Upper bearing seat of lead screw

Abstract

The utility model discloses an upper bearing seat of a lead screw, which belongs to the technical field of bearing seats and comprises a bearing seat body, a mounting groove formed in the bearing seat body and a fixing frame mounted below the bearing seat body, and a rotating shaft is rotatably connected to the middle of the top end of the fixing frame. The side wall, located above the fixing frame, of the rotating shaft is provided with an external thread, the bottom end of the rotating shaft is fixedly connected with a ratchet wheel, the two sides of the ratchet wheel are both provided with connecting bases connected with the fixing frame, the connecting bases are fixedly connected with shaft pins, the shaft pins are rotationally connected with pawls meshed with the ratchet wheel, and the ratchet wheel is fixedly connected with the rotating shaft. The pawls are meshed with the ratchet wheel under the elastic acting force of the tension spring, reverse rotation of the ratchet wheel can be effectively prevented, meanwhile, the symmetrically-arranged pawls tightly hold the ratchet wheel under the elastic force of the tension spring, forward rotation of the ratchet wheel can be effectively prevented, therefore, the bearing seat body has a good positioning effect, and the working precision of a lead screw is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of bearing seat, more specifically, a screw rod bearing seat. BACKGROUND

[0002] The screw rod bearing seat is a mechanical component used to support and fix the screw rod, commonly used in high-precision mechanical equipment such as machine tools, CNC machine tools, and automated production lines. Its main function is to ensure the smooth and high-precision movement of the screw rod, reduce vibration and friction, and thus improve the overall performance of the mechanical system.

[0003] Patent No. CN221838760U discloses a high-speed ball screw bearing seat, which comprises a fixed frame, a bearing seat body is arranged at the upper end of the fixed frame, an installation slot is formed in the bearing seat body, an adjusting structure is arranged in the fixed frame, the adjusting structure comprises an adjusting screw rod, a reserved slot is formed at the lower end of the bearing seat body, and a rotating bearing seat is fixedly arranged in the reserved slot, the upper end of the adjusting screw rod is rotatably connected with the rotating bearing seat, a guide rod is fixedly arranged at the upper end of the fixed frame, and a guide cylinder is fixedly arranged at the front end of the bearing seat body. The height of the bearing seat body can be adjusted, and the connection and installation of different installation surfaces can be realized.

[0004] However, the patent No. CN221838760U rotating handle, so that the adjusting screw rod rises, so that the bearing seat body rises, and the height is adjusted according to the height of the supporting screw rod. Since the screw rod will cause slight vibration of the bearing seat body during high-speed rotation, the vibration will cause the adjusting screw rod to loosen, resulting in poor positioning effect of the bearing seat body, which will affect the working precision of the screw rod. Therefore, we propose a screw rod bearing seat to solve the above problems. Utility model content

[0005] 1. Technical problem to be solved

[0006] In view of the problems existing in the prior art, the utility model aims to provide a screw rod bearing seat, which is characterized in that the pawl is engaged with the ratchet wheel under the elastic force of the tension spring, effectively preventing the ratchet wheel from rotating in reverse direction. At the same time, the symmetrically arranged pawls tightly hold the ratchet wheel under the elastic force of the tension spring, effectively preventing the ratchet wheel from rotating in forward direction, thus achieving good positioning effect of the bearing seat body and ensuring the working precision of the screw rod.

[0007] 2. Technical scheme

[0008] To solve the above problems, the utility model adopts the following technical scheme.

