Rapid dismounting and rapid cutter clamping mechanism of swing shovel

Abstract

The utility model relates to a quick dismounting and quick knife clamping mechanism of a swing shovel, which comprises an output shaft, a head shell, a knife clamping mechanism and a knife clamping mechanism, the output shaft is internally provided with a containing cavity, a limiting hole and an inserting hole which are sequentially communicated from top to bottom, the output shaft is arranged in the head shell, and the lower end of the output shaft extends out of the head shell; the pull rod comprises a main body rod, a connecting rod and a limiting boss which are sequentially connected from top to bottom, the main body rod is arranged in the containing cavity and slidably connected in the limiting hole, the connecting rod extends out of the insertion hole, and the diameter of the limiting boss is larger than that of the connecting rod; an eccentric hole and a connecting hole which are communicated are formed in the pressing plate, the connecting hole, the pressing plate and the pull rod are coaxially arranged, the eccentric hole is eccentrically arranged relative to the connecting hole, the inner diameter of the connecting hole is larger than that of the eccentric hole, and the inner diameter of the eccentric hole is not smaller than the diameter of the limiting boss. The beneficial effects of the utility model are that: the installation is very convenient and fast, the structure is simpler, and the later replacement, maintenance and the like are convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to swing shovel technical field, especially in quick dismounting and quick clamping knife mechanism of swing shovel. BACKGROUND

[0002] Swing shovel, also known as universal treasure, is a kind of multifunctional swing shovel head shell structure reciprocating swing type power tool, and the blade connected with output shaft is driven to do reciprocating motion by motor in the shell. Swing shovel can realize cutting, polishing, scraping, roughing and polishing and other functions by replacing the blade installed in the head, which is convenient and practical. Cutting is an important function of swing shovel in use, and is frequently used in woodworking and construction field. The existing swing shovel generally has complex structure, and is troublesome to install and maintain, and the speed is generally constant, and cannot be adjusted according to the specific environment.

[0003] The applicant applied for the utility model patent of the tool quick change and locking mechanism of multifunctional swing shovel on December 16, 2019, and was authorized on September 1, 2020, with the authorization announcement number CN211387721U. The tool quick change and locking mechanism of multifunctional swing shovel is realized by rotating the eccentric block, the eccentric block is extruded to the push-pull rod, the push-pull rod moves to the front end of the output shaft, with the movement of the push-pull rod, the locking pin in the locking groove also moves to the front end of the output shaft, with the movement of the locking pin, the locking pin moves from the locking groove to the opening of the sleeve through the transition groove, at this time, the locking pin can be freely moved to both sides, the locking force of the pressing plate disappears, and the pressing plate begins to fall, and the first O-ring can make the pressing plate not completely fall under the damping effect, which is convenient for assembling the tool; after the tool is assembled, the eccentric block is reset, the spring pushes the push-pull rod to make the locking pin rise into the sleeve, so that the locking pin is collected until it returns to the locking groove, and the locking force generated by the spring and the locking pin on the pressing plate is used to lock the tool.

[0004] However, it is found in the subsequent research and development and use process that the product has many internal parts and complex connection structure, which is not conducive to assembly and later maintenance. UTILITY MODEL CONTENT

[0005] In view of the deficiencies of the prior art, the utility model aims to provide a quick dismounting and quick clamping knife mechanism of swing shovel to solve the above problems.

[0006] The technical scheme of the utility model is realized as follows: a quick dismounting and quick clamping knife mechanism of swing shovel, comprising a head shell, further comprising:

[0007] An output shaft is provided with a containing cavity, a limiting hole and an insertion hole which are sequentially communicated from top to bottom, and the output shaft is arranged in the head shell and the lower end thereof protrudes from the head shell.

[0008] The pull rod comprises a main rod, a connecting rod and a limiting boss connected in sequence from top to bottom, the main rod is arranged in the accommodating cavity and is connected in the limiting hole in a sliding mode, the connecting rod extends out of the insertion hole, and the diameter of the limiting boss is larger than that of the connecting rod.

[0009] The eccentric hole and the connecting hole are communicated, the connecting hole, the pressing plate and the pull rod are coaxially arranged, the eccentric hole is eccentrically arranged relative to the connecting hole, the inner diameter of the connecting hole is larger than that of the eccentric hole, and the inner diameter of the eccentric hole is not less than the diameter of the limiting boss.

[0010] The saw blade is arranged between the pressing plate and the output shaft.

