CN218856508U - Handheld angle grinder grinding part extension device capable of being quickly assembled and disassembled - Google Patents
Handheld angle grinder grinding part extension device capable of being quickly assembled and disassembled Download PDFInfo
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- CN218856508U CN218856508U CN202222754095.9U CN202222754095U CN218856508U CN 218856508 U CN218856508 U CN 218856508U CN 202222754095 U CN202222754095 U CN 202222754095U CN 218856508 U CN218856508 U CN 218856508U
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- belt pulley
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- bearing
- extension frame
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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Abstract
The utility model discloses a handheld angle grinder grinding part extension device capable of being quickly disassembled and assembled, which comprises a first belt pulley, a second belt pulley, a tensioning device and an extension frame, wherein the first belt pulley and the second belt pulley are respectively arranged at two ends of the extension frame, and the first belt pulley is connected with the second belt pulley through a belt; the extension frame is connected with a fixed shaft, the belt pulley II is installed on the fixed shaft through the bearing I, the flange I is arranged on the outer side of the belt pulley II, the coupling is connected to the outer side of the belt pulley II and comprises a flange II, a connecting shaft, an installation platform and a stud, the installation platform is connected with the flange II through the connecting shaft, the stud is connected to the installation platform, and the flange I and the flange II are connected through the stud; the middle part of the extension frame is provided with a sliding chute, and the tensioning device is arranged in the sliding chute. The utility model has the characteristics of be convenient for the installation, the structure is simple and convenient, the reliability is high, comprehensive cost is low, can realize at job site quick assembly disassembly, does not influence the use of the original function of hand-held type angle mill simultaneously.
Description
Technical Field
The utility model belongs to the mechanical design field, concretely relates to device that can quick assembly disassembly's grinding part to hand-held type angle mill prolongs.
Background
The hand-held angle grinder is used as a grinding and cutting tool which is convenient to carry and operate, and is widely applied to metal grinding operation. The handheld angle grinder gripping part is close to the rotating part in the construction process, so that the working distance of the equipment is limited, and the difficulty and the danger of operation are increased particularly when the equipment is used in certain narrow spaces. Therefore, the design of the device capable of prolonging the grinding part of the handheld angle grinder has important practical application significance.
In this regard, engineering researchers have developed different approaches to address this problem. The chinese utility model patent (CN 203843644U) provides an electric long-neck angle grinder, which adopts a long-neck shaft rod sleeve device between a motor and a gear grinding head, and realizes the extension of a grinding part. However, the device has a complex structure, cannot be quickly disassembled and assembled, has the problems of large occupied space and the like in the processes of storage, transportation and the like, and further improves the manufacturing cost of the handheld angle grinder.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the above-mentioned not enough that exists among the prior art, and provide a structural design is reasonable can quick assembly disassembly's hand-held type angle mill grinding part extension fixture, solve the problem that hand-held type angle mill length is not enough in the field application to can realize at job site quick assembly disassembly.
The utility model provides a technical scheme that above-mentioned problem adopted is: a handheld angle grinder grinding part extension device capable of being quickly disassembled and assembled is characterized by comprising a first belt pulley, a second belt pulley, a tensioning device and an extension frame, wherein the first belt pulley and the second belt pulley are respectively arranged at two ends of the extension frame, and the first belt pulley and the second belt pulley are connected through a belt; the extension frame is connected with a fixed shaft, the second belt pulley is installed on the fixed shaft through a first bearing, a first flange is arranged on the outer side of the second belt pulley, a coupler is connected to the outer side of the second belt pulley and comprises a second flange, a connecting shaft, an installation platform and a stud, the installation platform is connected with the second flange through the connecting shaft, the stud is connected to the installation platform, and the first flange is connected with the second flange through a screw; the middle part of the extension frame is provided with a sliding groove, the tensioning device is installed in the sliding groove, the middle part of the tensioning device is provided with a blind hole for inserting the adjusting bolt, the end part of the tensioning device is provided with a second bearing, the tensioning device is fixed with the side plate of the extension frame through the adjusting bolt, the second bearing is in contact with a belt, and one end, close to the first belt pulley, of the extension frame is provided with an open connecting ring.
Furthermore, a boss is arranged on the outer side of the first belt pulley, and a groove is formed in the middle of the boss.
Furthermore, a step is arranged in a mounting hole in the middle of the second belt pulley, and the first bearing is in contact with the step; the lateral side of the mounting hole is provided with an internal thread for mounting a threaded ring, the threaded ring is provided with an external thread, and the threaded ring is in contact with the inner side face of the first bearing and used for fixing the first bearing.
Furthermore, a shaft sleeve is installed on the fixed shaft, the shaft sleeve is in contact with the outer side face of the first bearing, and a locking nut is installed on the outer side of the shaft sleeve on the fixed shaft.
