Moving arm oil cylinder hinging assembly of fork loading machine

Abstract

The utility model provides a forklift loader movable arm oil cylinder hinge assembly which comprises an installation cover, a shaft sleeve and a supporting seat, the installation cover and the supporting seat are locked through a bolt, a pin hole is formed between the installation cover and the supporting seat, and the shaft sleeve is installed in the pin hole. The device further comprises a cylindrical positioning pin and an oil cup. A positioning hole for assembling the cylindrical positioning pin and an inserting hole for assembling the oil cup are formed in the central axis of the mounting cover, and a shaft sleeve hole for inserting the cylindrical positioning pin is formed in the shaft sleeve; the inner diameter of the positioning hole is larger than that of the inserting hole, the positioning hole is communicated with the inserting hole, and a limiting step is formed between the positioning hole and the inserting hole. A cylindrical positioning pin of a regular structure is used for the hinge assembly, and the machining efficiency is high; a positioning hole does not need to be formed in the supporting seat, only one shaft sleeve hole needs to be formed in the shaft sleeve, the depth of the shaft sleeve hole does not need to be considered during drilling, and the machining efficiency of the hinge assembly is high.

Description

[Technical field]

[0001] The utility model relates to the technical field of forklifts, in particular to a forklift boom oil cylinder hinge assembly. [Background technology]

[0002] Forklifts have strong off-road performance and flexible steering capabilities. They can adapt to a variety of complex working conditions and are widely used in mining, logistics, construction and other industries. Traditional forklifts include a front frame, a boom and a cylinder. The cylinder drives the boom to swing, and the cylinder is hinged to the front frame through two hinges set on the left and right.

[0003] As attached Figure 1 As shown, the conventional hinge 200 includes a base 210, an upper cover 220, and a collar 230; a first semicircular groove 211 is formed on the base 210, a first mounting hole 212 is formed at the bottom of the first semicircular groove 211, a second semicircular groove 221 is formed on the upper cover 220, a second mounting hole 222 is formed at the bottom of the second semicircular groove 221, a third mounting hole 231 and a fourth mounting hole 232 are respectively formed on the collar 230, and a stop pin 240 is inserted into the first mounting hole 212 and the third mounting hole 231 to assemble the collar 230 between the base 210 and the upper cover 220. However, this technical solution has the following defects:

[0004] 1. The collar 230 needs to be drilled twice, and the two mounting holes need to be precisely symmetrical up and down, which makes the processing process complicated and difficult;

[0005] 2. The processing depth of the mounting hole is required to be high. If it is too deep, the limit pin is not long enough and the contact height with the shaft ring is not enough; if it is too shallow, the limit pin is too long, which affects the assembly of the cylinder and the contact depth with the hinge is not enough;

[0006] 3. If the limit pin 240 is cut off by a large shear force, part of the limit pin will remain in the installation hole and will be difficult to remove.

[0007] In view of this, the inventor of this case conducted in-depth research on the above-mentioned issues, which led to the emergence of this case. [Contents of the utility model]

[0008] The utility model aims to solve the above technical problems and provides a forklift boom oil cylinder hinge assembly, which has low processing difficulty and simple assembly process.

[0009] The utility model is implemented as follows: a forklift boom cylinder hinge assembly includes a mounting cover, a shaft sleeve, and a support seat, the mounting cover and the support seat are locked by bolts, a pin hole is formed between the mounting cover and the support seat, and the shaft sleeve is installed in the pin hole; it also includes a cylindrical locating pin and an oil cup; a positioning hole for assembling the cylindrical locating pin and an insertion hole for assembling the oil cup are provided on the central axis of the mounting cover, and a shaft sleeve hole for inserting the cylindrical locating pin is formed on the shaft sleeve; the inner diameter of the positioning hole is larger than the inner diameter of the insertion hole, and the positioning hole and the insertion hole are connected, and a limited position step is formed between the positioning hole and the insertion hole.

[0010] Furthermore, the inner diameter of the positioning hole is the same as the inner diameter of the sleeve hole.

[0011] Furthermore, the cylindrical positioning pin penetrates along the central axis to form an oil inlet cavity and an oil through hole, and the inner diameter of the oil inlet cavity is larger than the inner diameter of the oil through hole.

[0012] Furthermore, two upper threaded holes penetrating the mounting cover are symmetrically formed on the mounting cover; and lower threaded holes corresponding to the upper threaded holes are formed on the support seat.