[0011] By adopting the technical scheme, when the pressing plate is installed, the limiting boss is first arranged in the eccentric hole, then the pressing plate is moved upwards, when the limiting boss is completely arranged in the connecting hole, the insertion column can be easily and smoothly arranged in the insertion hole through the contact guiding effect of the outer edge of the upper end of the insertion column and the opening edge of the insertion hole, the coaxial center of the connecting hole gradually approaches the coaxial center of the pull rod, the connecting rod and the limiting boss approach the side of the eccentric hole and the connecting hole, then the pull rod is moved upwards, a part of the upper side wall of the limiting boss is pressed on a part of the upper side wall of the connecting hole, so that the pressing plate is moved upwards and the saw blade is clamped between the pressing plate and the output shaft; when the pressing plate is moved upwards, the eccentric hole arranged eccentrically can not only arrange the limiting boss in the connecting hole, but also press the pressing plate upwards on the lower end of the output shaft through the cooperation of the limiting boss and the connecting hole when the pull rod is moved upwards, the pressing plate only needs to be inserted upwards, and the installation is very convenient and convenient, meanwhile, the integrated arrangement of the pull rod makes the structure simpler, and the replacement, maintenance and the like in the later period are facilitated.

[0012] The utility model further sets up: the upper side of pressing plate projects and is equipped with the insertion column that cooperates with insertion hole, the eccentric hole extends and penetrates the insertion column upwards.

[0013] By adopting the technical scheme, the cooperation of the insertion hole and the insertion column can make the connection of the pressing plate and the output shaft more stable.

[0014] The utility model further sets up: the accommodating cavity is equipped with spring, the outer wall of main rod projects and is equipped with the stopper that cooperates with spring upper end.

[0015] By adopting the technical scheme, when the pull rod is pressed downwards by the acting force, the spring is compressed through the stopper, when the acting force is cancelled, the pull rod is moved upwards under the action of the spring, and the pressing plate presses the saw blade on the lower end of the output shaft.

[0016] The utility model further sets up: the accommodating cavity is equipped with the stop ring for limiting stopper above stopper.

[0017] By adopting the technical scheme, the stop ring can limit the upper side of the stop block, and the pull rod is prevented from falling out of the accommodating cavity.

[0018] The utility model further sets up: the main body pole, connecting rod, limit boss and stop block integrative forming setting.

[0019] By adopting the technical scheme, the strength is higher, the service life is prolonged, the structure is simple, and the number of parts is reduced.

[0020] The utility model further sets up: the axle of eccentric hole and the axle distance of connecting hole is 0.7-1.3mm.

[0021] By adopting the technical scheme, the pressing plate can effectively drive the saw blade to be pressed on the lower end of the output shaft, and the stability is higher.

[0022] The utility model further sets up: the lower end opening edge of insertion hole is equipped with chamfer.

[0023] By adopting the technical scheme, when the pressing plate moves up, the chamfer will contact and guide the outer edge of the upper end of the insertion column, so that the insertion column is guided into the insertion hole, and the insertion of the insertion column is more relaxed and smooth, and the connecting rod and the limit boss can move to one side of the connecting hole.

[0024] The utility model further sets up: the head shell is rotationally connected with a wrench, the wrench is equipped with an eccentric block, and the upper end of the main body pole extends upward in the accommodating cavity and cooperates with the eccentric block.

[0025] By adopting the technical scheme, the eccentric block is driven by rotating the wrench to realize the downward pressing action of the main body pole.

[0026] The utility model further sets up: the pressing plate adopts a metal material.

[0027] By adopting the technical scheme, the pressing plate made of the metal material can effectively and stably act on the upper side of the pressing plate, so that the pressing of the saw blade is more stable. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating creative labor.

[0029] Figure 1 It is a structural explosion diagram of the utility model;

[0030] Figure 2The utility model discloses structure section view;

[0031] Figure 3 The utility model discloses structure of pressure plate's schematic diagram for the utility model;

[0032] Figure 4 The utility model discloses structure bottom view;

[0033] Figure 5 The utility model discloses structure action schematic Figure 1 ;

[0034] Figure 6 The utility model discloses structure action schematic Figure 2 ;

[0035] Figure 7 The utility model discloses structure action schematic Figure 3 ;

[0036] Figure 8 The utility model discloses structure action schematic Figure 4 ;

[0037] Figure 9 The utility model discloses structure action schematic Figure 5 . Specific embodiment

[0038] The technical scheme in the embodiments of the utility model will be apparently and completely described in conjunction with the drawings in the embodiments of the utility model, and apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor belong to the range of the utility model protection.

