rotatably connected between the two mounting brackets. Both ends of the connecting rod rotatably pass through the corresponding mounting brackets and are fixedly connected to rotating rods. A U-shaped frame is fixedly connected to the upper side wall of the rotating rod.

[0009] As a further improvement to this technical solution, the support mechanism also includes a gear coaxially fixedly connected to the connecting rod, a rack meshing above the gear, guide rails slidably mounted on both sides of the rack, one end of the guide rails being fixedly mounted on the end plate, and the other ends of the two guide rails being fixedly mounted on an end plate.

[0010] As a further improvement to this technical solution, the support mechanism also includes a lever frame fixedly installed on the upper side wall of the rack, the lever frame having a threaded rod threadedly connected to it, and one of the guide rails having two slots.

[0011] As a further improvement to this technical solution, when the end of the rack contacts the end plate, the position of the threaded rod corresponds to the position of one of the slots, and the rotating rod is in the unfolded state. When the end of the rack contacts the blocking plate, the position of the threaded rod corresponds to the other slot, and the rotating rod is in the retracted state. The rotating rod in the retracted state is located on the side of the blocking plate away from the inner groove.

[0012] As a further improvement to this technical solution, cylindrical blocks are fixedly connected to the middle positions on both sides of the oil receiving box. When the oil receiving box is placed below the oil drain hole, the upper side wall of the oil receiving box contacts the lower side wall of the middle section or support section. When the rotating rod is in the unfolded state, the two rotating rods contact the two sides of the oil receiving box respectively, and the circumferential side walls of the two cylindrical blocks contact the inner walls of the two U-shaped frames respectively.

[0013] As a further improvement to this technical solution, positioning blocks are fixedly connected to the upper sidewall of the oil receiving box near the four corners. Positioning holes are opened on the lower sidewall of the intermediate section and the support section at the positions corresponding to each positioning block. When the upper sidewall of the oil receiving box contacts the lower sidewall of the intermediate section or the support section, the positioning block is inserted into the corresponding positioning hole.

[0014] As a further improvement to this technical solution, several magnet blocks are embedded and fixedly installed in the upper side wall of the oil receiving box. The intermediate section and the support section are both made of ferromagnetic material. When the upper side wall of the oil receiving box contacts the lower side wall of the intermediate section or the support section, the magnet blocks are magnetically attracted to the intermediate section or the support section.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] 1. This telescopic fork designed to prevent grease spillage has an oil storage chamber formed by the inner groove sidewall, the side guard, and the end plates. This chamber can collect and temporarily store excess lubricating oil that spills from the roller contact area, thus preventing grease from directly spilling out and contaminating the equipment and the environment.

[0017] 2. This anti-grease spill telescopic fork, through the support mechanism set on the blocking plate, can rotate the lever to the extended state to lock the oil collection box when oil needs to be drained. It can limit and support the oil collection box from multiple horizontal and vertical directions, thereby ensuring that the oil collection box remains stable in position during the process of collecting lubricating oil, and can avoid affecting the normal telescopic operation of the fork by retracting it. Attached Figure Description

[0018] Figure 1 This is one of the overall structural schematic diagrams of this utility model;

[0019] Figure 2 This is the second schematic diagram of the overall structure of this utility model;

[0020] Figure 3 For the present utility model Figure 2 Enlarged view of the structure at point A in the middle;

[0021] Figure 4 This is a cross-sectional view of the overall structure of this utility model;

[0022] Figure 5This is one of the structural schematic diagrams of the intermediate section and support mechanism of this utility model combined with the oil receiving box;

[0023] Figure 6 This is a cross-sectional view of a portion of the structure of this utility model;

[0024] Figure 7 This is a structural schematic diagram of the intermediate section and support mechanism of this utility model;

[0025] Figure 8 This is a schematic diagram of the structure of the oil receiving box of this utility model;

[0026] Figure 9 This is the second schematic diagram of the structure of the intermediate section and support mechanism combined with the oil receiving box of this utility model;

[0027] Figure 10 This is a schematic diagram of the support mechanism of this utility model in its unfolded state;

[0028] Figure 11 This is a partial structural diagram of the support mechanism of this utility model.

