CN217328334U

CN217328334U - Speed reducer and Marshall stability tester comprising same

Info

Publication number: CN217328334U
Application number: CN202122854296.1U
Authority: CN
Inventors: 李俊民
Original assignee: Beijing Zhongkejianyi Electronic Technology Co ltd
Current assignee: Beijing Zhongkejianyi Electronic Technology Co ltd
Priority date: 2021-11-19
Filing date: 2021-11-19
Publication date: 2022-08-30
Anticipated expiration: 2031-11-19

Abstract

The utility model relates to a speed reducer and contain its marshall stability tester, marshall stability tester includes the quick-witted case, set up in elevating system in the quick-witted case, set up in the brace table at elevating system top, set up in the type of falling U support above the quick-witted case, set up in the pressure sensor on the type of falling U support, set up in brace table and pressure sensor between the pressurization anchor clamps, elevating system includes branch, motor and the speed reducer that sets up fixedly in the quick-witted case, the speed reducer includes the casing, sets up rotation input shaft and the lifting screw on the casing, rotation input shaft with the lifting screw passes through worm gear drive mechanism transmission connection, the casing includes the open cylindric steel pipe in both ends to and set up in the apron at cylindric steel pipe both ends through the bolt; and the like. The utility model provides a marshall stability tester among the prior art carry out speed reducer casing and add man-hour defect that wastes time and energy, production efficiency is low.

Description

Speed reducer and Marshall stability tester comprising same

Technical Field

The utility model belongs to bituminous mixture's quality detection device, concretely relates to speed reducer and contain its marshall stability tester.

Background

The marshall stability tester generally comprises a case, a cross beam arranged above the case, a pressure sensor arranged on the cross beam, a supporting table arranged above the case through an elevating mechanism, and a pressurizing clamp arranged between the supporting table and the pressure sensor.

The Marshall stability tester on the market at present has the following defects: 1) in order to guarantee the accuracy that the determinand stability detected, reduce the error that the stability detected, marshall stability apparatus on the existing market usually can be provided with the location arch on a supporting bench, set up positioning groove on the anchor clamps of pressurizeing down, realize the location of pressurization anchor clamps through location arch and positioning groove, thereby make pressure sensor, the central line of pressurization anchor clamps and supporting bench can coincide, adopt this kind of scheme to fix a position, the shortcoming of existence is: pressurization anchor clamps need move in order to realize the installation in the vertical direction during test piece installation, and when inserting positioning groove with the location arch, because the sheltering from of pressurization anchor clamps and experiment, very difficult one step of installation targets in place, often need to remove about and realize the centering cooperation between them, and the operation is wasted time and energy. 2) The shell of the speed reducer used by the lifting mechanism of the prior Marshall stabilizer is usually an iron casting, and machine tool processing is needed during production, so that the time and labor are wasted, the production efficiency is low, and the cost is high.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects that the speed reducer shell among the prior art wastes time and energy when processing, and the production efficiency is low, and the Marshall stability tester that provides a speed reducer and contain it is provided.

In order to achieve the purpose, the utility model adopts the following technical proposal:

the utility model provides a speed reducer, includes the casing, sets up rotation input shaft and the lifting screw on the casing, rotate the input shaft with the lifting screw passes through worm gear drive mechanism and connects, the casing includes the open cylindric steel pipe in both ends to and set up through the bolt in the apron at cylindric steel pipe both ends.

Furthermore, the worm and gear transmission mechanism comprises a worm gear which is rotatably arranged in the shell through a pressure bearing, and a worm which is rotatably arranged on the shell, the worm extends out of the shell and is arranged on the rotary input shaft, the worm gear is meshed with the worm and is connected with the worm, and the lifting screw penetrates through the worm gear and is in threaded connection with the worm gear.

The utility model provides a marshall stability tester of speed reducer, includes quick-witted case, slide set up in the brace table at machine roof portion, the drive the gliding elevating system of brace table, set up in the type of falling U support of machine case top, set up in pressure sensor on the type of falling U support, set up in brace table with pressurization anchor clamps between the pressure sensor, elevating system including fixed set up in quick-witted incasement motor with the speed reducer, the brace table set up in the lifting screw's of speed reducer top, and with the lifting screw rotates to be connected, the motor shaft of motor with the rotation input shaft transmission of speed reducer is connected.

Furthermore, the rotation input shaft of the speed reducer and the motor shaft of the motor are in transmission connection through a belt pulley and a belt.

Further, the pressurizing clamp is hung at the bottom of the pressure sensor through a centering mechanism.

