Heavy ground shaft

Abstract

The utility model discloses a heavy ground shaft which can be fixed with a main arm of a door leaf and comprises a bearing seat, a bearing cylinder, a bearing, a clamping ring and a transmission shaft, mounting grooves are formed in the upper ends of the bearing seats; a positioning groove is formed in the upper end of the bearing cylinder, the bearing comprises a bearing A, a bearing B and a bearing C, the bearing A is assembled in the mounting groove, and the bottom end of the bearing cylinder is rotationally connected with an inner ring of the bearing A; the bearing B and the bearing C are assembled in the mounting groove at intervals, and inner rings are rotationally connected to the outer side wall of the bearing cylinder; the clamping ring is fixed on the bearing cylinder between the bearing B and the bearing C; the upper end of the transmission shaft can be fixed to a main arm of the door leaf, and the lower end is inserted into the positioning groove to drive the bearing cylinder to rotate. The heavy ground shaft designed by the utility model is not only large in bearing capacity, but also capable of improving the accuracy of mounting size, flatness and the like of the ground shaft.

Description

Technical Field

[0001] The utility model relates to the technical field of door ground shafts, and more particularly to a heavy-duty ground shaft. Background Art

[0002] The door hinge is a column or beam that connects the ground and the door. Its main function is to support the weight of the door leaf and help it rotate. The door hinge is connected to the door frame and the door leaf to connect and fix the door body. This structure not only ensures the stability and durability of the door, but also makes the process of opening and closing the door smoother.

[0003] The existing ground axis usually adopts a connecting shaft and a bearing to connect the door leaf and the door frame to realize the rotation opening and closing of the door. It lacks sufficient supporting structure, which makes it easy to deform or damage when bearing a large weight. It is easy to tilt, overturn and other accidents in the process of opening and closing the door, which brings potential safety risks to people. In addition, during the installation of the door ground axis, its installation size and flatness are difficult to control, and the door ground axis is easy to be installed unevenly and tilted, causing the door to shake during use, thus affecting people's normal opening and closing experience; or the size between the door and the bottom surface is too large or too small, resulting in the risk of pinching feet or collision, and affecting the opening and closing of the door.

[0004] Therefore, how to provide a heavy-duty ground axis that has a heavy load-bearing capacity and can improve the accuracy of the size and flatness of the ground axis installation is an urgent problem that needs to be solved by technical personnel in this field. Utility Model Content

[0005] In view of this, the utility model provides a heavy-duty ground axis, which not only has a heavy load-bearing capacity, but also can improve the accuracy of the size and flatness of the ground axis installation.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A heavy-duty ground shaft, which can be fixed to the main arm of a door leaf, comprises: a bearing seat, a load-bearing cylinder, a bearing, a clamping ring and a transmission shaft; a mounting groove is provided at the upper end of the bearing seat;

[0008] A positioning groove is provided at the upper end of the load-bearing cylinder. The bearings include bearing A, bearing B and bearing C. Bearing A is assembled in the mounting groove. The bottom end of the load-bearing cylinder is rotatably connected to the inner ring of bearing A. Bearing B and bearing C are assembled in the mounting groove at intervals, and the inner rings of the two are rotatably connected to the outer wall of the load-bearing cylinder respectively. A snap ring is fixed on the load-bearing cylinder between bearing B and bearing C.

[0009] The upper end of the transmission shaft can be fixed to the main arm of the door leaf, and the lower end thereof is inserted into the positioning groove to drive the load-bearing cylinder to rotate.

[0010] Through the above technical scheme, the utility model provides a heavy-duty ground shaft. By fixing the bearing seat to the ground and fixing the transmission shaft to the main arm of the door leaf, the load-bearing cylinder can be driven to rotate through the transmission shaft during the process of opening and closing the door; through the arrangement of bearings A, bearings B and bearings C, each part thereof can bear the load independently, unloading the weight of the door leaf itself, helping to reduce the pressure of a single part, playing a lever effect of moving a thousand pounds with a small force, improving the load-bearing capacity of the entire ground shaft, and being able to withstand the weight of heavy door leaves; and compared with the integral bearing, the arrangement of this structure reduces the length of the bearing, thereby reducing the possibility of bending deformation, further improving the load-bearing capacity, and extending its service life.

[0011] Furthermore, the positioning groove is a polygonal structure, and the lower end of the transmission shaft is provided with a positioning block adapted to the positioning groove.

[0012] Furthermore, the upper end of the transmission shaft is provided with a fixing block in a prismatic structure, and the fixing block can be connected to a main arm on the door leaf.