[0039] As Figures 1-9 shown, the utility model discloses a quick dismounting and quick clamping knife mechanism of swing shovel, including head shell 1, still including:

[0040] Output shaft 2, the output shaft 2 is equipped with the containing cavity 20, the limiting hole 21 and the insertion hole 22 that sequentially communicate from top to bottom, the output shaft 2 is located in head shell 1 and the lower end is stretched out to head shell 1;

[0041] Pull rod 3, the pull rod 3 includes the main body rod 30, the connecting rod 31 and the limiting boss 32 that are sequentially connected from top to bottom, the main body rod 30 is located in containing cavity 20 and is slidably connected in limiting hole 21, the connecting rod 31 is stretched out to insertion hole 22, and the diameter of limiting boss 32 is greater than the diameter of connecting rod 31;

[0042] A pressing plate 4 is provided with a communication eccentric hole 40 and a connecting hole 41, the connecting hole 41, the pressing plate 4 and the pull rod 3 are coaxial, the eccentric hole 40 is eccentric relative to the connecting hole 41, the inner diameter of the connecting hole 41 is larger than that of the eccentric hole 40, and the inner diameter of the eccentric hole 40 is not less than the diameter of the limiting boss 32;

[0043] A saw blade 5 is arranged between the pressing plate 4 and the output shaft 2.

[0044] By the above technical scheme, when the limiting boss 32 is inserted into the eccentric hole 40, the pressing plate 4 is moved upwards, when the limiting boss 32 is completely inserted into the connecting hole 41, the upper end outer edge of the insertion column 42 is in contact with the opening edge of the insertion hole 22, the insertion column 42 is easily and smoothly inserted into the insertion hole 22, the axis of the connecting hole 41 gradually approaches the axis of the pull rod 3, the connecting rod 31 and the limiting boss 32 are close to one side of the eccentric hole 40 and the connecting hole 41, then the pull rod 3 is moved upwards, the upper side wall of the limiting boss 32 is pressed on a part of the upper side wall of the connecting hole 41, so that the pressing plate 4 is moved upwards and the saw blade 5 is clamped between the pressing plate 4 and the output shaft 2; when the pressing plate is moved upwards, the eccentric hole 40 is eccentric, the limiting boss 32 can be inserted into the connecting hole 41, and the pressing plate 4 is pressed on the lower end of the output shaft 2 through the cooperation of the limiting boss 32 and the connecting hole 41 when the pull rod 3 is moved upwards, the pressing plate 4 only needs to be inserted upwards, and the installation is very convenient and convenient, meanwhile, the integrated arrangement of the pull rod 3 makes the structure simpler, and the replacement, maintenance and the like are facilitated.

[0045] In the embodiment of the utility model, the upper side of the pressing plate 4 is provided with an insertion column 42 matched with the insertion hole 22, and the eccentric hole 40 extends upwards and penetrates the insertion column 42.

[0046] By the above technical scheme, the cooperation of the insertion hole 22 and the insertion column 42 can make the connection of the pressing plate 4 and the output shaft 2 more stable.

[0047] In the embodiment of the utility model, the accommodating cavity 20 is provided with a spring 6, and the outer wall of the main rod 30 is provided with a stop block 33 matched with the upper end of the spring 6.

[0048] By the above technical scheme, when the pull rod 3 is pressed downwards by a force, the spring 6 is compressed through the stop block 33, and when the force is removed, the pull rod 3 moves upwards under the action of the spring 6 and drives the pressing plate 4 to press the saw blade 5 on the lower end of the output shaft 2.

[0049] In the embodiment of the utility model, the accommodating cavity 20 is provided with a stop ring 7 above the stop block 33 for limiting the stop block 33.

[0050] By adopting the technical scheme, the stop ring 7 can limit the upper side of the stop block 33, and the pull rod 3 is prevented from falling out of the accommodating cavity 20.

[0051] In the embodiment of the utility model, the main rod 30, the connecting rod 31, the limiting boss 32 and the stop block 33 are integrally formed.

[0052] By adopting the technical scheme, the strength is higher, the service life is prolonged, the structure is simple, and the number of parts is reduced.