Further, the centering mechanism comprises a hanging buckle which is fixedly arranged at the bottom of the pressure sensor and has a T-shaped cross section, and an inverted U-shaped hanging plate which is arranged at the top of the pressurizing clamp, wherein a sliding hole with an opening at one side is formed in the inverted U-shaped hanging plate, and the vertical part of the hanging buckle is slidably arranged in the sliding hole and is matched with the sliding hole; the transverse part A of the hanging buckle is arranged below the transverse part B of the inverted U-shaped hanging plate and is abutted against the transverse part B of the inverted U-shaped hanging plate.

Furthermore, the pressurizing fixture is formed by closing an upper half fixture and a lower half fixture, the upper half fixture is hung at the bottom of the pressure sensor, the lower half fixture is placed on the supporting table, guide posts are arranged at two ends of the lower half fixture, guide holes are arranged at two ends of the upper half fixture, and the guide posts are arranged in the guide holes and slide along the guide holes.

Furthermore, a displacement sensor is also arranged on the pressurizing clamp.

Further, be provided with the through-hole on the first anchor clamps, be provided with the screw hole on the lateral wall of through-hole, be provided with the tight bolt in top in the screw hole, be provided with the slot on the second anchor clamps, displacement sensor's bottom is passed insert behind the through-hole and is located in the slot, the tight bolt in top with the displacement sensor butt.

Compared with the prior art, the beneficial effects of the utility model reside in that:

the utility model discloses constitute the casing of speed reducer by the apron of cylindric steel pipe and both sides, carry out the speed reducer man-hour, only need the fashioned steel pipe of intercepting to turning the through-hole on the steel pipe, then installing the worm gear structure, will lap at last through the screw install in the both ends of steel pipe seal can, relatively traditional speed reducer casing adopts the production mounting means of lathe, easy and simple to handle, quick, production efficiency is high, and is with low costs. The pressurizing clamp is hung at the bottom of the pressure sensor through the centering mechanism, so that the pressurizing clamp, the pressure sensor and the supporting table can be positioned on the same straight line, the stability detection accuracy of an object to be detected is ensured, and the stability detection error is reduced; the utility model discloses centering mechanism includes that the cross-section is for hanging of the type of falling T and detaining and the type of falling U link plate, and through set up the slide opening on the type of falling U link plate, during the use, only need align to hang the knot with the slide opening on the pressurization anchor clamps, then the horizontal direction promotes the installation that pressurization anchor clamps can realize pressurization anchor clamps, when the inboard edge of slide opening with hang when detaining the butt, when pressurization anchor clamps push away motionlessly promptly, can realize the location of pressurization anchor clamps, it is compared and need move pressurization anchor clamps and blind searching location hole site from top to bottom in traditional positioner, it is more simple and convenient to operate.

Drawings

Fig. 1 is a perspective view of a speed reducer according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a speed reducer according to an embodiment of the present invention;

fig. 3 is a perspective view of an embodiment of the present invention;

fig. 4 is a partial cross-sectional view of an embodiment of the present invention

Fig. 5 is a schematic structural diagram of an embodiment of the present invention;

fig. 6 is a schematic structural view of a pressing jig (with a displacement sensor) according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a pressing jig according to an embodiment of the present invention (without a displacement sensor);

in the figure: 1. the device comprises a shell, 2, a rotating input shaft, 3, a lifting screw, 4, a worm gear and worm transmission mechanism, 5, a cylindrical steel pipe, 6, a cover plate, 7, a pressure bearing, 8, a worm gear, 9, a worm, 10, a case, 11, a support table, 12, a pressure sensor, 13, a pressurizing clamp, 14, a motor, 15, a speed reducer, 16, a hanging buckle, 17, an inverted U-shaped hanging plate, 18, a sliding hole, 19, an upper half clamp, 20, a lower half clamp, 21, a guide post, 22, a displacement sensor, 23, a jacking bolt, 24, a slot, 25, a through hole, 26, a screw hole, 27, a vertical part, 28, a horizontal part A, 29 and an inverted U-shaped support.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The present invention will be described in further detail with reference to the accompanying drawings.

Example 1:

fig. 1-2 show an embodiment of a speed reducer, including casing 1, set up rotation input shaft 2 and lifting screw 3 on casing 1, rotation input shaft 2 with lifting screw 3 passes through worm gear 4 and connects, casing 1 includes the open cylindric steel pipe in both ends 5 to and set up through the bolt in the apron 6 at cylindric steel pipe 5 both ends.