[0013] Furthermore, the height of the transmission shaft can be adjusted according to the height of the floor; the fixing block can also be set to a suitable shape according to accessories of different factories and brands.

[0014] Preferably, it also includes two load-bearing washers, which are rotatably connected to the lower end of the bearing A and the upper end of the bearing A. The structure can evenly distribute the load during the working process to the bearing A to prevent local overload, thereby ensuring the safe and stable operation of the earth shaft; and can effectively absorb and isolate the noise generated during the working of the earth shaft; and can also buffer and reduce the vibration and impact generated during the working process of the earth shaft to a certain extent, thereby extending the service life of the earth shaft.

[0015] Preferably, it also includes a bottom plate, which is provided with a through hole one, through which the lower end of the bearing seat passes, and an anti-slip ring is formed on the outer surface of the upper end, and the lower end surface of the anti-slip ring abuts against the wall of the through hole one.

[0016] Furthermore, it also includes a support shell and a cover plate, which are detachably connected and form a placement cavity inside, and the support shell can be fixed on the ground; the bottom plate is detachably connected to the placement cavity and the support shell and the cover plate are respectively provided with through hole two and through hole three corresponding to through hole one, and the lower end of the bearing seat passes through through hole three, through hole one, and through hole two in sequence and is fixed to the ground.

[0017] Furthermore, the support shell is arranged in a cubic structure with an open top and its length, width and height are fixed.

[0018] Furthermore, the bottom plate and the support shell are provided with a plurality of corresponding connection holes one and are connected by bolt one; the bottom plate and the cover plate are provided with a plurality of corresponding connection holes two and are connected by bolt two.

[0019] Furthermore, the bearing seat is interference fit with the first through hole, the second through hole and the third through hole.

[0020] Through the setting of the above technical scheme and the fixed size of the support shell, the position of the ground axis can be arranged in advance when the ground axis is installed, which perfectly solves the troubles caused by unevenness, tilt and size errors in construction, and improves the accuracy of the size and flatness of the ground axis installation; the cover plate can be used to decorate the decorative surface.

[0021] Preferably, a dustproof assembly is also included, which includes a dustproof ring and a dustproof cover. The dustproof ring is set on the upper end of the load-bearing cylinder corresponding to the bearing B; the dustproof cover is fixed at three places of the through hole and covers the upper end surface of the load-bearing cylinder. The setting of this structure can effectively prevent sand and dust from damaging the bearing.

[0022] Preferably, it also includes an anti-skid sleeve, which is arranged on the outer surface of the lower part of the bearing seat.

[0023] Furthermore, it also includes an anti-slip ring, which can be a spring ring, which is located inside the anti-slip sleeve and is sleeved on the outer surface of the bearing seat.

[0024] Preferably, the ground axis can be used for two types of installation, one is a vertical two-way opening installation; the other is an eccentric installation, the door is opened in one direction, and can be opened 180 degrees on one side. The door opening position can be completely opened, and the space is released to maximize the passage.

[0025] Through the above technical scheme, it can be known that compared with the prior art, the utility model discloses a heavy-duty ground axis. Compared with the prior art, the utility model fixes the bearing seat to the ground, and the transmission shaft is fixed to the main arm of the door leaf, so that the load-bearing cylinder can be driven to rotate by the transmission shaft during the process of opening and closing the door; through the arrangement of bearings A, bearings B and bearings C, each part thereof can bear the load independently, and the weight of the door leaf itself is unloaded, which helps to reduce the pressure of a single part, plays a lever effect of moving a thousand pounds with a little effort, improves the load-bearing capacity of the entire ground axis, and can withstand the weight of heavy door leaves; and the arrangement of this structure reduces the length of the bearing compared to the integral bearing, thereby reducing the possibility of bending and deformation, further improving the load-bearing capacity, and extending its service life; through the fixed size of the support shell, the position of the ground axis can be arranged in advance when the ground axis is installed, perfectly solving the troubles caused by unevenness, tilt, and size errors during construction, and improving the accuracy of the size and flatness of the ground axis installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0027] Figure 1 The utility model is a structural schematic diagram of a heavy-duty earth axis.

[0028] Figure 2 The utility model is an exploded view of a heavy-duty ground axis.