[0009] The utility model provides a bearing seat on screw rod, including bearing seat body, installation groove who sets up on the bearing seat body and the fixed frame who installs below the bearing seat body, the top end middle part of fixed frame is rotatably connected with the pivot, the outer thread is seted up to the side wall of pivot who is located above the fixed frame, the bottom of pivot is fixedly connected with ratchet wheel,

[0010] The utility model discloses a bearing seat on screw rod, including bearing seat body, installation groove who sets up on the bearing seat body and the fixed frame who installs below the bearing seat body, the top end middle part of fixed frame is rotably connected with the pivot, the outer thread is seted up to the side wall of pivot who is located above the fixed frame, the bottom of pivot is fixedly connected with ratchet wheel,

[0011] The utility model discloses a bearing seat on screw rod, including bearing seat body, installation groove who sets up on the bearing seat body and the fixed frame who installs below the bearing seat body, the top end middle part of fixed frame is rotably connected with the pivot, the outer thread is seted up to the side wall of pivot who is located above the fixed frame, the bottom of pivot is fixedly connected with ratchet wheel,

[0012] The utility model discloses a bearing seat on screw rod, including bearing seat body, installation groove who sets up on the bearing seat body and the fixed frame who installs below the bearing seat body, the top end middle part of fixed frame is rotably connected with the pivot, the outer thread is seted up to the side wall of pivot who is located above the fixed frame, the bottom of pivot is fixedly connected with ratchet wheel,

[0013] Further, the side wall of the ratchet wheel is provided with a plurality of impact bead grooves at the radial position of the ratchet wheel.

[0014] Further, the ratchet wheel is provided with an impact bead pin engaged with the impact bead groove.

[0015] Further, the fixed frame is provided with a bearing in interference connection with the pivot.

[0016] Further, the lower surface of the ratchet wheel is provided with an adjusting groove in a hexagonal structure.

[0017] Further, the surface of the stand plate away from the pivot is welded with a reinforcing rib in a right triangle structure, and a plurality of reinforcing ribs are equidistantly arranged.

[0018] Further, the bottom end of the fixed frame is symmetrically provided with an assembly hole.

[0019] 3. Beneficial effects

[0020] Compared with the prior art, the utility model has the advantages that:

[0021] (1) the scheme, the driving ratchet wheel makes the rotating shaft relative to the fixed frame synchronous rotation, the outer thread cooperates with the inner thread sleeve, and the dovetail slider cooperates with the dovetail guide groove, so that the mounting groove on the bearing seat body corresponds to the end part of the lead screw, the pawl is engaged with the ratchet wheel under the elastic force of the tension spring, the ratchet wheel can be effectively prevented from rotating reversely, the pawl is tightly held on the ratchet wheel under the elastic force of the tension spring, the ratchet wheel can be effectively prevented from rotating forwardly, so that the bearing seat body has good positioning effect, and the working precision of the lead screw is guaranteed.

[0022] (2) the scheme, the pawl is engaged with the ratchet wheel under the elastic force of the tension spring, the ratchet wheel can be effectively prevented from rotating reversely, the pawl is tightly held on the ratchet wheel under the elastic force of the tension spring, the ratchet wheel can be effectively prevented from rotating forwardly, so that the bearing seat body has good positioning effect, and the working precision of the lead screw is guaranteed. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a three-dimensional structure schematic view of the utility model;

[0024] Figure 2 It is a fixed frame structure schematic view of the utility model;

[0025] Figure 3 It is a ratchet wheel structure schematic view of the utility model;

[0026] Figure 4 It is an enlarged schematic view of part A of the utility model;

[0027] Figure 5 It is a pawl structure schematic view of the utility model;

[0028] Figure 6 It is a bearing seat body structure schematic view of the utility model.

[0029] Explanation of reference numerals in the drawing:

[0030] 1, bearing seat body; 2, mounting groove; 3, fixed frame; 4, rotating shaft; 5, outer thread; 6, ratchet wheel; 7, adjusting groove; 8, connecting seat; 9, shaft pin; 10, pawl; 11, first connecting rod; 12, second connecting rod; 13, tension spring; 14, pearl groove; 15, pearl pin; 16, vertical plate; 17, inner thread sleeve; 18, dovetail guide groove; 19, dovetail slider. DETAILED DESCRIPTION

[0031] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model; Obviously, 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 ordinary skilled in the art without creative labor belong to the protection scope of the utility model.