[0029] The meanings of the labels in the diagram are as follows:

[0030] 1. Mounting section; 2. Intermediate section; 3. Support section; 4. Rollers;

[0031] 5. Embedded groove; 51. Edge retainer; 52. Oil drain hole; 53. Screw plug; 54. Positioning hole;

[0032] 6. Blocking plate;

[0033] 7. Oil receiving box; 71. Cylindrical block; 72. Positioning block; 73. Magnetic block;

[0034] 8. Support mechanism; 81. Mounting bracket; 82. Rotating rod; 821. U-shaped frame; 83. Connecting rod; 84. Gear; 85. Guide rail; 851. Slot; 86. Rack; 87. End plate; 88. Actuating bracket; 89. Threaded rod. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0036] Example 1

[0037] Please see Figure 1As shown, the purpose of this embodiment is to provide a telescopic fork that prevents grease spillage, including a mounting section 1, an intermediate section 2 slidably mounted on the mounting section 1, and a support section 3 slidably mounted on the intermediate section 2. The mounting section 1, the intermediate section 2, and the support section 3 together constitute a three-section telescopic fork. The mounting section 1 and the intermediate section 2 are both equipped with a chain drive structure. The motor in the chain drive mechanism is electrically connected to an external control device. The chain drive mechanism is used to drive the telescopic movement of the intermediate section 2 and the support section 3. The chain drive mechanism is a mature technology for three-section telescopic forks and will not be described in detail here.

[0038] To improve stability during the expansion and contraction process, refer to Figures 2-4 Embedded grooves 5 are symmetrically provided on both sides of the support section 3 and the intermediate section 2. Several rollers 4 are horizontally arrayed and rotatably installed on both sides of the installation section 1 and the intermediate section 2, corresponding to the positions of each embedded groove 5. The circumferential sidewalls of the rollers 4 contact the top and bottom sides of the corresponding embedded grooves 5. Through the cooperation between the rollers 4 and the embedded grooves 5, the intermediate section 2 can only slide along the extension direction of the installation section 1, and the support section 3 can only slide along the extension direction of the intermediate section 2, thereby suppressing the swaying and jamming of the support section 3 and the intermediate section 2 during the extension and retraction process.

[0039] To reduce the frictional resistance of the roller 4 moving in the inner groove 5, lubricating oil needs to be applied to the contact area between the roller 4 and the inner groove 5 regularly. To prevent the lubricating oil from overflowing and causing pollution, a blocking plate 6 is fixedly installed at both ends of the mounting section 1 and the intermediate section 2. The blocking plate 6 seals the end of the inner groove 5. The outer ends of the top and bottom sides of the inner groove 5 are integrally formed with a retaining edge 51. The side wall of the inner groove 5, the lower retaining edge 51, and the blocking plates 6 at both ends together form an oil storage cavity. The oil storage cavity is used to temporarily store the overflowing lubricating oil, which plays a role in initial sealing and collection.

[0040] To prevent excessive oil level in the oil reservoir from exceeding the flange 51 and causing overflow, refer to... Figures 5-7 An oil drain hole 52 extending to the outside is provided at the bottom of the embedded groove 5. A screw plug 53 is threaded inside the oil drain hole 52. Under normal circumstances, the screw plug 53 is tightened to keep the oil drain hole 52 closed. When it is observed that there is a lot of oil accumulated in the oil storage chamber and it needs to be cleaned, the operator first controls the intermediate section 2 and the support section 3 to extend completely, then moves the oil collection box 7 below the oil drain hole 52, and then slowly loosens the screw plug 53 with a wrench. At this time, the lubricating oil slowly flows into the oil collection box 7 along the gap between the screw plug 53 and the inner wall of the oil drain hole 52, realizing the controllable discharge and collection of lubricating oil.

[0041] To facilitate the stable positioning of the oil collection box 7 below the oil drain hole 52, refer to... Figure 8Positioning blocks 72 are fixedly connected to the upper sidewall of the oil receiving box 7 near the four corners. Positioning holes 54 are opened on the lower sidewall of the intermediate section 2 and the support section 3 at positions corresponding to each positioning block 72. At the same time, several magnet blocks 73 are embedded and fixedly installed in the upper sidewall of the oil receiving box 7. The intermediate section 2 and the support section 3 are both made of ferromagnetic material. When the operator removes the wrench and adjusts the position of the oil receiving box 7 so that the upper sidewall of the oil receiving box 7 contacts the lower sidewall of the intermediate section 2 or the support section 3, and the positioning blocks 72 are inserted into the corresponding positioning holes 54, the positioning blocks 72 and the positioning holes 54 cooperate to restrict the horizontal movement of the oil receiving box 7. The magnet blocks 73 are magnetically attracted to the intermediate section 2 or the support section 3. The attraction of the magnet blocks 73 attracts the oil receiving box 7 to the lower sidewall of the intermediate section 2 or the support section 3, thereby restricting its downward movement and realizing the rapid pre-fixation of the oil receiving box 7.