Compared with the prior art, the utility model, have following advantage and effect: the utility model discloses simple structure adopts the V-belt transmission to be open transmission, can be before the use the wearing and tearing condition of short-term test V-belt etc. guarantees the security in the use, has reached the purpose of being convenient for maintain. The extension fixture can be adapted to most handheld angle grinders in the existing market, and is high in universality. When the grinding device is not required to be extended, the extension device can be rapidly detached, the function of the original angle grinder is not affected, and inconvenience caused by overlong equipment when the original angle grinder is used in a part of narrow operation space is avoided.
The utility model has the characteristics of be convenient for installation, the structure is simple and convenient, the reliability is high, comprehensive cost is low, can realize at job site quick assembly disassembly, does not influence the use of the original function of hand-held type angle mill simultaneously.
Drawings
FIGS. 1-3 are views of the structure and cross-section of the driving wheel in the embodiment of the present invention;
FIGS. 4-6 are cross-sectional views of the driven wheel in an embodiment of the present invention;
fig. 7 is an exploded view of a driven wheel system according to an embodiment of the present invention;
FIG. 8 is a sectional view of a mounting structure of a driven wheel in an embodiment of the present invention;
fig. 9 is a schematic structural diagram of a coupling according to an embodiment of the present invention;
fig. 10 is a schematic view of the tensioner configuration and installation in an embodiment of the present invention;
fig. 11 is a schematic structural diagram of an extension frame according to an embodiment of the present invention.
In the figure: the device comprises a first belt pulley 1, a second belt pulley 2, a tensioning device 3, an extension frame 4, a locking nut 5, a coupling 6, a boss 11, a groove 12, a fixed shaft 21, a first flange 22, a first bearing 23, a threaded ring 24, a shaft sleeve 25, a blind hole 31, a second bearing 32, an adjusting bolt 33, a sliding groove 41, a connecting ring 42, a second flange 61, a connecting shaft 62, a mounting platform 63 and a stud 64.
Detailed Description
The present invention will be described in further detail by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not intended to limit the present invention.
Examples
In the embodiment, the quick-detachable handheld angle grinder grinding part extension device comprises a first belt pulley 1, a second belt pulley 2, a tensioning device 3 and an extension frame 4, wherein the first belt pulley 1 and the second belt pulley 2 are respectively arranged at two ends of the extension frame 4, and the first belt pulley 1 is connected with the second belt pulley 2 through a belt; a boss 11 is arranged on the outer side of the first belt pulley 1, and a groove 12 is formed in the middle of the boss 11; the extension frame 4 is connected with a fixed shaft 21, the second belt pulley 2 is installed on the fixed shaft 21 through a first bearing 23, a step is arranged in an installation hole in the middle of the second belt pulley 2, and the first bearing 23 is in contact with the step; the side of the mounting hole is provided with an internal thread for mounting a threaded ring 24, the threaded ring 24 is provided with an external thread, and the threaded ring 24 is in contact with the inner side surface of the first bearing 23 and used for fixing the first bearing 23. A shaft sleeve 25 is arranged on the fixed shaft 21, the shaft sleeve 25 is in contact with the outer side surface of the bearing I23, and a locking nut 5 is arranged on the fixed shaft 21 and outside the shaft sleeve 25; the first flange 22 is arranged on the outer side of the second belt pulley 2, the coupling 6 is connected to the outer side of the second belt pulley 2, the coupling 6 comprises a second flange 61, a connecting shaft 62, a mounting platform 63 and a stud 64, the mounting platform 63 is connected with the second flange 61 through the connecting shaft 62, the stud 64 is connected to the mounting platform 63, and the first flange 22 is connected with the second flange 61 through a screw; the middle part of the extension frame 4 is provided with a sliding groove 41, the tensioning device 3 is installed in the sliding groove 41, the middle part of the tensioning device 3 is provided with a blind hole 31 for inserting the adjusting bolt 33, the end part of the tensioning device 3 is provided with a second bearing 32, the tensioning device 3 is fixed with the side plate of the extension frame 4 through the adjusting bolt 33, the second bearing 32 is in contact with a belt, and one end, close to the first belt pulley 1, of the extension frame 4 is provided with an open connecting ring 42.