[0032] Embodiment:

[0033] Please refer to Figures 1-6 A bearing seat on the screw rod comprises a bearing seat body 1, a mounting groove 2 formed on the bearing seat body 1, and a fixing frame 3 mounted below the bearing seat body 1, a rotating shaft 4 is rotationally connected to the middle of the top end of the fixing frame 3, an external thread 5 is formed on the side wall above the fixing frame 3, and a ratchet wheel 6 is fixedly connected to the bottom end of the rotating shaft 4.

[0034] The ratchet wheel 6 is provided with a connecting seat 8 connected to the fixing frame 3 on both sides, an axle pin 9 is fixedly connected to the connecting seat 8, a pawl 10 engaged with the ratchet wheel 6 is rotationally connected to the axle pin 9, a first connecting rod 11 is fixedly connected to the surface of the pawl 10 away from the connecting seat 8, a second connecting rod 12 fixedly connected to the connecting seat 8 is arranged on one side of the axle pin 9, and a tension spring 13 is mounted between the first connecting rod 11 and the second connecting rod 12.

[0035] The rotating shaft 4 is provided with a vertical plate 16 integrally formed with the fixing frame 3 on both sides, and a dovetail guide groove 18 is longitudinally formed on the surface of the vertical plate 16 close to the rotating shaft 4.

[0036] The bottom of the bearing seat body 1 is fixedly connected with an internal thread sleeve 17 screwed with the external thread 5, and the side wall of the bearing seat body 1 is integrally formed with a dovetail sliding block 19 slidably connected with the dovetail guide groove 18.

[0037] It should be noted that when the bearing seat on the screw rod is used, when the screw rod needs to be supported and installed, the rotating shaft 4 is synchronously rotated relative to the fixing frame 3 by driving the ratchet wheel 6, the external thread 5 is screwed into the internal thread sleeve 17, and the dovetail sliding block 19 is slid in the dovetail guide groove 18, so that the mounting groove 2 formed on the bearing seat body 1 corresponds to the end part of the screw rod, the pawl 10 is engaged with the ratchet wheel 6 under the elastic force of the tension spring 13, which can effectively prevent the ratchet wheel 6 from rotating in the reverse direction, and the symmetrically arranged pawls 10 can effectively prevent the ratchet wheel 6 from rotating in the forward direction under the elastic force of the tension spring 13, thereby having a good positioning effect on the bearing seat body 1, and further ensuring the working accuracy of the screw rod.

[0038] As shown in Figure 4 , Figure 5 The side wall of the ratchet wheel 6 is formed with a plurality of impact bead grooves 14 arranged in the radial direction of the ratchet wheel 6, and the pawl 10 is mounted with an impact bead pin 15 engaged with the impact bead groove 14.

[0039] It should be noted that the impact bead pin 15 mounted on the pawl 10 is engaged with the impact bead groove 14 formed on the ratchet wheel 6, which can effectively limit the forward rotation of the ratchet wheel 6, and further improve the positioning effect on the bearing seat body 1.

[0040] As Figure 2 shown, the fixed frame 3 is provided with a bearing connected with the rotating shaft 4 by interference;

[0041] It should be noted that the friction between the rotating shaft 4 and the fixed frame 3 is reduced, and the rotation accuracy of the rotating shaft 4 is ensured.

[0042] As Figure 4 shown, the lower surface of the ratchet wheel 6 is provided with an adjusting groove 7 in a hexagonal structure;

[0043] It should be noted that the end of the hexagonal adjusting rod with a bending structure is combined with the adjusting groove 7, which facilitates the rotation of the ratchet wheel 6.

[0044] As Figure 2 shown, the surface of the vertical plate 16 away from the rotating shaft 4 is welded with a reinforcing rib in a right triangle structure, and the reinforcing rib is equidistantly provided with a plurality of reinforcing ribs.

