Marshall compaction apparatus

Abstract

The utility model relates to a Marshall compaction apparatus which comprises a compaction hammer installed at the lower end of a vertical hammer rod, and the vertical hammer rod is vertically arranged on a rack in a sliding mode; the hoisting wheel is rotationally mounted at the upper end of the vertical hammer rod; one end of the hoisting rope is fixed to the rack, the other end of the hoisting rope penetrates through the hoisting wheel to be connected with the winding unit, and the winding unit is used for winding or releasing the hoisting rope so as to link the vertical hammer rod to vertically ascend or descend; the locking unit is used for fixing or unlocking the upper end of the vertical hammer rod, the winding unit is started to be matched with the locking unit, the compaction hammer can hammer a sample in a reciprocating mode, the Marshall compaction apparatus enables the compaction hammer to be kept at a high position when the compaction apparatus is not used for testing, the sample can be conveniently taken and placed, and the compaction efficiency is improved. Therefore, the working efficiency of the compaction apparatus is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of asphalt testing, in particular to a Marshall compactor. Background Art

[0002] In road engineering, Marshall compactors are often used to prepare cylindrical specimens required for Marshall tests, indirect tensile tests, and other tests, so that laboratories can test the physical and mechanical properties of asphalt mixtures.

[0003] The Marshall compactor includes a compacting hammer, which is used to hammer the test material back and forth. By setting the number of hammering times and the force of the hammering, the thickness of the final test material can be obtained, thereby judging the characteristics of the asphalt material. There are some existing technologies, such as Patent No.: 201710359812.9, which discloses a Marshall compactor, including a body, a distribution box for controlling the operation of the body is provided on the side of the body, a workbench is provided on the body, a mold clamping device is provided on the workbench, a guide rod is provided above the mold clamping device, a compacting hammer is movably provided on the guide rod, and a counting sensor is provided on the compacting hammer. Every time the compacting hammer hits, the counting sensor counts once and generates an induction signal; a compacting head is provided at the bottom of the guide rod, and an automatic lifting device for the compacting hammer and a controller are provided at the top of the guide rod. The controller responds to the induction signal of the counting sensor to control the action of the automatic lifting device of the compacting hammer; a slide is provided on the body, and a compacting hammer is provided in the slide Working transmission device; the distribution box is provided with a touch display screen and a switch module for key-controlled automatic lifting device of the compacting hammer, wherein the transmission device includes an active shaft arranged at the lower end of the slide, which is connected to the active shaft and drives the driving motor to work, a driven shaft arranged at the upper end of the slide, a skeleton arranged between the active shaft and the driven shaft, a toothed belt mounted between the driven shaft and the active shaft, and a hammer picking block provided on the toothed belt; the vertical lifting of the above-mentioned compacting hammer mainly depends on the hammer picking block on the toothed belt to lift the handle and then lift the compacting hammer. When the hammer picking block is separated from the handle, the compacting hammer can be vertically lowered to hammer the sample. However, when the compacting instrument is used in the initial stage, it is necessary to control the compacting hammer to lift up so that the loaded sample is placed in the sleeve, so that the compacting hammer can be lifted and reciprocated vertically to hammer the sample. Therefore, the actual method of taking out and putting in the above-mentioned samples is cumbersome, which affects the efficiency of the entire test. Utility Model Content

[0004] The purpose of the utility model is to provide a Marshall compactor, which can keep the compacting hammer at a high position when the compactor is not in a testing state, so as to facilitate the taking and placing of samples and improve the working efficiency of the compactor.

[0005] The following technical solutions are used to solve the technical problems in this utility model:

[0006] A Marshall compactor comprising

[0007] A compacting hammer is mounted on the lower end of a vertical hammer rod, and the vertical hammer rod is vertically slidably mounted on the frame;

[0008] A hoisting wheel, rotatably mounted on the upper end of the vertical hammer rod;

[0009] A hoisting rope, one end of which is fixed to the frame, and the other end of which passes through the hoisting wheel and is connected to a winding unit, wherein the winding unit is used to wind or release the hoisting rope to drive the vertical hammer rod to vertically rise or fall;

[0010] The locking unit is used to fix or unlock the upper end of the vertical hammer rod.