[0013] Furthermore, the oil cup is a straight-through pressure-injection oil cup.

[0014] The advantages of the utility model are:

[0015] 1. Use cylindrical positioning pins with regular structure, which has high processing efficiency.

[0016] 2. The support seat does not need to open a positioning hole, and only one sleeve hole needs to be opened on the sleeve. When drilling, there is no need to consider the depth of the sleeve hole, and the processing efficiency of the hinge assembly is high.

[0017] 3. When assembling the articulated assembly, first insert the sleeve into the first semicircular groove, then pass the cylindrical positioning pin through the sleeve hole from bottom to top, insert it into the positioning hole and press against the limit step, finally insert the pin into the sleeve to hold the cylindrical positioning pin; then install the sleeve into the second semicircular groove, use bolts to lock the mounting cover and support seat, and finally install the oil cup into the insertion hole. The assembly steps of the sleeve and the mounting cover support seat are few, which makes the assembly efficiency of the boom cylinder articulated assembly high.

Brief Description of the Drawings

[0018] The present invention will be further described below in conjunction with the embodiments with reference to the accompanying drawings.

[0019] Figure 1 It is a schematic diagram of the structure of a traditional hinge.

[0020] Figure 2 It is a structural schematic diagram of the forklift loader of the utility model.

[0021] Figure 3 It is a structural schematic diagram of the hinge assembly in the utility model.

[0022] Figure 4 It is a cross-sectional view of the hinge assembly in the utility model.

[0023] Figure 5 It is a structural schematic diagram of the installation cover in the utility model.

[0024] Figure 6 It is a cross-sectional view of the installation cover in the utility model.

[0025] Figure 7 It is a structural schematic diagram of the shaft sleeve of the utility model.

[0026] Figure 8 It is a cross-sectional view of a cylindrical positioning pin in the utility model.

[0027] Traditional hinge 200, base 210, first semicircular groove 211, first mounting hole 212, upper cover 220, second semicircular groove 221, second mounting hole 222, collar 230, third mounting hole 231, fourth mounting hole 232, limit pin 240,

[0028] Forklift 1000, articulated assembly 100, front frame 300, drive arm 400, boom cylinder 500, pin shaft 600, mounting cover 1, positioning hole 11, insertion hole 12, limiting step 13, first semicircular groove 14, upper threaded hole 15, bushing 2, bushing hole 21, support seat 3, bolt 4, cylindrical positioning pin 5, oil inlet chamber 51, oil hole 52, oil cup 6. [Specific implementation method]

[0029] In order to better understand the technical solution of the present invention, the technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0030] It should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing these embodiments and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. In addition, the terms "first", "second", etc., etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features.

[0031] See also Figure 2 As shown, the forklift 1000 includes a front frame 300, a driving arm 400, a boom cylinder 500, a pin shaft 600, and an articulated assembly 100; the driving arm 400 is installed in the middle of the front frame 300, and two boom cylinders 500 for driving the driving arm 400 to swing are installed on the left and right sides of the front frame 300, and any one of the boom cylinders 500 is installed on the front frame 300 through a pin shaft 600 and two articulated assemblies 100.

[0032] See also Figures 3 to 8 As shown, a forklift boom cylinder hinge assembly 100 includes a mounting cover 1, a shaft sleeve 2, and a support seat 3. The mounting cover 1 and the support seat 3 are locked by bolts 4. A pin hole is formed between the mounting cover 1 and the support seat 3, and the shaft sleeve 2 is installed in the pin hole. The mounting cover 1 is formed with a first semicircular groove 14, and the support seat 3 is formed with a second semicircular groove. The first semicircular groove 14 and the second semicircular groove are arranged to form the pin hole.

[0033] The hinge assembly 100 also includes a cylindrical locating pin 5 and an oil cup 6; a locating hole 11 for assembling the cylindrical locating pin 5 and an insertion hole 12 for assembling the oil cup 6 are formed on the central axis of the mounting cover 1, and a sleeve hole 21 for inserting the cylindrical locating pin 5 is provided on the sleeve 2; the inner diameter of the locating hole 11 is larger than the inner diameter of the insertion hole 12, and the locating hole 11 and the insertion hole 12 are connected, and a limiting step 13 is formed between the locating hole 11 and the insertion hole 12, and the limiting step 13 is provided to prevent the cylindrical locating pin 5 from jumping out of the locating hole 11.