[0029] Among them, 1 is a bearing seat; 101 is a mounting groove; 102 is an anti-dropping retaining ring; 2 is a load-bearing cylinder; 201 is a positioning groove; 3 is a transmission shaft; 301 is a fixing block; 302 is a positioning block; 4 is a bearing; 401 is a bearing A; 402 is a bearing B; 403 is a bearing C; 5 is a retaining ring; 6 is a load-bearing gasket; 7 is a base plate; 701 is a through hole one; 702 is a connecting hole one; 703 is a connecting hole two; 8 is a support shell; 801 is a through hole two; 9 is a cover plate; 901 is a through hole three; 10 is a dustproof component; 1001 is a dustproof ring; 1002 is a dustproof cover; 11 is an anti-slip sleeve; 12 is a placement cavity. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the utility model are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] See attached Figure 1-2 The embodiment of the utility model discloses a heavy-duty ground shaft, which can be fixed to the main arm of the door leaf, including: a bearing seat 1, a load-bearing cylinder 2, a bearing 4, a clamping ring 5 and a transmission shaft 3; a mounting groove 101 is opened at the upper end of the bearing seat 1;

[0032] A positioning groove 201 is provided at the upper end of the load-bearing cylinder 2. The bearing 4 includes a bearing A401, a bearing B402 and a bearing C403. The bearing A401 is assembled in the mounting groove 101. The bottom end of the load-bearing cylinder 2 is rotatably connected to the inner ring of the bearing A401. The bearings B402 and C403 are assembled in the mounting groove 101 at intervals, and the inner rings of the two are rotatably connected to the outer wall of the load-bearing cylinder 2 respectively. The snap ring 5 is fixed on the load-bearing cylinder 2 between the bearings B402 and C403.

[0033] The upper end of the transmission shaft 3 can be fixed to the main arm of the door leaf, and the lower end thereof is inserted into the positioning groove 201 to drive the load-bearing cylinder 2 to rotate.

[0034] Specifically, the height of the transmission shaft 3 can be adjusted according to the height of the floor; the positioning groove 201 is a polygonal structure, and the lower end of the transmission shaft 3 has a positioning block 302 adapted to the positioning groove 201. The upper end of the transmission shaft 3 has a fixing block 301 in a prismatic structure, and the fixing block 301 can be connected to the main arm on the door leaf.

[0035] Specifically, the ground axis can be used for two types of installation, one is a vertical two-way opening installation; the other is an eccentric installation, the door opens in one direction, can be opened 180 degrees on one side, the door opening position can be completely opened, the space is released and the passage is maximized.

[0036] In some specific implementation examples, it also includes a load-bearing gasket 6, and there are two load-bearing gaskets 6, which are rotatably connected to the lower end of the bearing A401 and the upper end of the bearing A401 respectively.

[0037] In some other specific implementation examples, a base plate 7 is further included, the base plate 7 is provided with a through hole 701, the lower end of the bearing seat 1 passes through the through hole 701, and an anti-slip ring 102 is formed on the outer surface of the upper end thereof, and the lower end surface of the anti-slip ring 102 abuts against the wall of the through hole 701.

[0038] Specifically, it also includes a support shell 8 and a cover plate 9, which are detachably connected and form a placement cavity 12 inside, and the support shell 8 can be fixed on the ground; the bottom plate 7 is detachably connected to the placement cavity 12, and the support shell 8 and the cover plate 9 are respectively provided with a second through hole 801 and a third through hole 901 corresponding to the first through hole 701, and the lower end of the bearing seat 1 passes through the third through hole 901, the first through hole 701, and the second through hole 801 in sequence and is fixed on the ground. The bearing seat 1 is interference fit with the first through hole 701, the second through hole 801, and the third through hole 901.

[0039] The bottom plate 7 and the support shell 8 are provided with a plurality of corresponding connection holes 702 and are connected by bolt 1; the bottom plate 7 and the cover plate 9 are provided with a plurality of corresponding connection holes 703 and are connected by bolt 2.

[0040] Specifically, the support shell 8 is arranged in a cubic structure with an open top and its length, width and height are fixed.

[0041] In other specific implementation examples, a dustproof component 10 is also included. The dustproof component 10 includes a dustproof ring 1001 and a dustproof cover 1002. The dustproof ring 1001 is mounted on the upper end of the bearing B402 corresponding to the load-bearing cylinder 2; the dustproof cover 1002 is fixed at the through hole three 901 and covers the upper end surface of the load-bearing cylinder 2.

[0042] In some other specific implementation examples, an anti-slip sleeve 11 is further included, and the anti-slip sleeve 11 is sleeved on the lower outer surface of the bearing seat 1.

[0043] Specifically, it also includes an anti-slip ring, which is located inside the anti-slip sleeve 11 and sleeved on the outer surface of the bearing seat 1.