[0042] To further enhance the stability of the oil collection box 7 installation, a support mechanism 8 is provided on the block plate 6 at the position corresponding to each oil drain hole 52. When the oil collection box 7 is placed below the oil drain hole 52, the support mechanism 8 at the corresponding position limits and supports the oil collection box 7.

[0043] The structure of support mechanism 8 is detailed below, referring to... Figures 9-11 The support mechanism 8 includes two mounting brackets 81 fixedly installed on the side of the end plate 6 away from the inner groove 5. A connecting rod 83 is rotatably connected between the two mounting brackets 81. Both ends of the connecting rod 83 rotatably pass through the corresponding mounting brackets 81 and are fixedly connected to rotating rods 82. A U-shaped frame 821 is fixedly connected to the upper side wall of the rotating rod 82. The support mechanism 8 also includes a gear 84 coaxially fixedly connected to the connecting rod 83. A rack 86 is meshed above the gear 84. Guide rails 85 are slidably mounted on both sides of the rack 86. One end of the guide rail 85 is fixedly installed on the end plate 6, so that the rack 86 can only move along the extension direction of the guide rail 85. An end plate 87 is fixedly installed at the other end of the two guide rails 85. The end plate 87 and the end plate 6 cooperate to constrain the movement path of the rack 86.

[0044] The support mechanism 8 also includes an L-shaped actuating frame 88 fixedly mounted on the upper side wall of the rack 86. A threaded rod 89 is threadedly connected to the actuating frame 88. A knob is coaxially fixed at the end of the threaded rod 89 away from the rack 86. Two slots 851 are opened on one of the guide rails 85. The two slots 851 are respectively located near the two ends of the guide rail 85. When the end of the rack 86 contacts the end plate 87, the gear 84 rotates and drives the rotating rod 82 to rotate to the unfolded state. At this time, the position of the threaded rod 89 corresponds to the position of one of the slots 851. The operator rotates the threaded rod 89 so that the threaded rod 89 is inserted into the corresponding slot 851 along its own axis, which restricts the rack 86 from moving along the extension direction of the guide rail 85. The rack 86 restricts the rotation of the gear 84, the connecting rod 83 and the two rotating rods 82, thereby locking the rotating rod 82 in the unfolded state.

[0045] Cylindrical blocks 71 are fixedly connected to the middle positions on both sides of the oil receiving box 7. When the oil receiving box 7 is pre-fixed to the lower side wall of the intermediate section 2 or the support section 3, and the rotating rod 82 is in the unfolded state, the two rotating rods 82 contact the two sides of the oil receiving box 7 respectively, restricting the oil receiving box 7 from moving horizontally towards or away from the intermediate section 2. The circumferential side walls of the two cylindrical blocks 71 contact the inner walls of the two U-shaped frames 821 respectively. The U-shaped frames 821 and the cylindrical blocks 71 cooperate to restrict the oil receiving box 7 from moving horizontally downward and towards or away from the blocking plate 6, so that the support mechanism 8 supports the oil receiving box 7. Through the double fixation of the position of the oil receiving box 7 by the support mechanism 8 and the magnet block 73, the oil receiving box 7 can stably receive the lubricating oil discharged from the oil drain hole 52 for a long time.

[0046] After the operator visually observes that the lubricating oil inside the oil reservoir has been drained, the operator first unscrews the threaded rod 89 from the current slot 851, and then pushes the rack 86 along the extension direction of the guide rail 85 towards the blocking plate 6. During this process, the rack 86 drives the gear 84 to rotate through the meshing relationship. The gear 84 drives the two corresponding rotating rods 82 to rotate through the connecting rod 83, causing the rotating rods 82 to rotate in the direction away from the inner groove 5 of the blocking plate 6. When the end of the rack 86 contacts the blocking plate 6, the position of the threaded rod 89 corresponds to the other slot 851, and the rotating rod 82 rotates to the side of the blocking plate 6 away from the inner groove 5, and the rotating rod 82 is in the retracted state.

[0047] Then the operator rotates the threaded rod 89 again, screwing the end of the threaded rod 89 into the current slot 851, which locks the rotating rod 82 in the retracted state. The rotating rod 82 in the retracted state will not affect the retraction of the intermediate section 2 and the support section 3. Then the operator removes the oil receiving box 7 from the intermediate section 2 or the support section 3, and then tightens the screw plug 53 inside the corresponding oil drain hole 52, so that the screw plug 53 seals the oil drain hole 52 again, restoring the oil storage function of the oil storage chamber.