[0011] The utility model also has the following technical features:

[0012] In one embodiment of the present invention, a pointer is provided at the upper end of the vertical hammer rod, and an indicator ruler is provided on the frame. The indicator ruler is vertical, and the pointer points to the indicator ruler.

[0013] In one embodiment of the present invention, a vertical guide sleeve is provided on the frame, and the vertical hammer rod is slidably provided in the vertical guide sleeve.

[0014] In one embodiment of the present invention, the winding unit includes a winding roller, which is arranged horizontally. One end of the lifting rope is connected to the winding roller. A drive shaft is provided at the center of the winding roller. The drive shaft is rotatably mounted on the frame. A driven gear is provided at one end of the drive shaft. The driven gear is connected to the driving gear, and the driving gear is connected to the driving motor.

[0015] In one embodiment of the present invention, a vertical guide groove is provided on the vertical hammer rod, the locking unit includes a positioning hole provided at the lower end of the vertical guide groove, and a locking rod is provided on the frame, and the locking rod and the positioning hole form a plug-in or separate fit.

[0016] In one embodiment of the present utility model, the locking rod is horizontally slidably arranged on the frame, and a telescopic spring is sleeved on the locking rod. The two ends of the telescopic spring are respectively against the locking rod body and the frame. An iron rod is provided at one end of the locking rod extending from the frame, and an electromagnetic coil is provided on the frame. The electromagnetic coil is energized and links the locking rod to slide along the frame.

[0017] In one embodiment of the present invention, the lower end of the vertical hammer rod is threadedly connected to the compacting hammer.

[0018] In an embodiment of the present invention, a vertical sliding hole is provided on the frame, and one end of the pointer extends out of the vertical sliding hole.

[0019] Compared with the existing technology, the beneficial effects of the present invention are reflected in that: when the compactor is actually used, the compacting hammer is installed at the lower end of the vertical hammer rod, and the vertical hammer rod is vertically slidably arranged on the frame, and the upper end of the vertical hammer rod is provided with a lifting wheel, and the winding unit is used to wind or release the lifting rope, so that the vertical hammer rod can be vertically raised or lowered, and when the vertical hammer rod rises to a high position, the locking unit locks the upper end of the vertical hammer rod, so that the compacting hammer can be kept in a high position, which is convenient for replacing or placing the sample, and then the locking unit unlocks the upper end of the vertical hammer rod, and by starting the winding unit and cooperating with the locking unit, the compacting hammer can perform reciprocating hammering on the sample. The Marshall compactor enables the compactor to keep the compacting hammer in a high position when the compactor is not testing, which is convenient for taking and placing the sample, thereby improving the working efficiency of the compactor. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a front view of a Marshall compactor in one embodiment of the present invention;

[0021] Figure 2 It is a left side view of a Marshall compactor in one embodiment of the present invention;

[0022] Figure 3 This is a schematic structural diagram of the connection between the vertical hammer rod and the winding unit in the Marshall compactor in one embodiment of the present invention;

[0023] Figure 4 This is a partial structural diagram of a vertical hammer rod in a Marshall compactor according to one embodiment of the present invention;

[0024] Figure 5 It is a structural schematic diagram of the cooperation between the vertical hammer rod and the locking unit in the Marshall compactor in one embodiment of the present invention. DETAILED DESCRIPTION

[0025] The following describes the embodiments of the present invention through specific examples. Those skilled in the art will readily understand the other advantages and benefits of the present invention from the disclosure herein. The present invention may also be implemented or applied through various other specific embodiments, and the details in this specification may be modified or altered based on different perspectives and applications without departing from the spirit of the present invention.

[0026] It should be noted that the illustrations provided in this embodiment are only used to schematically illustrate the basic concept of the present invention. Therefore, the illustrations only show components related to the present invention and are not drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component can be changed at will, and the component layout type may also be more complicated.