[0045] It should be noted that the structural strength of the combined part of the vertical plate 16 and the fixed frame 3 is improved.

[0046] The bottom end of the fixed frame 3 is symmetrically provided with an assembly hole.

[0047] In use: when the lead screw needs to be supported and installed, the rotating shaft 4 is driven to rotate synchronously relative to the fixed frame 3 by the ratchet wheel 6, the outer thread 5 is matched with the inner thread sleeve 17, and the dovetail sliding block 19 is matched with the dovetail guide groove 18 to slide, so that the mounting groove 2 provided on the bearing seat body 1 corresponds to the end part of the lead screw, the pawl 10 is engaged with the ratchet wheel 6 under the elastic force of the tension spring 13, which can effectively prevent the ratchet wheel 6 from rotating in reverse direction, and the symmetrically arranged pawl 10 is tightly held on the ratchet wheel 6 under the elastic force of the tension spring 13, which can effectively prevent the ratchet wheel 6 from rotating in forward direction, thereby having a good positioning effect on the bearing seat body 1, and further ensuring the working accuracy of the lead screw.

[0048] The above is only a preferred specific embodiment of the present application; however, the protection scope of the present application is not limited thereto. Any skilled person in the art can make equivalent replacement or change according to the technical scheme and improvement concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A bearing block on lead screw, comprising a bearing block body (1), a mounting groove (2) opened on the bearing block body (1), and a fixing frame (3) mounted below the bearing block body (1), characterized in that: The top end of the fixed frame (3) is rotationally connected with a rotating shaft (4), the rotating shaft (4) is provided with external threads (5) on the side wall above the fixed frame (3), and the bottom end of the rotating shaft (4) is fixedly connected with a ratchet wheel (6). Both sides of the ratchet wheel (6) are provided with connecting seats (8) connected with the fixed frame (3), the connecting seats (8) are fixedly connected with shaft pins (9), the shaft pins (9) are rotationally connected with pawls (10) engaged with the ratchet wheel (6), the surfaces of the pawls (10) away from the connecting seats (8) are fixedly connected with first connecting rods (11), one side of the shaft pin (9) is provided with a second connecting rod (12) fixedly connected with the connecting seat (8), and a tension spring (13) is installed between the second connecting rod (12) and the first connecting rod (11). Both sides of the rotating shaft (4) are provided with vertical plates (16) integrally formed with the fixed frame (3), and dovetail guide grooves (18) are longitudinally formed on the surface of the vertical plate (16) close to the rotating shaft (4). The bottom of the bearing seat body (1) is fixedly connected with an internal thread sleeve (17) screwed with the external threads (5), and the side wall of the bearing seat body (1) is integrally formed with a dovetail sliding block (19) slidably connected with the dovetail guide groove (18).

2. A bearing block for a lead screw as claimed in claim 1, wherein: The side wall of the ratchet wheel (6) is provided with a pearl collision groove (14), and a plurality of pearl collision grooves (14) are arranged at the radial position of the ratchet wheel (6).

3. A bearing block for a lead screw as claimed in claim 2, wherein: The pawl (10) is provided with a pearl collision pin (15) engaged with the pearl collision groove (14).

4. The bearing block of claim 1 wherein: The fixed frame (3) is provided with a bearing in interference connection with the rotating shaft (4).

5. The bearing block of claim 1 wherein: The lower surface of the ratchet wheel (6) is provided with an adjusting groove (7) in a hexagonal structure.

6. The bearing block on lead screw according to claim 1, wherein: The surface of the vertical plate (16) away from the rotating shaft (4) is welded with a reinforcing rib in a right triangle structure, and a plurality of reinforcing ribs are equidistantly arranged.

7. The bearing block of claim 1, wherein: The bottom end of the fixed frame (3) is symmetrically provided with an assembly hole.

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