[0048] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A telescopic fork for preventing grease spillage, comprising a mounting section (1), an intermediate section (2) slidably mounted on the mounting section (1), a support section (3) slidably mounted on the intermediate section (2), and symmetrically provided recessed grooves (5) on both sides of the support section (3) and the intermediate section (2). A plurality of rollers (4) are laterally arrayed and rotatably mounted on both sides of the interior of the mounting section (1) and the intermediate section (2) at positions corresponding to each recessed groove (5), wherein the circumferential sidewalls of the rollers (4) contact the top and bottom sides of the corresponding recessed grooves (5), characterized in that: Both ends of the mounting section (1) and the intermediate section (2) are fixedly installed with blocking plates (6). The blocking plates (6) seal the ends of the embedded groove (5). The outer ends of the top and bottom sides of the embedded groove (5) are integrally formed with baffles (51). The side wall of the embedded groove (5), the baffles (51) below, and the blocking plates (6) at both ends together form an oil storage cavity. The oil storage cavity is used to temporarily store the overflowing lubricating oil. The bottom of the embedded groove (5) is provided with an oil drain hole (52) that extends to the outside. The oil drain hole (52) is internally threaded with a screw plug (53). The blocking plate (6) is provided with a support mechanism (8) at the position corresponding to each oil drain hole (52). When the oil receiving box (7) is placed below the oil drain hole (52), the support mechanism (8) at the corresponding position limits and supports the oil receiving box (7).

2. The telescopic fork for preventing grease spillage according to claim 1, characterized in that: The support mechanism (8) includes two mounting brackets (81) fixedly installed on the side of the end plate (6) away from the inner groove (5). A connecting rod (83) is rotatably connected between the two mounting brackets (81). The two ends of the connecting rod (83) rotatably pass through the corresponding mounting bracket (81) and are fixedly connected to a rotating rod (82). A U-shaped frame (821) is fixedly connected to the upper side wall of the rotating rod (82).

3. The telescopic fork for preventing grease spillage according to claim 1, characterized in that: The support mechanism (8) also includes a gear (84) coaxially fixedly connected to the connecting rod (83). A rack (86) is meshed above the gear (84). Guide rails (85) are slidably mounted on both sides of the rack (86). One end of the guide rail (85) is fixedly mounted on the blocking plate (6), and the other ends of the two guide rails (85) are jointly fixedly mounted on an end plate (87).

4. The telescopic fork for preventing grease spillage according to claim 3, characterized in that: The support mechanism (8) also includes a lever (88) fixedly installed on the upper side wall of the rack (86), and a threaded rod (89) is threadedly connected to the lever (88), and two slots (851) are opened on one of the guide rails (85).

5. The telescopic fork for preventing grease spillage according to claim 4, characterized in that: When the end of the rack (86) contacts the end plate (87), the position of the threaded rod (89) corresponds to the position of one of the slots (851). At this time, the rotating rod (82) is in the unfolded state. When the end of the rack (86) contacts the blocking plate (6), the position of the threaded rod (89) corresponds to the other slot (851). At this time, the rotating rod (82) is in the retracted state. The rotating rod (82) in the retracted state is located on the side of the blocking plate (6) away from the inner groove (5).

6. The telescopic fork for preventing grease spillage according to claim 1, characterized in that: Cylindrical blocks (71) are fixedly connected to the middle positions on both sides of the oil receiving box (7). When the oil receiving box (7) is placed below the oil drain hole (52), the upper side wall of the oil receiving box (7) contacts the lower side wall of the middle section (2) or the support section (3). When the rotating rod (82) is in the unfolded state, the two rotating rods (82) contact the two sides of the oil receiving box (7) respectively, and the circumferential side walls of the two cylindrical blocks (71) contact the inner walls of the two U-shaped frames (821) respectively.

7. The telescopic fork for preventing grease spillage according to claim 1, characterized in that: Positioning blocks (72) are fixedly connected to the upper side wall of the oil receiving box (7) near the four corners. Positioning holes (54) are opened on the lower side wall of the middle section (2) and the support section (3) corresponding to each positioning block (72). When the upper side wall of the oil receiving box (7) contacts the lower side wall of the middle section (2) or the support section (3), the positioning block (72) is inserted into the corresponding positioning hole (54).

8. The telescopic fork for preventing grease spillage according to claim 1, characterized in that: Several magnet blocks (73) are embedded and fixedly installed in the upper side wall of the oil receiving box (7). The middle section (2) and the support section (3) are both made of ferromagnetic material. When the upper side wall of the oil receiving box (7) contacts the lower side wall of the middle section (2) or the support section (3), the magnet blocks (73) are magnetically attracted to the middle section (2) or the support section (3).

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