The design principle is as follows: adopt current angle mill rotatable parts as the power supply, do not change to the motor part, ensure the security of angle mill in the use, improve current drive emery wheel pivoted structure, reform transform it into the belt pulley, can regard this part system as the motor directly to drive the belt pulley and carry out high-speed rotatory this moment, name this belt pulley 1, belt pulley 1 is the action wheel of extension fixture in this embodiment promptly. Another pulley is installed at the polishing end of the lengthening device, and the pulley is named as a second pulley 2, so that the second pulley 2 is a driven wheel of the lengthening device in the embodiment. The first belt pulley 1 and the second belt pulley 2 are connected through a single V-belt to transmit motion. The V-belt adopted in the embodiment is a standard component and can be directly purchased. The design of the first belt pulley 1 is shown in fig. 1-3, a boss 11 is arranged at the back of the pulley, a groove 12 is arranged in the middle of the boss 11 and can be clamped into a rectangular boss on a disc at the end of a shaft of a motor, and the main reason for adopting the design is as follows: 1. can guarantee that belt pulley 1 keeps the same angular velocity with hand-held type angle mill motor at the rotation in-process, prevent to cause belt pulley 1 friction to produce heat and wearing and tearing because of cutting (grinding) resistance at the operation in-process to prevent that the device from causing the harm to hand-held type angle mill motor, when protecting angle mill normal life, guarantee the security of operation in-process.
The second belt pulley 2 is designed as shown in fig. 4-6, a flange with a diameter smaller than that of the first belt pulley is arranged on the outer side of the first belt pulley, the flange is named as a flange I22, and four identical threaded holes are uniformly distributed in the flange. The second belt pulley 2 is mounted on the fixed shaft 21 on the extension frame 4, and in order to realize a good rotating operation function, the first belt pulley 2 is matched with the fixed shaft 21 through the first bearing 23, so that a mounting hole in the center of the second belt pulley 2 is a stepped through hole, and one side for mounting the first bearing 23 is provided with an internal thread, so that the first bearing 23 can be conveniently fixed through the threaded ring 24.
To further explain the design and installation structure of the driven wheel system of the present invention in detail, the structure of the driven wheel system is explained by disassembling and assembling, fig. 7 is an exploded view of the whole driven system, and fig. 8 is a sectional view of the driven wheel installed on the fixed shaft 21. In detail, as shown in fig. 7, the fixing shaft 21 is fixed on the extension frame 4, the extension frame 4 is made of mild steel plate with a thickness of 4mm, has sufficient rigidity to meet the installation requirement of the second belt pulley 2, and the fixing shaft 21 for installing the second belt pulley 2 is connected with the extension frame 4 in a welding manner. The fixed shaft 21 has a shoulder and threads to facilitate the installation of the second pulley 2 with the first bearing 23. The bearing I23 is arranged in a hole on the inner side of the belt pulley II 2 (one side of the belt pulley II 2 close to the extension frame 4 is defined as the inner side), and is fixed by a threaded ring 24 with external threads, so that the belt pulley II 2 and the bearing I23 are prevented from slipping in the rotating process, the threaded ring 24 is only contacted with the outer ring of the bearing I23, the other side of the outer ring of the bearing I23 is contacted with a step of a central through hole of the belt pulley II 2, and the whole consisting of the belt pulley II 2, the bearing I23 and the threaded ring 24 is arranged on the fixed shaft 21. A shaft shoulder on the fixed shaft 21 is in contact with the inner side of the inner ring of the first bearing 23, and then the shaft sleeve 25 is installed on the fixed shaft 21, and the shaft sleeve 25 is in contact with the outer side of the inner ring of the first bearing 23. After the shaft sleeve 25 is installed, a locking nut 5 for locking is installed on the fixed shaft 21, and the installed parts are shown in detail in fig. 8, namely, the installation of the driven wheel system on the fixed shaft 21 is completed, and the second belt pulley 2 can freely rotate on the fixed shaft 21.
The grinding wheel is used as a main part of cutting (grinding), the grinding wheel is driven to rotate by the rotation of the belt pulley II 2, in order to fix the grinding wheel conveniently, the coupling 6 is additionally arranged outside the belt pulley II 2, as shown in detail in FIG. 9, the coupling 6 is composed of a flange II 61, a connecting shaft 62, a mounting platform 63 and a stud 64, the mounting platform 63 is connected with the flange II 61 through the connecting shaft 62, the stud 64 is connected onto the mounting platform 63, the grinding wheel can be mounted on the mounting platform 63 through the stud 64 and fixed by adopting a specific nut, and no relative sliding exists between the grinding wheel and the coupling 6 in the operation process. The coupler 6 and the second belt pulley 2 are fixed by screws, and the number of the screws is 4. During the rotation process, the angular speed of the grinding wheel, the coupling 6 and the second belt pulley 2 is consistent.