[0053] In the embodiment of the utility model, the distance between the axis of the eccentric hole 40 and the axis of the connecting hole 41 is 0.7-1.3mm.

[0054] By adopting the technical scheme, the saw blade 5 can be effectively pressed tightly at the lower end of the output shaft 2 by the pressing plate 4, and the stability is higher.

[0055] In the embodiment of the utility model, the lower end opening edge of the insertion hole 22 is provided with a chamfer.

[0056] By adopting the technical scheme, when the pressing plate 4 moves upward, the chamfer will be in contact with the outer edge of the upper end of the insertion column 42 to guide the insertion column 42 into the insertion hole 22, so that the insertion of the insertion column 42 is more relaxed and smooth, and the connecting rod 31 and the limiting boss 32 can move to one side of the connecting hole 41.

[0057] In the embodiment of the utility model, the wrench 10 is rotatably connected to the head shell 1, the eccentric block 11 is arranged on the wrench 10, and the upper end of the main rod 30 extends upward from the accommodating cavity 20 and cooperates with the eccentric block 11.

[0058] By adopting the technical scheme, the eccentric block 11 is driven by rotating the wrench 10 to realize the downward pressing action of the main rod 30.

[0059] In the embodiment of the utility model, the pressing plate 4 is made of metal material.

[0060] By adopting the technical scheme, the pressing plate 4 made of metal material can effectively and stably act on the upper side of the pressing plate 4, so that the pressing of the saw blade 5 is more stable.

[0061] The above only describes the preferred embodiments of the utility model, and does not limit the utility model, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A quick release and quick clamp mechanism of a swing shovel comprising a head housing (1), characterized in that, Also include: The output shaft (2) is provided with containing cavity (20), limit hole (21) and insertion hole (22) from top to bottom in turn, the output shaft (2) is arranged in the head shell (1) and the lower end is stretched out of the head shell (1); Pull rod (3), the pull rod (3) includes the main body rod (30), connecting rod (31) and limit boss (32) from top to bottom in turn, the main body rod (30) is arranged in containing cavity (20) and is connected in limit hole (21) slidingly, the connecting rod (31) is stretched out of insertion hole (22), the diameter of limit boss (32) is greater than the diameter of connecting rod (31); The pressing plate (4) is provided with the eccentric hole (40) and the connecting hole (41) in the upper side, the connecting hole (41), the pressing plate (4) and the pull rod (3) are coaxial, the eccentric hole (40) is eccentric relative to the connecting hole (41), the inner diameter of the connecting hole (41) is greater than the inner diameter of the eccentric hole (40), the inner diameter of the eccentric hole (40) is not less than the diameter of the limit boss (32); Saw blade (5), the saw blade (5) is arranged between the pressing plate (4) and the output shaft (2).

2. A quick release and quick clamp blade mechanism for a swing blade according to claim 1, wherein The upper side of the pressing plate (4) is provided with an insertion column (42) matched with the insertion hole (22), and the eccentric hole (40) extends upward and penetrates the insertion column (42).

3. A quick release and quick clamp blade mechanism for a swing blade according to claim 1 wherein, The containing cavity (20) is provided with a spring (6), and the outer wall of the main body rod (30) is provided with a stop block (33) matched with the upper end of the spring (6).

4. A quick release and quick clamp blade mechanism for a swing blade according to claim 3 wherein, The containing cavity (20) is provided with a stop ring (7) above the stop block (33) for limiting the stop block (33).

5. A quick release and quick clamp blade mechanism for a swing blade according to claim 3 wherein, The main body rod (30), the connecting rod (31), the limit boss (32) and the stop block (33) are integrally formed.

6. A quick release and quick clamp blade mechanism for a swing blade according to claim 1 wherein, The eccentric hole (40) and the connecting hole (41) are coaxial, and the distance between the eccentric hole (40) and the connecting hole (41) is 0.7-1.3mm.

7. A quick release and quick clamp blade mechanism for a swing blade according to claim 1 wherein, The lower end of the insertion hole (22) is provided with a chamfered edge.

8. A quick release and quick clamp blade mechanism for a swing blade according to claim 1 wherein, The head shell (1) is rotatably connected with a wrench (10), the wrench (10) is provided with an eccentric block (11), and the upper end of the main body rod (30) is stretched out of the containing cavity (20) and matched with the eccentric block (11).

9. A quick release and quick clamp blade mechanism for a swing blade according to claim 1 wherein, The pressing plate (4) is made of metal material.

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