[0044] The heavy-duty ground shaft designed according to the utility model fixes the bearing seat to the ground, fixes the transmission shaft to the main arm of the door leaf, and can drive the load-bearing cylinder to rotate through the transmission shaft during the process of opening and closing the door; through the arrangement of bearings A, bearings B and bearings C, each part thereof can bear the load independently, unloading the weight of the door leaf itself, helping to reduce the pressure of a single part, playing a lever effect of moving a thousand pounds with a little effort, improving the load-bearing capacity of the entire ground shaft, and being able to withstand the weight of heavy door leaves; and compared with the integral bearing, the arrangement of this structure reduces the length of the bearing, thereby reducing the possibility of bending and deformation, further improving the load-bearing capacity, and extending its service life; through the fixed size of the support shell, the position of the ground shaft can be arranged in advance when the ground shaft is installed, perfectly solving the troubles caused by unevenness, tilt, and size errors during construction, and improving the accuracy of the size and flatness of the ground shaft installation.

[0045] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0046] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A heavy-duty ground axis, which can be fixed to the main arm of a door leaf, characterized in that: include: A bearing seat (1), a load-bearing cylinder (2), a bearing (4), a snap ring (5) and a transmission shaft (3); a mounting groove (101) is provided at the upper end of the bearing seat (1); The upper end of the load-bearing cylinder (2) is provided with a positioning groove (201); the bearing (4) comprises a bearing A (401), a bearing B (402) and a bearing C (403); the bearing A (401) is assembled in the mounting groove (101); the bottom end of the load-bearing cylinder (2) is rotatably connected to the inner ring of the bearing A (401); the bearing B (402) and the bearing C (403) are assembled in the mounting groove (101) at intervals and the inner rings of the two are rotatably connected to the outer wall of the load-bearing cylinder (2); the retaining ring (5) is fixed on the load-bearing cylinder (2) between the bearing B (402) and the bearing C (403); The upper end of the transmission shaft (3) can be fixed to the main arm of the door leaf, and the lower end thereof is inserted into the positioning groove (201) to drive the load-bearing cylinder (2) to rotate.

2. A heavy-duty ground axis according to claim 1, characterized in that: The positioning groove (201) is arranged in a polygonal structure, and the lower end of the transmission shaft (3) is provided with a positioning block (302) adapted to the positioning groove (201).

3. A heavy-duty ground axis according to claim 1, characterized in that: The upper end of the transmission shaft (3) is provided with a fixing block (301) arranged in a prism structure, and the fixing block (301) can be connected to the main arm on the door leaf.

4. A heavy-duty ground axis according to claim 1, characterized in that: It also includes a load-bearing gasket (6), wherein the load-bearing gasket (6) is in two pieces and is rotatably connected to the lower end of the bearing A (401) and the upper end of the bearing A (401) respectively.

5. A heavy-duty ground axis according to claim 1, characterized in that: It also includes a bottom plate (7), the bottom plate (7) is provided with a through hole (701), the lower end of the bearing seat (1) passes through the through hole (701), and the outer surface of the upper end thereof is convexly formed with an anti-slip ring (102), and the lower end surface of the anti-slip ring (102) is in contact with the wall of the through hole (701).

6. A heavy-duty ground axis according to claim 5, characterized in that: The bearing housing (1) further comprises a support shell (8) and a cover plate (9), wherein the support shell (8) and the cover plate (9) are detachably connected and form a placement cavity (12) therein, and the support shell (8) can be fixed on the ground; the bottom plate (7) is detachably connected to the placement cavity (12), and the support shell (8) and the cover plate (9) are respectively provided with a second through hole (801) and a third through hole (901) corresponding to the first through hole (701); the lower end of the bearing seat (1) passes through the third through hole (901), the first through hole (701), and the second through hole (801) in sequence and is fixed on the ground.

7. A heavy-duty ground axis according to claim 6, characterized in that: The bottom plate (7) and the support shell (8) are provided with a plurality of corresponding connection holes (702) and are connected via bolts (701); the bottom plate (7) and the cover plate (9) are provided with a plurality of corresponding connection holes (703) and are connected via bolts (702).

8. A heavy-duty ground axis according to claim 6, characterized in that: It also includes a dustproof component (10), the dustproof component (10) includes a dustproof ring (1001) and a dustproof cover (1002), the dustproof ring (1001) is sleeved on the upper end of the load-bearing cylinder (2) corresponding to the bearing B (402); the dustproof cover (1002) is fixed at the through hole three (901) and covers the upper end surface of the load-bearing cylinder (2).

9. A heavy-duty ground axis according to claim 1, characterized in that: It also comprises an anti-slip sleeve (11), wherein the anti-slip sleeve (11) is sleeved on the lower outer surface of the bearing seat (1).

10. A heavy-duty ground shaft according to claim 9, characterized in that: It also includes an anti-slip ring, which is located inside the anti-slip sleeve (11) and sleeved on the outer surface of the bearing seat (1).

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