As an embodiment of the present invention, the cylindrical steel pipe 5 is a formed steel pipe. The utility model discloses constitute 1 casing with speed reducer 15 by the cover plate 6 of cylindric steel pipe 5 and both sides, carry out speed reducer 15 and add man-hour, only need the intercepting shaping steel pipe to turning through-hole 25 on the steel pipe, then install 8 worm 9 structures on the worm wheel, install cover plate 6 at last through the screw in the both ends of steel pipe seal can, 15 casings of relatively traditional speed reducer adopt the production mounting means of lathe, easy and simple to handle, quick, production efficiency is high, and is with low costs.

As an embodiment of the utility model relates to a speed reducer, worm gear 4 include through pressure bearing 7 rotate set up in worm wheel 8 in the casing 1 rotates the worm 9 that sets up on casing 1, worm 9 extends set up behind the casing 1 rotate input shaft 2, worm wheel 8 with worm 9 meshes the connection, lifting screw 3 runs through worm wheel 8, and with 8 threaded connection of worm wheel.

Example 2:

1-7, an embodiment of the marshall stability tester of the present invention comprises a case 10, a supporting platform 11 slidably disposed on the top of the case 10, an elevating mechanism for driving the supporting platform 11 to slide, an inverted U-shaped bracket 29 disposed above the case 10, a pressure sensor 12 disposed on the inverted U-shaped bracket 29, a pressurizing fixture 13 disposed between the supporting platform 11 and the pressure sensor 12, the lifting mechanism comprises a motor 14 and a speed reducer 15 which are fixedly arranged in the case 10, the speed reducer 15 comprises a shell 1, a rotary input shaft 2 and a lifting screw rod 3 which are arranged on the shell 1, the rotating input shaft 2 is connected with the lifting screw 3 through a worm gear transmission mechanism 4, and the shell 1 comprises a cylindrical steel pipe 5 with two open ends and cover plates 6 arranged at two ends of the cylindrical steel pipe 5 through bolts; the support table 11 is arranged at the top of the lifting screw 3 of the speed reducer 15 and is rotationally connected with the lifting screw 3, and a motor shaft of the motor 14 is in transmission connection with the rotation input shaft 2 of the speed reducer 15.

As an embodiment of the utility model relates to a marshall stability tester, worm gear 4 include through pressure bearing 7 rotate set up in worm wheel 8 in the casing 1 rotates the worm 9 that sets up on casing 1, worm 9 extends set up behind the casing 1 rotate input shaft 2, worm wheel 8 with worm 9 meshes the connection, lifting screw 3 runs through worm wheel 8, and with 8 threaded connection of worm wheel.

As an embodiment of the present invention, the rotation input shaft 2 of the speed reducer 15 and the motor shaft of the motor 14 are connected by a belt pulley and a belt transmission.

As an embodiment of the present invention, the pressurizing jig 13 is hung on the bottom of the pressure sensor 12 through the centering mechanism. The utility model discloses hang pressurization anchor clamps 13 through centering mechanism and locate pressure sensor 12's bottom to make pressurization anchor clamps 13, pressure sensor 12 and brace table 11 can be in a straight line, guaranteed the accuracy that the article stability that awaits measuring detected, reduce the error that the stability detected.

Further, the centering mechanism comprises a hanging buckle 16 which is fixedly arranged at the bottom of the pressure sensor 12 and has a T-shaped cross section, and an inverted U-shaped hanging plate 17 which is arranged at the top of the pressurizing clamp 13, wherein a sliding hole 18 with an opening at one side is formed in the inverted U-shaped hanging plate 17, and a vertical part 27 of the hanging buckle 16 is slidably arranged in the sliding hole 18 and is matched with the sliding hole 18; the transverse part A of the hanging buckle 16 is arranged below the transverse part B of the inverted U-shaped hanging plate 17 and is abutted against the transverse part B of the inverted U-shaped hanging plate 17.

Further, the pressurizing fixture 13 is formed by combining an upper half fixture 19 and a lower half fixture 20, the upper half fixture 19 is hung at the bottom of the pressure sensor 12, the lower half fixture 20 is placed on the supporting table 11, guide posts 21 are arranged at two ends of the lower half fixture 20, guide holes are arranged at two ends of the upper half fixture 19, and the guide posts 21 are arranged in the guide holes and slide along the guide holes. The utility model discloses centering mechanism includes that the cross-section is for hanging of the type of falling T and detaining 16 and the type of falling U link plate 17, and through set up slide opening 18 on the type of falling U link plate 17, during the use, it detains 16 only to need to hang the slide opening 18 alignment on the pressurization anchor clamps 13, then the horizontal direction promotes the installation that pressurization anchor clamps 13 can realize pressurization anchor clamps 13, when the inboard side of slide opening 18 with hang when detaining 16 butts, when pressurization anchor clamps 13 pushed down promptly, can realize the location of pressurization anchor clamps 13, it is compared in traditional positioner and need move pressurization anchor clamps 13 from top to bottom and the blind location hole site of looking for, it is more simple and convenient to operate.