[0027] See Figures 1 to 5 A Marshall compactor includes a compacting hammer 10, which is installed at the lower end of a vertical hammer rod 20, and the vertical hammer rod 20 is vertically slidably arranged on a frame 30; a lifting wheel 21, which is rotatably installed at the upper end of the vertical hammer rod 20; a lifting rope 22, one end of which is fixed to the frame 30, and the other end passes through the lifting wheel 21 and is connected to a winding unit, and the winding unit is used to wind or release the lifting rope 22 to link the vertical hammer rod 20 to rise or fall vertically; a locking unit is used to fix or unlock the upper end of the vertical hammer rod 20.

[0028] When the compactor is actually hammering the sample, the compactor 10 is installed at the lower end of the vertical hammer rod 20, and the vertical hammer rod 20 is vertically slidably set on the frame 30. The upper end of the vertical hammer rod 20 is provided with a lifting wheel 21, and the winding unit is used to wind or release the lifting rope 22, so that the vertical hammer rod 20 can be vertically raised or lowered, and when the vertical hammer rod 20 rises to a high position, the locking unit locks the upper end of the vertical hammer rod 20, so that the compactor 10 can be kept in a high position, which is convenient for replacing or placing the sample, and then the locking unit unlocks the upper end of the vertical hammer rod 20. By starting the winding unit and cooperating with the locking unit, the compactor 10 can perform reciprocating hammering on the sample. The Marshall compactor allows the compactor to keep the compactor in a high position when not testing, which is convenient for taking and placing the sample, thereby improving the working efficiency of the compactor.

[0029] In one embodiment, see Figure 1 In order to conveniently observe the hammering depth of the sample and indirectly obtain the thickness of the sample after hammering, a pointer 23 is provided at the upper end of the vertical hammer rod 20, and an indicator ruler 31 is provided on the frame 30. The indicator ruler 31 is vertical, and the pointer 23 points to the indicator ruler 31.

[0030] In one embodiment, the pointer 23 is arranged horizontally, and the upper end of the vertical hammer rod 20 is detachably connected to the pointer 23. When the winding unit drives the vertical hammer rod 20 back and forth, the hammer 10 is driven to hammer the sample. When the set number of hammer strikes is reached, the thickness of the sample can be indirectly obtained by the reading indicated by the pointer 23 on the indicator scale 31.

[0031] In one embodiment, see Figure 3A vertical guide sleeve 32 is provided on the frame 30, and the vertical hammer rod 20 is slidably provided in the vertical guide sleeve 32.

[0032] In one embodiment, the vertical hammer rod 20 is slidably disposed in the vertical guide sleeve 32, so that the vertical hammer rod 20 can be vertically guided to implement hammering of the sample.

[0033] In one embodiment, see Figure 1 and Figure 3 In order to implement the vertical drive of the vertical hammer rod 20, the winding unit includes a winding roller 41, which is arranged horizontally. One end of the lifting rope 22 is connected to the winding roller 41. A driving shaft 42 is provided at the center of the winding roller 41. The driving shaft 42 is rotatably mounted on the frame 30. A driven gear 421 is provided at one end of the driving shaft 42. The driven gear 421 is connected to the driving gear 422, and the driving gear 422 is connected to the driving motor 423.

[0034] In one embodiment, one end of the lifting rope 22 is fixed on the frame 30, and the other end passes through the lifting wheel 21 and is connected to the winding unit. By starting the drive motor 423, the lifting rope 22 is wound, and then the vertical hammer rod 20 is linked to slide along the vertical guide sleeve 32, and the vertical hammer rod 20 is locked by the locking unit. When the sample is replaced or locked, the lifting rope 22 is released by starting the drive motor 423, and then the locking unit releases the vertical hammer rod 20, and then the vertical hammer rod 20 can slide along the vertical guide sleeve 32 to hammer the sample. This cycle is repeated to ensure the effect of hammering the sample.

[0035] In one embodiment, see Figure 4 A vertical guide groove 24 is provided on the vertical hammer rod 20, and the locking unit includes a positioning hole 241 provided at the lower end of the vertical guide groove 24. A locking rod 33 is provided on the frame 30, and the locking rod 33 and the positioning hole 241 form a plug-in or separate fit.

[0036] In one embodiment, see Figure 5 The locking rod 33 slides along the vertical guide groove 24 to implement vertical guidance of the vertical hammer rod 20 and ensure the verticality of the hammer 10.