[0034] The utility model forklift boom cylinder articulation assembly 100 has at least the following beneficial technical effects:

[0035] 1. Use of cylindrical positioning pins 5 with regular structure has high processing efficiency.

[0036] 2. The support seat 3 does not need to be provided with a positioning hole, and only one sleeve hole 21 needs to be provided on the sleeve 2. The depth of the sleeve hole 21 does not need to be considered when drilling, and the processing efficiency of the hinge assembly 100 is high.

[0037] 3. When assembling the articulated assembly 100, first install the sleeve 2 into the first semicircular groove 14, then insert the cylindrical positioning pin 5 from bottom to top through the sleeve hole 21, insert it into the positioning hole 11 and abut against the limiting step 13, finally insert the pin 600 into the sleeve 2 to hold the cylindrical positioning pin 5; the sleeve 2 is then installed into the second semicircular groove, the mounting cover 1 and the support seat 3 are locked with the bolt 4, and finally the oil cup 6 is installed into the insertion hole 12. The sleeve 2 and the mounting cover 1 support seat 3 have fewer assembly steps, thereby making the assembly efficiency of the boom cylinder articulated assembly 100 high.

[0038] In the present invention, the inner diameter of the positioning hole 11 is the same as the inner diameter of the sleeve hole 21, which limits the cylindrical positioning pin 5; the positioning hole 11 and the sleeve hole 21 cooperate to make the installation of the cylindrical positioning pin 5 more stable and adaptable.

[0039] In the utility model, the cylindrical positioning pin 5 penetrates along the central axis to form an oil inlet cavity 51 and an oil through hole 52, and the inner diameter of the oil inlet cavity 51 is larger than the inner diameter of the oil through hole 52. When assembling, the oil cup 6 is inserted from the insertion hole 12 of the mounting cover 1 and extends into the oil inlet cavity 51.

[0040] In the present invention, in order to stably lock the mounting cover 1 on the support base 3, two upper threaded holes 15 penetrating the mounting cover 1 are symmetrically formed on the mounting cover 1; and two lower threaded holes corresponding to the upper threaded holes 15 are symmetrically formed on the support base 3.

[0041] In the present invention, the oil cup 6 is formed with an oil cup external thread, and the insertion hole 12 is formed with an internal thread that matches the oil cup external thread. The oil cup 6 is a straight-through pressure injection oil cup, which has the advantage of being able to accurately, timely and stably provide lubricating oil to the shaft sleeve 2, ensuring that the shaft sleeve 2 is fully lubricated during operation and extending the service life of the shaft sleeve 2. The outer surface of the oil cup 6 is formed with a hexagonal screw tightening portion. The structure of the straight-through pressure injection oil cup 6 is a prior art and will not be repeated here.

[0042] Although the specific implementation methods of the present invention are described above, those skilled in the art should understand that the specific embodiments described are only illustrative and are not intended to limit the scope of the present invention. Equivalent modifications and changes made by those skilled in the art in accordance with the spirit of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A forklift boom cylinder hinge assembly, comprising a mounting cover, a shaft sleeve, and a support seat, wherein the mounting cover and the support seat are locked by bolts, a pin hole is formed between the mounting cover and the support seat, and the shaft sleeve is installed in the pin hole; characterized in that: It also includes a cylindrical locating pin and an oil cup; a locating hole for assembling the cylindrical locating pin and an insertion hole for assembling the oil cup are provided on the central axis of the mounting cover, and a sleeve hole for inserting the cylindrical locating pin is formed on the sleeve; the inner diameter of the locating hole is larger than the inner diameter of the insertion hole, and the locating hole and the insertion hole are connected, and a limited position step is formed between the locating hole and the insertion hole.

2. The forklift boom cylinder articulation assembly according to claim 1, characterized in that: The inner diameter of the positioning hole is the same as the inner diameter of the shaft sleeve hole.

3. The forklift boom cylinder articulation assembly according to claim 1 or 2, characterized in that: The cylindrical positioning pin penetrates along the central axis to form an oil inlet cavity and an oil through hole, and the inner diameter of the oil inlet cavity is larger than the inner diameter of the oil through hole.

4. The forklift boom cylinder articulation assembly according to claim 3, characterized in that: The installation cover is symmetrically formed with two upper threaded holes penetrating the installation cover; the support seat is formed with lower threaded holes corresponding to the upper threaded holes.

5. The forklift boom cylinder articulation assembly according to claim 4, characterized in that: The oil cup is a straight-through pressure injection oil cup.

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