As an embodiment of the marshall stability tester of the present invention, the pressurizing jig 13 is further provided with a displacement sensor 22.

Further, be provided with through-hole 25 on the first anchor clamps 19, be provided with screw hole 26 on the lateral wall of through-hole 25, be provided with puller bolt 23 in the screw hole 26, be provided with slot 24 on the second anchor clamps 20, displacement sensor 22's bottom is passed insert behind the through-hole 25 and is located in the slot 24, puller bolt 23 with displacement sensor 22 butt.

The above-described embodiments are merely preferred examples of the present invention and are not exhaustive of the possible implementations of the present invention. Any obvious modifications to the above would be obvious to those of ordinary skill in the art, but would not bring the invention so modified beyond the spirit and scope of the present invention.

Claims

1. The speed reducer is characterized by comprising a shell (1), and a rotating input shaft (2) and a lifting screw (3) which are arranged on the shell (1), wherein the rotating input shaft (2) is connected with the lifting screw (3) through a worm gear transmission mechanism (4), and the shell (1) comprises a cylindrical steel pipe (5) with two open ends and cover plates (6) arranged at two ends of the cylindrical steel pipe (5) through bolts.

2. A speed reducer according to claim 1, wherein the worm gear and worm transmission mechanism (4) comprises a worm wheel (8) rotatably disposed in the housing (1) through a pressure bearing (7), and a worm (9) rotatably disposed on the housing (1), the worm (9) extends out of the housing (1) to be disposed on the rotary input shaft (2), the worm wheel (8) is engaged with the worm (9), and the lifting screw (3) penetrates through the worm wheel (8) and is in threaded connection with the worm wheel (8).

3. A Marshall stability tester comprising the reducer according to any one of claims 1-2, characterized by comprising a case (10), a support (11) slidably disposed on the top of the case (10), an elevating mechanism driving the support (11) to slide, an inverted U-shaped bracket (29) disposed above the case (10), a pressure sensor (12) disposed on the inverted U-shaped bracket (29), and a pressure clamp (13) disposed between the support (11) and the pressure sensor (12), wherein the elevating mechanism comprises a motor (14) fixedly disposed in the case (10) and the reducer (15) according to any one of claims 1-2, the support (11) is disposed on the top of a lifting screw (3) of the reducer (15) and is rotatably connected with the lifting screw (3), and a motor shaft of the motor (14) is in transmission connection with a rotation input shaft (2) of the speed reducer (15).

4. A marshall stability tester as claimed in claim 3, wherein the rotation input shaft (2) of the reducer (15) and the motor shaft of the motor (14) are connected by belt pulley and belt transmission.

5. A marshall stability tester as claimed in claim 3, wherein the pressure clamp (13) is suspended from the bottom of the pressure sensor (12) by a centering mechanism.

6. The marshall stability tester of claim 5, wherein the centering mechanism comprises a hanging buckle (16) which is fixedly arranged at the bottom of the pressure sensor (12) and has a T-shaped section, and an inverted-U-shaped hanging plate (17) which is arranged at the top of the pressurizing clamp (13), wherein a sliding hole (18) with an opening at one side is formed in the inverted-U-shaped hanging plate (17), and a vertical part (27) of the hanging buckle (16) is slidably arranged in the sliding hole (18) and is matched with the sliding hole (18); the transverse part A (28) of the hanging buckle (16) is arranged below the transverse part B of the inverted U-shaped hanging plate (17) and is abutted against the transverse part B of the inverted U-shaped hanging plate (17).

7. The marshall stability tester of claim 5, wherein the pressurizing fixture (13) is formed by combining an upper half fixture (19) and a lower half fixture (20), the upper half fixture (19) is hung at the bottom of the pressure sensor (12), the lower half fixture (20) is placed on the supporting table (11), guide posts (21) are arranged at two ends of the lower half fixture (20), guide holes are arranged at two ends of the upper half fixture (19), and the guide posts (21) are arranged in the guide holes and slide along the guide holes.

8. A Marshall stability tester as claimed in claim 7, wherein the pressure clamp (13) is further provided with a displacement sensor (22).

9. The marshall stability tester of claim 8, wherein the upper half fixture (19) is provided with a through hole (25), the side wall of the through hole (25) is provided with a screw hole (26), the screw hole (26) is provided with a puller bolt (23), the lower half fixture (20) is provided with a slot (24), the bottom end of the displacement sensor (22) passes through the through hole (25) and then is inserted into the slot (24), and the puller bolt (23) abuts against the displacement sensor (22).