[0037] In one embodiment, in order to lock and unlock the vertical hammer rod 20, the locking rod 33 is horizontally slidably set on the frame 30, and a telescopic spring 34 is provided on the locking rod 33. The two ends of the telescopic spring 34 are respectively against the rod body of the locking rod 33 and the frame 30. An iron rod is provided at one end of the locking rod 33 extending from the frame 30. An electromagnetic coil 35 is provided on the frame 30. The electromagnetic coil 35 is energized and links the locking rod 33 to slide along the frame 30.

[0038] In one embodiment, when the electromagnetic coil 35 is energized, the locking rod 33 slides along the frame 30 to separate the locking rod 33 from the vertical hammer rod 20 , so that the hammer 10 moves vertically and hammers the sample.

[0039] In another embodiment, the locking rod 33 can be connected to the piston rod of the electric cylinder, and the locking rod 33 can be driven horizontally by starting the electric cylinder to lock or unlock the upper end of the vertical hammer rod 20.

[0040] In one embodiment, in order to facilitate the replacement of the compacting hammer 10 to adjust different hammering forces on the sample, the lower end of the vertical hammer rod 20 is threadedly connected to the compacting hammer 10.

[0041] In one embodiment, in order to guide the pointer 23 , a vertical sliding hole 36 is provided on the frame 30 , and one end of the pointer 23 extends out of the vertical sliding hole 36 .

[0042] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0043] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A Marshall compactor, characterized in that: include A compacting hammer (10) is mounted on the lower end of a vertical hammer rod (20), wherein the vertical hammer rod (20) is vertically slidably mounted on a frame (30); A hoisting wheel (21) rotatably mounted on the upper end of the vertical hammer rod (20); A hoisting rope (22), one end of which is fixed to the frame (30), and the other end of which passes through the hoisting wheel (21) and is connected to a winding unit, wherein the winding unit is used to wind or release the hoisting rope (22) to drive the vertical hammer rod (20) to vertically rise or fall; A locking unit is used to fix or unlock the upper end of the vertical hammer rod (20).

2. A Marshall compactor according to claim 1, characterized in that: A pointer (23) is provided at the upper end of the vertical hammer rod (20), and an indicator ruler (31) is provided on the frame (30). The indicator ruler (31) is vertical, and the pointer (23) points to the indicator ruler (31).

3. A Marshall compactor according to claim 1 or 2, characterized in that: A vertical guide sleeve (32) is provided on the frame (30), and the vertical hammer rod (20) is slidably provided in the vertical guide sleeve (32).

4. A Marshall compactor according to claim 3, characterized in that: The winding unit includes a winding roller (41), the winding roller (41) is arranged horizontally, one end of the hoisting rope (22) is connected to the winding roller (41), a driving shaft (42) is provided at the center of the winding roller (41), the driving shaft (42) is rotatably mounted on the frame (30), one end of the driving shaft (42) is provided with a driven gear (421), the driven gear (421) is connected to a driving gear (422), and the driving gear (422) is connected to a driving motor (423).

5. A Marshall compactor according to claim 4, characterized in that: A vertical guide groove (24) is provided on the vertical hammer rod (20), the locking unit includes a positioning hole (241) provided at the lower end of the vertical guide groove (24), and a locking rod (33) is provided on the frame (30), and the locking rod (33) and the positioning hole (241) form a plug-in or detachable fit.

6. A Marshall compactor according to claim 5, characterized in that: The locking rod (33) is horizontally slidably arranged on the frame (30), and a telescopic spring (34) is sleeved on the locking rod (33). The two ends of the telescopic spring (34) respectively abut against the rod body of the locking rod (33) and the frame (30). An iron rod is arranged at one end of the locking rod (33) extending from the frame (30). An electromagnetic coil (35) is arranged on the frame (30). The electromagnetic coil (35) is energized and links the locking rod (33) to slide along the frame (30).

7. A Marshall compactor according to claim 1, characterized in that: The lower end of the vertical hammer rod (20) is threadedly connected to the striking hammer (10).

8. A Marshall compactor according to claim 2, characterized in that: A vertical sliding hole (36) is provided on the frame (30), and one end of the pointer (23) extends out of the vertical sliding hole (36).

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