When the angle grinder grinds a part, the part generates corresponding resistance to the grinding wheel, and therefore, in order to prevent the triangular belt from slipping in the transmission process, the tensioning device 3 is arranged between the first belt pulley 1 and the second belt pulley 2. As shown in detail in FIG. 10, the tensioning device 3 is installed in the sliding slot 41 of the back plate of the extension frame 4 and can only slide up and down along the sliding slot 41, the adjusting bolt 33 is inserted into the blind hole 31 of the tensioning device 3 through the threaded hole on the side plate of the extension frame 4 to adjust the position of the tensioning device 3 up and down, and the adjusting bolt 33 is provided with a locking nut 5 which is locked after the adjustment of the tensioning degree is completed to prevent the tensioning device 3 from loosening during the operation. The tensioning device 3 is a manual tensioning device, the part of the manual tensioning device, which is in contact with the belt, is a bearing, namely a bearing II 32, and the bearing II 32 rotates in the moving process of the belt, so that the abrasion of the tensioning device 3 on the V-belt in the moving process is reduced.
The extension frame 4 serves as a support structure of the driven wheel system and also serves as a connection function with the angle grinder body. As shown in detail in fig. 11, an open metal coupling ring 42 is provided on the side of the extension frame 4 adjacent to the angle grinder, and the coupling ring 42 can be adjusted in diameter by means of bolts mounted thereon, thereby achieving fastening and dismantling. This extension frame 4's mounted position is the mounted position of former angle mill safety cover, installs the utility model discloses during the extension fixture, need demolish the safety cover of former angle mill.
Those not described in detail in this specification are well within the skill of the art.
In addition, it should be noted that the above contents described in the present specification are only examples of the structure of the present invention. All equivalent changes made according to the structure, characteristics and principle of the utility model are included in the protection scope of the utility model. Various modifications, additions and substitutions by those skilled in the art may be made to the described embodiments without departing from the scope of the invention as defined in the accompanying claims.
Claims (4)
1. A handheld angle grinder grinding part extension device capable of being quickly disassembled and assembled is characterized by comprising a first belt pulley (1), a second belt pulley (2), a tensioning device (3) and an extension frame (4), wherein the first belt pulley (1) and the second belt pulley (2) are respectively arranged at two ends of the extension frame (4), and the first belt pulley (1) is connected with the second belt pulley (2) through a belt; the extension frame (4) is connected with a fixed shaft (21), the second belt pulley (2) is installed on the fixed shaft (21) through a first bearing (23), a first flange (22) is arranged on the outer side of the second belt pulley (2), a coupler (6) is connected to the outer side of the second belt pulley (2), the coupler (6) comprises a second flange (61), a connecting shaft (62), an installation platform (63) and a stud (64), the installation platform (63) is connected with the second flange (61) through the connecting shaft (62), the stud (64) is connected to the installation platform (63), and the first flange (22) is connected with the second flange (61) through screws; the middle part of extension frame (4) has been seted up spout (41), overspeed device tensioner (3) are installed in spout (41), blind hole (31) that are used for inserting adjusting bolt (33) are seted up at the middle part of overspeed device tensioner (3), bearing two (32) are installed to the tip of overspeed device tensioner (3), overspeed device tensioner (3) are fixed with the curb plate of extension frame (4) through adjusting bolt (33), bearing two (32) and belt contact, the one end that is close to belt pulley one (1) on extension frame (4) is provided with open go-between (42).
2. The quick-detachable handheld angle grinder grinding part extension device is characterized in that a boss (11) is arranged on the outer side of the first belt pulley (1), and a groove (12) is formed in the middle of the boss (11).
3. The quick-detachable handheld angle grinder grinding part extension device is characterized in that a step is arranged in a mounting hole in the middle of the second belt pulley (2), and the first bearing (23) is in contact with the step; the avris of mounting hole is provided with the internal thread that is used for installing screw ring (24), be provided with the external screw thread on screw ring (24), screw ring (24) and the medial surface contact of bearing (23) for fix bearing (23).
4. The extension device for the grinding part of the hand-held angle grinder capable of being disassembled and assembled quickly as claimed in claim 3, characterized in that a shaft sleeve (25) is installed on the fixed shaft (21), the shaft sleeve (25) is contacted with the outer side surface of the bearing I (23), and a locking nut (5) is installed on the fixed shaft (21) and on the outer side of the shaft sleeve (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222754095.9U CN218856508U (en) | 2022-10-19 | 2022-10-19 | Handheld angle grinder grinding part extension device capable of being quickly assembled and disassembled |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222754095.9U CN218856508U (en) | 2022-10-19 | 2022-10-19 | Handheld angle grinder grinding part extension device capable of being quickly assembled and disassembled |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218856508U true CN218856508U (en) | 2023-04-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222754095.9U Active CN218856508U (en) | 2022-10-19 | 2022-10-19 | Handheld angle grinder grinding part extension device capable of being quickly assembled and disassembled |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218856508U (en) |
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2022
- 2022-10-19 CN CN202222754095.9U patent/CN218856508U/en active Active
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